xemacs-beta: src/gc.c annotate

annotate src/gc.c @ 5334:b249c479f9e1

Replace some C++ comments with C89-style /* */ comments, mc-alloc.c 2011-01-10 Aidan Kehoe <kehoea@parhasard.net> * mc-alloc.c (get_used_list_index): Replace some C++ comments with C-style /* comments.

author	Aidan Kehoe <kehoea@parhasard.net>
date	Mon, 10 Jan 2011 20:00:57 +0000
parents	2cc24c69446c
children	308d34e9f07d

rev	line source
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1 /* New incremental garbage collector for XEmacs.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2 Copyright (C) 2005 Marcus Crestani.
4934 714f7c9fabb1 make it easier to debug staticpro crashes. Ben Wing <ben@xemacs.org> parents: 4502 diff changeset	3 Copyright (C) 2010 Ben Wing.
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	4
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	5 This file is part of XEmacs.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	6
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	7 XEmacs is free software; you can redistribute it and/or modify it
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	8 under the terms of the GNU General Public License as published by the
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	9 Free Software Foundation; either version 2, or (at your option) any
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	10 later version.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	11
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	15 for more details.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	16
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	17 You should have received a copy of the GNU General Public License
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	18 along with XEmacs; see the file COPYING. If not, write to
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	20 Boston, MA 02111-1307, USA. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	21
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	22 /* Synched up with: Not in FSF. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	23
5238 2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	24 /*
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	25 Garbage Collectors in XEmacs
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	26
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	27 Currently, XEmacs comes with two garbage collectors:
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	28
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	29 - The "old garbage collector": a simple mark and sweep collector,
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	30 its implementation is mainly spread out over gc.c and alloc.c.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	31 It is used by the default configuration or if you configure
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	32 `--with-newgc=no'.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	33
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	34 - The "new garbage collector": an incremental mark and sweep collector,
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	35 its implementation is in gc.c. It is used if you configure
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	36 `--with-newgc'. It comes with a new allocator, see mc-alloc.c, and
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	37 with the KKCC mark algorith, see below.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	38
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	39 Additionally, the old garbage collectors comes with two mark algorithms:
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	40
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	41 - The "recursive mark algorithm" marks live objects by recursively
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	42 calling mark_* functions on live objects. It is the default mark
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	43 algorithm of the old garbage collector.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	44
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	45 - The "KKCC mark algorithm" uses an explicit stack that to keep
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	46 track of the current progress of traversal and uses memory layout
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	47 descriptions (that are also used by the portable dumper) instead
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	48 of the mark_* functions. The old garbage collector uses it if
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	49 you configure `--with-kkcc'. It is the default and only mark
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	50 algorithm of the new garbage collector.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	51
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	52
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	53 The New Incremental Garbage Collector
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	54
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	55 An incremental garbage collector keeps garbage collection pause
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	56 times short by interleaving small amounts of collection work with
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	57 program execution, it does that by instrumenting write barrier
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	58 algorithms that essentially allow interrupting the mark phase.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	59
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	60
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	61 Write Barrier
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	62
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	63 A write barrier is the most important prerequisite for fancy
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	64 garbage collection techniques. We implement a "Virtual Dirty Bit
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	65 (short: vdb) Write Barrier" that makes uses of the operating
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	66 system's memory-protection mechanisms: The write barrier
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	67 write-protects memory pages containing heap objects. If the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	68 mutator tries to modify these objects by writing into the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	69 write-protected page, the operating system generates a fault. The
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	70 write barrier catches this fault, reads out the error-causing
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	71 address and can thus identify the updated object and page.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	72
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	73 Not all environments and operating systems provide the mechanism to
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	74 write-protect memory, catch resulting write faults, and read out
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	75 the faulting address. But luckily, most of today's operating
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	76 systems provide the features needed for the write-barrier
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	77 implementation. Currently, XEmacs includes write-barrier
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	78 implementations for the following platforms:
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	79
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	80 - POSIX-compliant platforms like up-to-date UNIX, Linux, Solaris,
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	81 etc. use the system call `mprotect' for memory protection,
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	82 `sigaction' for signal handling and get the faulting address from
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	83 `struct siginfo'. See file vdb-posix.c.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	84
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	85 - Mach-based systems like Mac OS X use "Mach Exception Handlers".
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	86 See file vdb-mach.c.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	87
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	88 - Windows systems like native Windows and Cygwin use Microsoft's
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	89 so-called "Structured Exception Handling". See file vdb-win32.c.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	90
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	91 The configure script determines which write barrier implementation
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	92 to use for a system. If no write barrier implementation is working
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	93 on that system, a fall-back "fake" implementation is used: This
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	94 implementation simply turns of the incremental write barrier at
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	95 runtime and does not allow any incremental collection (see
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	96 vdb-fake.c). The garbage collector then acts like a traditional
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	97 mark-and-sweep garbage collector. Generally, the incremental
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	98 garbage collector can be turned of at runtime by the user or by
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	99 applications, see below.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	100
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	101
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	102 Memory Protection and Object Layout
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	103
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	104 Implementations of a memory-protection mechanism may restrict the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	105 size and the alignment of the memory region to be on page-size
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	106 boundaries. All objects subject to be covered by the write barrier
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	107 have to be allocated on logical memory pages, so that they meet the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	108 requirement to be write-protected. The new allocator mc-alloc is
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	109 aware of a system page size---it allocates all Lisp objects on
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	110 logical memory pages and is therefore defaulted to on when the new
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	111 garbage collector is enabled.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	112
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	113 Unfortunately, the Lisp object layout that works with the old
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	114 collector leads to holes in the write barrier: Not all data
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	115 structures containing pointers to Lisp objects are allocated on the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	116 Lisp heap. Some Lisp objects do not carry all their information in
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	117 the object itself. External parts are kept in separately allocated
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	118 memory blocks that are not managed by the new Lisp allocator.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	119 Examples for these objects are hash tables and dynamic arrays, two
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	120 objects that can dynamically grow and shrink. The separate memory
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	121 blocks are not guaranteed to reside on page boundaries, and thus
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	122 cannot be watched by the write barrier.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	123
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	124 Moreover, the separate parts can contain live pointers to other Lisp
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	125 objects. These pointers are not covered by the write barrier and
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	126 modifications by the client during garbage collection do escape. In
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	127 this case, the client changes the connectivity of the reachability
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	128 graph behind the collector's back, which eventually leads to
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	129 erroneous collection of live objects. To solve this problem, I
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	130 transformed the separately allocated parts to fully qualified Lisp
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	131 objects that are managed by the allocator and thus are covered by
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	132 the write barrier. This also removes a lot of special allocation
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	133 and removal code for the out-sourced parts. Generally, allocating
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	134 all data structures that contain pointers to Lisp objects on one
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	135 heap makes the whole memory layout more consistent.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	136
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	137
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	138 Debugging
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	139
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	140 The virtual-dirty-bit write barrier provokes signals on purpose,
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	141 namely SIGSEGV and SIGBUS. When debugging XEmacs with this write
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	142 barrier running, the debugger always breaks whenever a signal
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	143 occurs. This behavior is generally desired: A debugger has to break
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	144 on signals, to allow the user to examine the cause of the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	145 signal---especially for illegal memory access, which is a common
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	146 programming error. But the debugger should not break for signals
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	147 caused by the write barrier. Therefore, most debuggers provide the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	148 ability to turn of their fault handling for specific signals. The
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	149 configure script generates the debugger's settings .gdbinit and
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	150 .dbxrc, adding code to turn of signal handling for SIGSEGV and
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	151 SIGBUS, if the new garbage collector is used.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	152
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	153 But what happens if a bug in XEmacs causes an illegal memory access?
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	154 To maintain basic debugging abilities, we use another signal: First,
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	155 the write-barrier signal handler has to determine if the current
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	156 error situation is caused by the write-barrier memory protection or
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	157 not. Therefore, the signal handler checks if the faulting address
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	158 has been write-protected before. If it has not, the fault is caused
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	159 by a bug; the debugger has to break in this situation. To achieve
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	160 this, the signal handler raises SIGABRT to abort the program. Since
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	161 SIGABRT is not masked out by the debugger, XEmacs aborts and allows
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	162 the user to examine the problem.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	163
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	164
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	165 Incremental Garbage Collection
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	166
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	167 The new garbage collector is still a mark-and-sweep collector, but
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	168 now the mark phase no longer runs in one atomic action, it is
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	169 interleaved with program execution. The incremental garbage
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	170 collector needs an explicit mark stack to store the state of the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	171 incremental traversal: the KKCC mark algorithm is a prerequisite and
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	172 is enabled by default when the new garbage collector is on.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	173
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	174 Garbage collection is invoked as before: After `gc-cons-threshold'
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	175 bytes have been allocated since the last garbage collection (or
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	176 after `gc-cons-percentage' percentage of the total amount of memory
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	177 used for Lisp data has been allocated since the last garbage
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	178 collection) a collection starts. After some initialization, the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	179 marking begins.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	180
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	181 The variable `gc-incremental-traversal-threshold' contains how many
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	182 steps of incremental work have to be executed in one incremental
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	183 traversal cycle. After that many steps have been made, the mark
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	184 phase is interrupted and the client resumes. Now, the Lisp memory
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	185 is write-protected and the write barrier records modified objects.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	186 Incremental traversal is resumed after
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	187 `gc-cons-incremental-threshold' bytes have been allocated since the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	188 interruption of garbage collection. Then, the objects recorded by
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	189 the write-barrier have to be re-examined by the traversal, i.e. they
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	190 are re-pushed onto the mark stack and processed again. Once the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	191 mark stack is empty, the traversal is done.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	192
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	193 A full incremental collection is slightly slower than a full garbage
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	194 collection before: There is an overhead for storing pointers into
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	195 objects when the write barrier is running, and an overhead for
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	196 repeated traversal of modified objects. However, the new
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	197 incremental garbage collector reduces client pause times to
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	198 one-third, so even when a garbage collection is running, XEmacs
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	199 stays reactive.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	200
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	201
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	202 Tricolor Marking: White, Black, and Grey Mark Bits
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	203
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	204 Garbage collection traverses the graph of reachable objects and
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	205 colors them. The objects subject to garbage collection are white at
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	206 the beginning. By the end of the collection, those that will be
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	207 retained are colored black. When there are no reachable objects left
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	208 to blacken, the traversal of live data structures is finished. In
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	209 traditional mark-and-sweep collectors, this black and white coloring
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	210 is sufficient.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	211
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	212 In an incremental collector, the intermediate state of the traversal
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	213 is im- portant because of ongoing mutator activity: the mutator
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	214 cannot be allowed to change things in such way that the collector
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	215 will fail to find all reachable objects. To understand and prevent
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	216 such interactions between the mutator and the collector, it is
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	217 useful to introduce a third color, grey.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	218
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	219 Grey objects have been reached by the traversal, but its descendants
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	220 may not have been. White objects are changed to grey when they are
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	221 reached by the traversal. Grey objects mark the current state of the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	222 traversal: traversal pro- ceeds by processing the grey objects. The
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	223 KKCC mark stack holds all the currently grey-colored objects.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	224 Processing a grey object means following its outgoing pointers, and
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	225 coloring it black afterwards.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	226
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	227 Intuitively, the traversal proceeds in a wavefront of grey objects
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	228 that separates the unreached objects, which are colored white, from
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	229 the already processed black objects.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	230
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	231 The allocator takes care of storing the mark bits: The mark bits are
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	232 kept in a tree like structure, for details see mc-alloc.c.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	233
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	234
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	235 Internal States of the Incremental Garbage Collector
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	236
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	237 To keep track of its current state, the collector holds it's current
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	238 phase in the global `gc_state' variable. A collector phase is one
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	239 of the following:
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	240
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	241 NONE No incremental or full collection is currently running.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	242
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	243 INIT_GC The collector prepares for a new collection, e.g. sets some
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	244 global variables.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	245
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	246 PUSH_ROOT_SET The collector pushes the root set on the mark stack
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	247 to start the traversal of live objects.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	248
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	249 MARK The traversal of live objects colors the reachable objects
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	250 white, grey, or black, according to their lifeness. The mark
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	251 phase can be interrupted by the incremental collection algorithm:
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	252 Before the client (i.e. the non collector part of XEmacs) resumes,
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	253 the write barrier has to be installed so that the collector knows
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	254 what objects get modified during the collector's pause.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	255 Installing a write barrier means protecting pages that only
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	256 contain black objects and recording write access to these objects.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	257 Pages with white or grey objects do not need to be protected,
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	258 since these pages are due to marking anyways when the collector
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	259 resumes. Once the collector resumes, it has to re-scan all
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	260 objects that have been modified during the collector pause and
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	261 have been caught by the write barrier. The mark phase is done when
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	262 there are no more grey objects on the heap, i.e. the KKCC mark stack
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	263 is empty.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	264
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	265 REPUSH_ROOT_SET After the mark phase is done, the collector has to
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	266 traverse the root set pointers again, since modifications to the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	267 objects in the root set can not all be covered by the write barrier
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	268 (e.g. root set objects that are on the call stack). Therefore, the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	269 collector has to traverse the root set again without interruption.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	270
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	271 FINISH_MARK After the mark phase is finished, some objects with
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	272 special liveness semantics have to be treated separately, e.g.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	273 ephemerons and the various flavors of weak objects.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	274
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	275 FINALIZE The collector registers all objects that have finalizers
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	276 for finalization. Finalizations happens asynchronously sometimes
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	277 after the collection has finished.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	278
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	279 SWEEP The allocator scans the entire heap and frees all white marked
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	280 objects. The freed memory is recycled and can be re-used for future
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	281 allocations. The sweep phase is carried out atomically.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	282
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	283 FINISH_GC The collector cleans up after the garbage collection by
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	284 resetting some global variables.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	285
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	286
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	287 Lisp Interface
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	288
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	289 The new garbage collector can be accessed directly from Emacs Lisp.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	290 Basically, two functions invoke the garbage collector:
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	291
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	292 (gc-full) starts a full garbage collection. If an incremental
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	293 garbage collection is already running, it is finished without
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	294 further interruption. This function guarantees that unused
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	295 objects have been freed when it returns.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	296
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	297 (gc-incremental) starts an incremental garbage collection. If an
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	298 incremental garbage collection is already running, the next cycle
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	299 of incremental traversal is started. The garbage collection is
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	300 finished if the traversal completes. Note that this function does
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	301 not necessarily free any memory. It only guarantees that the
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	302 traversal of the heap makes progress.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	303
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	304 The old garbage collector uses the function (garbage-collect) to
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	305 invoke a garbage collection. This function is still in use by some
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	306 applications that explicitly want to invoke a garbage collection.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	307 Since these applications may expect that unused memory has really
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	308 been freed when (garbage-collect) returns, it maps to (gc-full).
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	309
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	310 The new garbage collector is highly customizable during runtime; it
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	311 can even be switched back to the traditional mark-and-sweep garbage
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	312 collector: The variable allow-incremental-gc controls whether
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	313 garbage collections may be interrupted or if they have to be carried
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	314 out in one atomic action. Setting allow-incremental-gc to nil
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	315 prevents incremental garbage collection, and the garbage collector
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	316 then only does full collects, even if (gc-incremental) is called.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	317 Non-nil allows incremental garbage collection.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	318
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	319 This way applications can freely decide what garbage collection
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	320 algorithm is best for the upcoming memory usage. How frequently a
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	321 garbage collection occurs and how much traversal work is done in one
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	322 incremental cycle can also be modified during runtime. See
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	323
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	324 M-x customize RET alloc RET
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	325
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	326 for an overview of all settings.
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	327
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	328
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	329 More Information
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	330
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	331 More details can be found in
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	332 http://crestani.de/xemacs/pdf/thesis-newgc.pdf .
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	333
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	334 */
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	335
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	336 #include <config.h>
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	337 #include "lisp.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	338
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	339 #include "backtrace.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	340 #include "buffer.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	341 #include "bytecode.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	342 #include "chartab.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	343 #include "console-stream.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	344 #include "device.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	345 #include "elhash.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	346 #include "events.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	347 #include "extents-impl.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	348 #include "file-coding.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	349 #include "frame-impl.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	350 #include "gc.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	351 #include "glyphs.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	352 #include "opaque.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	353 #include "lrecord.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	354 #include "lstream.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	355 #include "process.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	356 #include "profile.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	357 #include "redisplay.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	358 #include "specifier.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	359 #include "sysfile.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	360 #include "sysdep.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	361 #include "window.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	362 #include "vdb.h"
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	363
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	364
5238 2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	365 /* Number of bytes of consing since gc before a full gc should happen. */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	366 #define GC_CONS_THRESHOLD 2000000
5238 2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	367
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	368 /* Number of bytes of consing since gc before another cycle of the gc
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	369 should happen in incremental mode. */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	370 #define GC_CONS_INCREMENTAL_THRESHOLD 200000
5238 2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	371
2cc24c69446c Document the new allocator and the new garbage collector in gc.c and mc-alloc.c. Marcus Crestani <crestani@informatik.uni-tuebingen.de> parents: 5191 diff changeset	372 /* Number of elements marked in one cycle of incremental GC. */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	373 #define GC_INCREMENTAL_TRAVERSAL_THRESHOLD 100000
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	374
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	375 /* Number of bytes of consing done since the last GC. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	376 EMACS_INT consing_since_gc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	377
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	378 /* Number of bytes of consing done since startup. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	379 EMACS_UINT total_consing;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	380
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	381 /* Number of bytes of current allocated heap objects. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	382 EMACS_INT total_gc_usage;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	383
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	384 /* If the above is set. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	385 int total_gc_usage_set;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	386
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	387 /* Number of bytes of consing since gc before another gc should be done. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	388 EMACS_INT gc_cons_threshold;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	389
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	390 /* Nonzero during gc */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	391 int gc_in_progress;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	392
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	393 /* Percentage of consing of total data size before another GC. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	394 EMACS_INT gc_cons_percentage;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	395
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	396 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	397 /* Number of bytes of consing since gc before another cycle of the gc
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	398 should be done in incremental mode. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	399 EMACS_INT gc_cons_incremental_threshold;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	400
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	401 /* Number of elements marked in one cycle of incremental GC. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	402 EMACS_INT gc_incremental_traversal_threshold;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	403
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	404 /* Nonzero during write barrier */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	405 int write_barrier_enabled;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	406 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	407
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	408
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	409
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	410 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	411 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	412 /* Incremental State and Statistics */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	413 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	414
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	415 enum gc_phase
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	416 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	417 NONE,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	418 INIT_GC,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	419 PUSH_ROOT_SET,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	420 MARK,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	421 REPUSH_ROOT_SET,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	422 FINISH_MARK,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	423 FINALIZE,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	424 SWEEP,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	425 FINISH_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	426 };
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	427
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	428 #ifndef ERROR_CHECK_GC
4124 9a633a00c3f2 [xemacs-hg @ 2007-08-17 08:08:05 by crestani] crestani parents: 4115 diff changeset	429 typedef struct gc_state_type
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	430 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	431 enum gc_phase phase;
4124 9a633a00c3f2 [xemacs-hg @ 2007-08-17 08:08:05 by crestani] crestani parents: 4115 diff changeset	432 } gc_state_type;
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	433 #else /* ERROR_CHECK_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	434 enum gc_stat_id
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	435 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	436 GC_STAT_TOTAL,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	437 GC_STAT_IN_LAST_GC,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	438 GC_STAT_IN_THIS_GC,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	439 GC_STAT_IN_LAST_CYCLE,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	440 GC_STAT_IN_THIS_CYCLE,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	441 GC_STAT_COUNT /* has to be last */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	442 };
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	443
4124 9a633a00c3f2 [xemacs-hg @ 2007-08-17 08:08:05 by crestani] crestani parents: 4115 diff changeset	444 typedef struct gc_state_type
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	445 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	446 enum gc_phase phase;
3313 509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	447 double n_gc[GC_STAT_COUNT];
509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	448 double n_cycles[GC_STAT_COUNT];
509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	449 double enqueued[GC_STAT_COUNT];
509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	450 double dequeued[GC_STAT_COUNT];
509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	451 double repushed[GC_STAT_COUNT];
509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	452 double enqueued2[GC_STAT_COUNT];
509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	453 double dequeued2[GC_STAT_COUNT];
509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	454 double finalized[GC_STAT_COUNT];
509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	455 double freed[GC_STAT_COUNT];
4124 9a633a00c3f2 [xemacs-hg @ 2007-08-17 08:08:05 by crestani] crestani parents: 4115 diff changeset	456 } gc_state_type;
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	457 #endif /* ERROR_CHECK_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	458
4124 9a633a00c3f2 [xemacs-hg @ 2007-08-17 08:08:05 by crestani] crestani parents: 4115 diff changeset	459 gc_state_type gc_state;
9a633a00c3f2 [xemacs-hg @ 2007-08-17 08:08:05 by crestani] crestani parents: 4115 diff changeset	460
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	461 #define GC_PHASE gc_state.phase
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	462 #define GC_SET_PHASE(p) GC_PHASE = p
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	463
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	464 #ifdef ERROR_CHECK_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	465 # define GC_STAT_START_NEW_GC gc_stat_start_new_gc ()
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	466 # define GC_STAT_RESUME_GC gc_stat_resume_gc ()
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	467
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	468 #define GC_STAT_TICK(STAT) \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	469 gc_state.STAT[GC_STAT_TOTAL]++; \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	470 gc_state.STAT[GC_STAT_IN_THIS_GC]++; \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	471 gc_state.STAT[GC_STAT_IN_THIS_CYCLE]++
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	472
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	473 # define GC_STAT_ENQUEUED \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	474 if (GC_PHASE == REPUSH_ROOT_SET) \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	475 { \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	476 GC_STAT_TICK (enqueued2); \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	477 } \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	478 else \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	479 { \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	480 GC_STAT_TICK (enqueued); \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	481 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	482
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	483 # define GC_STAT_DEQUEUED \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	484 if (gc_state.phase == REPUSH_ROOT_SET) \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	485 { \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	486 GC_STAT_TICK (dequeued2); \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	487 } \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	488 else \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	489 { \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	490 GC_STAT_TICK (dequeued); \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	491 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	492 # define GC_STAT_REPUSHED GC_STAT_TICK (repushed)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	493
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	494 #define GC_STAT_RESUME(stat) \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	495 gc_state.stat[GC_STAT_IN_LAST_CYCLE] = \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	496 gc_state.stat[GC_STAT_IN_THIS_CYCLE]; \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	497 gc_state.stat[GC_STAT_IN_THIS_CYCLE] = 0
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	498
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	499 #define GC_STAT_RESTART(stat) \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	500 gc_state.stat[GC_STAT_IN_LAST_GC] = \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	501 gc_state.stat[GC_STAT_IN_THIS_GC]; \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	502 gc_state.stat[GC_STAT_IN_THIS_GC] = 0; \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	503 GC_STAT_RESUME (stat)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	504
5046 d4f666cda5e6 some random fixups Ben Wing <ben@xemacs.org> parents: 5016 diff changeset	505 static void
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	506 gc_stat_start_new_gc (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	507 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	508 gc_state.n_gc[GC_STAT_TOTAL]++;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	509 gc_state.n_cycles[GC_STAT_TOTAL]++;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	510 gc_state.n_cycles[GC_STAT_IN_LAST_GC] = gc_state.n_cycles[GC_STAT_IN_THIS_GC];
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	511 gc_state.n_cycles[GC_STAT_IN_THIS_GC] = 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	512
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	513 GC_STAT_RESTART (enqueued);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	514 GC_STAT_RESTART (dequeued);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	515 GC_STAT_RESTART (repushed);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	516 GC_STAT_RESTART (finalized);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	517 GC_STAT_RESTART (enqueued2);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	518 GC_STAT_RESTART (dequeued2);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	519 GC_STAT_RESTART (freed);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	520 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	521
5046 d4f666cda5e6 some random fixups Ben Wing <ben@xemacs.org> parents: 5016 diff changeset	522 static void
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	523 gc_stat_resume_gc (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	524 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	525 gc_state.n_cycles[GC_STAT_TOTAL]++;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	526 gc_state.n_cycles[GC_STAT_IN_THIS_GC]++;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	527 GC_STAT_RESUME (enqueued);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	528 GC_STAT_RESUME (dequeued);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	529 GC_STAT_RESUME (repushed);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	530 GC_STAT_RESUME (finalized);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	531 GC_STAT_RESUME (enqueued2);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	532 GC_STAT_RESUME (dequeued2);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	533 GC_STAT_RESUME (freed);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	534 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	535
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	536 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	537 gc_stat_finalized (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	538 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	539 GC_STAT_TICK (finalized);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	540 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	541
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	542 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	543 gc_stat_freed (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	544 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	545 GC_STAT_TICK (freed);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	546 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	547
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	548 DEFUN("gc-stats", Fgc_stats, 0, 0 ,"", /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	549 Return statistics about garbage collection cycles in a property list.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	550 */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	551 ())
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	552 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	553 Lisp_Object pl = Qnil;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	554 #define PL(name,value) \
3313 509d2981ffea [xemacs-hg @ 2006-03-28 17:43:43 by crestani] crestani parents: 3267 diff changeset	555 pl = cons3 (intern (name), make_float (gc_state.value), pl)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	556
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	557 PL ("freed-in-this-cycle", freed[GC_STAT_IN_THIS_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	558 PL ("freed-in-this-gc", freed[GC_STAT_IN_THIS_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	559 PL ("freed-in-last-cycle", freed[GC_STAT_IN_LAST_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	560 PL ("freed-in-last-gc", freed[GC_STAT_IN_LAST_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	561 PL ("freed-total", freed[GC_STAT_TOTAL]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	562 PL ("finalized-in-this-cycle", finalized[GC_STAT_IN_THIS_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	563 PL ("finalized-in-this-gc", finalized[GC_STAT_IN_THIS_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	564 PL ("finalized-in-last-cycle", finalized[GC_STAT_IN_LAST_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	565 PL ("finalized-in-last-gc", finalized[GC_STAT_IN_LAST_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	566 PL ("finalized-total", finalized[GC_STAT_TOTAL]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	567 PL ("repushed-in-this-cycle", repushed[GC_STAT_IN_THIS_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	568 PL ("repushed-in-this-gc", repushed[GC_STAT_IN_THIS_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	569 PL ("repushed-in-last-cycle", repushed[GC_STAT_IN_LAST_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	570 PL ("repushed-in-last-gc", repushed[GC_STAT_IN_LAST_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	571 PL ("repushed-total", repushed[GC_STAT_TOTAL]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	572 PL ("dequeued2-in-this-cycle", dequeued2[GC_STAT_IN_THIS_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	573 PL ("dequeued2-in-this-gc", dequeued2[GC_STAT_IN_THIS_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	574 PL ("dequeued2-in-last-cycle", dequeued2[GC_STAT_IN_LAST_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	575 PL ("dequeued2-in-last-gc", dequeued2[GC_STAT_IN_LAST_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	576 PL ("dequeued2-total", dequeued2[GC_STAT_TOTAL]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	577 PL ("enqueued2-in-this-cycle", enqueued2[GC_STAT_IN_THIS_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	578 PL ("enqueued2-in-this-gc", enqueued2[GC_STAT_IN_THIS_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	579 PL ("enqueued2-in-last-cycle", enqueued2[GC_STAT_IN_LAST_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	580 PL ("enqueued2-in-last-gc", enqueued2[GC_STAT_IN_LAST_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	581 PL ("enqueued2-total", enqueued2[GC_STAT_TOTAL]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	582 PL ("dequeued-in-this-cycle", dequeued[GC_STAT_IN_THIS_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	583 PL ("dequeued-in-this-gc", dequeued[GC_STAT_IN_THIS_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	584 PL ("dequeued-in-last-cycle", dequeued[GC_STAT_IN_LAST_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	585 PL ("dequeued-in-last-gc", dequeued[GC_STAT_IN_LAST_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	586 PL ("dequeued-total", dequeued[GC_STAT_TOTAL]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	587 PL ("enqueued-in-this-cycle", enqueued[GC_STAT_IN_THIS_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	588 PL ("enqueued-in-this-gc", enqueued[GC_STAT_IN_THIS_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	589 PL ("enqueued-in-last-cycle", enqueued[GC_STAT_IN_LAST_CYCLE]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	590 PL ("enqueued-in-last-gc", enqueued[GC_STAT_IN_LAST_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	591 PL ("enqueued-total", enqueued[GC_STAT_TOTAL]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	592 PL ("n-cycles-in-this-gc", n_cycles[GC_STAT_IN_THIS_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	593 PL ("n-cycles-in-last-gc", n_cycles[GC_STAT_IN_LAST_GC]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	594 PL ("n-cycles-total", n_cycles[GC_STAT_TOTAL]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	595 PL ("n-gc-total", n_gc[GC_STAT_TOTAL]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	596 PL ("phase", phase);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	597 return pl;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	598 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	599 #else /* not ERROR_CHECK_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	600 # define GC_STAT_START_NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	601 # define GC_STAT_RESUME_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	602 # define GC_STAT_ENQUEUED
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	603 # define GC_STAT_DEQUEUED
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	604 # define GC_STAT_REPUSHED
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	605 # define GC_STAT_REMOVED
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	606 #endif /* not ERROR_CHECK_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	607 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	608
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	609
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	610 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	611 /* Recompute need to garbage collect */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	612 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	613
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	614 int need_to_garbage_collect;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	615
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	616 #ifdef ERROR_CHECK_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	617 int always_gc = 0; /* Debugging hack; equivalent to
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	618 (setq gc-cons-thresold -1) */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	619 #else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	620 #define always_gc 0
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	621 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	622
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	623 /* True if it's time to garbage collect now. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	624 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	625 recompute_need_to_garbage_collect (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	626 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	627 if (always_gc)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	628 need_to_garbage_collect = 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	629 else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	630 need_to_garbage_collect =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	631 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	632 write_barrier_enabled ?
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	633 (consing_since_gc > gc_cons_incremental_threshold) :
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	634 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	635 (consing_since_gc > gc_cons_threshold
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	636 &&
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	637 #if 0 /* #### implement this better */
4115 6595286b4bed [xemacs-hg @ 2007-08-14 18:58:13 by crestani] crestani parents: 3519 diff changeset	638 ((double)consing_since_gc) / total_data_usage()) >=
6595286b4bed [xemacs-hg @ 2007-08-14 18:58:13 by crestani] crestani parents: 3519 diff changeset	639 ((double)gc_cons_percentage / 100)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	640 #else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	641 (!total_gc_usage_set \|\|
4115 6595286b4bed [xemacs-hg @ 2007-08-14 18:58:13 by crestani] crestani parents: 3519 diff changeset	642 ((double)consing_since_gc / total_gc_usage) >=
6595286b4bed [xemacs-hg @ 2007-08-14 18:58:13 by crestani] crestani parents: 3519 diff changeset	643 ((double)gc_cons_percentage / 100))
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	644 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	645 );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	646 recompute_funcall_allocation_flag ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	647 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	648
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	649
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	650
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	651 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	652 /* Mark Phase */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	653 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	654
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	655 static const struct memory_description lisp_object_description_1[] = {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	656 { XD_LISP_OBJECT, 0 },
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	657 { XD_END }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	658 };
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	659
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	660 const struct sized_memory_description lisp_object_description = {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	661 sizeof (Lisp_Object),
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	662 lisp_object_description_1
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	663 };
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	664
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	665 #if defined (USE_KKCC) \|\| defined (PDUMP)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	666
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	667 /* This function extracts the value of a count variable described somewhere
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	668 else in the description. It is converted corresponding to the type */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	669 EMACS_INT
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	670 lispdesc_indirect_count_1 (EMACS_INT code,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	671 const struct memory_description *idesc,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	672 const void *idata)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	673 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	674 EMACS_INT count;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	675 const void *irdata;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	676
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	677 int line = XD_INDIRECT_VAL (code);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	678 int delta = XD_INDIRECT_DELTA (code);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	679
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	680 irdata = ((char *) idata) +
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	681 lispdesc_indirect_count (idesc[line].offset, idesc, idata);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	682 switch (idesc[line].type)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	683 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	684 case XD_BYTECOUNT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	685 count = * (Bytecount *) irdata;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	686 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	687 case XD_ELEMCOUNT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	688 count = * (Elemcount *) irdata;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	689 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	690 case XD_HASHCODE:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	691 count = * (Hashcode *) irdata;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	692 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	693 case XD_INT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	694 count = * (int *) irdata;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	695 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	696 case XD_LONG:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	697 count = * (long *) irdata;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	698 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	699 default:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	700 stderr_out ("Unsupported count type : %d (line = %d, code = %ld)\n",
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	701 idesc[line].type, line, (long) code);
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	702 #if defined (USE_KKCC) && defined (DEBUG_XEMACS)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	703 if (gc_in_progress)
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	704 kkcc_detailed_backtrace ();
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	705 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	706 #ifdef PDUMP
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	707 if (in_pdump)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	708 pdump_backtrace ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	709 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	710 count = 0; /* warning suppression */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	711 ABORT ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	712 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	713 count += delta;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	714 return count;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	715 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	716
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	717 /* SDESC is a "description map" (basically, a list of offsets used for
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	718 successive indirections) and OBJ is the first object to indirect off of.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	719 Return the description ultimately found. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	720
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	721 const struct sized_memory_description *
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	722 lispdesc_indirect_description_1 (const void *obj,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	723 const struct sized_memory_description *sdesc)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	724 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	725 int pos;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	726
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	727 for (pos = 0; sdesc[pos].size >= 0; pos++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	728 obj = * (const void *) ((const char ) obj + sdesc[pos].size);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	729
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	730 return (const struct sized_memory_description *) obj;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	731 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	732
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	733 /* Compute the size of the data at RDATA, described by a single entry
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	734 DESC1 in a description array. OBJ and DESC are used for
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	735 XD_INDIRECT references. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	736
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	737 static Bytecount
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	738 lispdesc_one_description_line_size (void *rdata,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	739 const struct memory_description *desc1,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	740 const void *obj,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	741 const struct memory_description *desc)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	742 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	743 union_switcheroo:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	744 switch (desc1->type)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	745 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	746 case XD_LISP_OBJECT_ARRAY:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	747 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	748 EMACS_INT val = lispdesc_indirect_count (desc1->data1, desc, obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	749 return (val * sizeof (Lisp_Object));
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	750 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	751 case XD_LISP_OBJECT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	752 case XD_LO_LINK:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	753 return sizeof (Lisp_Object);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	754 case XD_OPAQUE_PTR:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	755 return sizeof (void *);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	756 #ifdef NEW_GC
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	757 case XD_INLINE_LISP_OBJECT_BLOCK_PTR:
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	758 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	759 case XD_BLOCK_PTR:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	760 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	761 EMACS_INT val = lispdesc_indirect_count (desc1->data1, desc, obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	762 return val * sizeof (void *);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	763 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	764 case XD_BLOCK_ARRAY:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	765 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	766 EMACS_INT val = lispdesc_indirect_count (desc1->data1, desc, obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	767
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	768 return (val *
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	769 lispdesc_block_size
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	770 (rdata,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	771 lispdesc_indirect_description (obj, desc1->data2.descr)));
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	772 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	773 case XD_OPAQUE_DATA_PTR:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	774 return sizeof (void *);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	775 case XD_UNION_DYNAMIC_SIZE:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	776 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	777 /* If an explicit size was given in the first-level structure
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	778 description, use it; else compute size based on current union
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	779 constant. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	780 const struct sized_memory_description *sdesc =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	781 lispdesc_indirect_description (obj, desc1->data2.descr);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	782 if (sdesc->size)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	783 return sdesc->size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	784 else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	785 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	786 desc1 = lispdesc_process_xd_union (desc1, desc, obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	787 if (desc1)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	788 goto union_switcheroo;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	789 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	790 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	791 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	792 case XD_UNION:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	793 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	794 /* If an explicit size was given in the first-level structure
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	795 description, use it; else compute size based on maximum of all
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	796 possible structures. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	797 const struct sized_memory_description *sdesc =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	798 lispdesc_indirect_description (obj, desc1->data2.descr);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	799 if (sdesc->size)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	800 return sdesc->size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	801 else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	802 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	803 int count;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	804 Bytecount max_size = -1, size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	805
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	806 desc1 = sdesc->description;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	807
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	808 for (count = 0; desc1[count].type != XD_END; count++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	809 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	810 size = lispdesc_one_description_line_size (rdata,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	811 &desc1[count],
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	812 obj, desc);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	813 if (size > max_size)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	814 max_size = size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	815 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	816 return max_size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	817 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	818 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	819 case XD_ASCII_STRING:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	820 return sizeof (void *);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	821 case XD_DOC_STRING:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	822 return sizeof (void *);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	823 case XD_INT_RESET:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	824 return sizeof (int);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	825 case XD_BYTECOUNT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	826 return sizeof (Bytecount);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	827 case XD_ELEMCOUNT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	828 return sizeof (Elemcount);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	829 case XD_HASHCODE:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	830 return sizeof (Hashcode);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	831 case XD_INT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	832 return sizeof (int);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	833 case XD_LONG:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	834 return sizeof (long);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	835 default:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	836 stderr_out ("Unsupported dump type : %d\n", desc1->type);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	837 ABORT ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	838 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	839
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	840 return 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	841 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	842
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	843
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	844 /* Return the size of the memory block (NOT necessarily a structure!)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	845 described by SDESC and pointed to by OBJ. If SDESC records an
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	846 explicit size (i.e. non-zero), it is simply returned; otherwise,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	847 the size is calculated by the maximum offset and the size of the
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	848 object at that offset, rounded up to the maximum alignment. In
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	849 this case, we may need the object, for example when retrieving an
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	850 "indirect count" of an inlined array (the count is not constant,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	851 but is specified by one of the elements of the memory block). (It
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	852 is generally not a problem if we return an overly large size -- we
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	853 will simply end up reserving more space than necessary; but if the
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	854 size is too small we could be in serious trouble, in particular
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	855 with nested inlined structures, where there may be alignment
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	856 padding in the middle of a block. #### In fact there is an (at
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	857 least theoretical) problem with an overly large size -- we may
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	858 trigger a protection fault when reading from invalid memory. We
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	859 need to handle this -- perhaps in a stupid but dependable way,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	860 i.e. by trapping SIGSEGV and SIGBUS.) */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	861
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	862 Bytecount
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	863 lispdesc_block_size_1 (const void *obj, Bytecount size,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	864 const struct memory_description *desc)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	865 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	866 EMACS_INT max_offset = -1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	867 int max_offset_pos = -1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	868 int pos;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	869
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	870 if (size)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	871 return size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	872
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	873 for (pos = 0; desc[pos].type != XD_END; pos++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	874 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	875 EMACS_INT offset = lispdesc_indirect_count (desc[pos].offset, desc, obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	876 if (offset == max_offset)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	877 {
5168 cf900a2f1fa3 extract gap array from extents.c, use in range tables Ben Wing <ben@xemacs.org> parents: 5158 diff changeset	878 #if 0
cf900a2f1fa3 extract gap array from extents.c, use in range tables Ben Wing <ben@xemacs.org> parents: 5158 diff changeset	879 /* This can legitimately happen with gap arrays -- if there are
cf900a2f1fa3 extract gap array from extents.c, use in range tables Ben Wing <ben@xemacs.org> parents: 5158 diff changeset	880 no elements in the array, and the gap size is 0, then both
cf900a2f1fa3 extract gap array from extents.c, use in range tables Ben Wing <ben@xemacs.org> parents: 5158 diff changeset	881 parts of the array will be of size 0 and in the same place. */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	882 stderr_out ("Two relocatable elements at same offset?\n");
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	883 ABORT ();
5168 cf900a2f1fa3 extract gap array from extents.c, use in range tables Ben Wing <ben@xemacs.org> parents: 5158 diff changeset	884 #endif
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	885 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	886 else if (offset > max_offset)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	887 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	888 max_offset = offset;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	889 max_offset_pos = pos;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	890 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	891 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	892
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	893 if (max_offset_pos < 0)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	894 return 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	895
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	896 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	897 Bytecount size_at_max;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	898 size_at_max =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	899 lispdesc_one_description_line_size ((char *) obj + max_offset,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	900 &desc[max_offset_pos], obj, desc);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	901
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	902 /* We have no way of knowing the required alignment for this structure,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	903 so just make it maximally aligned. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	904 return MAX_ALIGN_SIZE (max_offset + size_at_max);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	905 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	906 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	907 #endif /* defined (USE_KKCC) \|\| defined (PDUMP) */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	908
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	909 #ifdef NEW_GC
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	910 #define GC_CHECK_NOT_FREE(lheader) \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	911 gc_checking_assert (! LRECORD_FREE_P (lheader));
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	912 #else /* not NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	913 #define GC_CHECK_NOT_FREE(lheader) \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	914 gc_checking_assert (! LRECORD_FREE_P (lheader)); \
5142 f965e31a35f0 reduce lcrecord headers to 2 words, rename printing_unreadable_object Ben Wing <ben@xemacs.org> parents: 5127 diff changeset	915 gc_checking_assert (LHEADER_IMPLEMENTATION (lheader)->frob_block_p \|\| \
f965e31a35f0 reduce lcrecord headers to 2 words, rename printing_unreadable_object Ben Wing <ben@xemacs.org> parents: 5127 diff changeset	916 ! (lheader)->free)
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	917 #endif /* not NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	918
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	919 #ifdef USE_KKCC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	920 /* The following functions implement the new mark algorithm.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	921 They mark objects according to their descriptions. They
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	922 are modeled on the corresponding pdumper procedures. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	923
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	924 #if 0
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	925 # define KKCC_STACK_AS_QUEUE 1
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	926 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	927
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	928 #ifdef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	929 /* The backtrace for the KKCC mark functions. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	930 #define KKCC_INIT_BT_STACK_SIZE 4096
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	931
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	932 typedef struct
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	933 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	934 void *obj;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	935 const struct memory_description *desc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	936 int pos;
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	937 int is_lisp;
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	938 } kkcc_bt_stack_entry;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	939
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	940 static kkcc_bt_stack_entry *kkcc_bt;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	941 static int kkcc_bt_stack_size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	942 static int kkcc_bt_depth = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	943
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	944 static void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	945 kkcc_bt_init (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	946 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	947 kkcc_bt_depth = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	948 kkcc_bt_stack_size = KKCC_INIT_BT_STACK_SIZE;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	949 kkcc_bt = (kkcc_bt_stack_entry *)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	950 xmalloc_and_zero (kkcc_bt_stack_size * sizeof (kkcc_bt_stack_entry));
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	951 if (!kkcc_bt)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	952 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	953 stderr_out ("KKCC backtrace stack init failed for size %d\n",
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	954 kkcc_bt_stack_size);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	955 ABORT ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	956 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	957 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	958
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	959 /* Workhorse backtrace function. Not static because may potentially be
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	960 called from a debugger. */
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	961
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	962 void kkcc_backtrace_1 (int size, int detailed);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	963 void
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	964 kkcc_backtrace_1 (int size, int detailed)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	965 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	966 int i;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	967 stderr_out ("KKCC mark stack backtrace :\n");
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	968 for (i = kkcc_bt_depth - 1; i >= kkcc_bt_depth - size && i >= 0; i--)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	969 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	970 Lisp_Object obj = wrap_pointer_1 (kkcc_bt[i].obj);
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	971 stderr_out (" [%d] ", i);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	972 if (!kkcc_bt[i].is_lisp)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	973 stderr_out ("non Lisp Object");
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	974 else if (!LRECORDP (obj))
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	975 stderr_out ("Lisp Object, non-record");
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	976 else if (XRECORD_LHEADER (obj)->type >= lrecord_type_last_built_in_type
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	977 \|\| (!XRECORD_LHEADER_IMPLEMENTATION (obj)))
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	978 stderr_out ("WARNING! Bad Lisp Object type %d",
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	979 XRECORD_LHEADER (obj)->type);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	980 else
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	981 stderr_out ("%s", XRECORD_LHEADER_IMPLEMENTATION (obj)->name);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	982 if (detailed && kkcc_bt[i].is_lisp)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	983 {
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	984 stderr_out (" ");
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	985 debug_print (obj);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	986 }
3519 896a34d28b71 [xemacs-hg @ 2006-07-19 19:24:41 by crestani] crestani parents: 3486 diff changeset	987 stderr_out (" (addr: %p, desc: %p, ",
896a34d28b71 [xemacs-hg @ 2006-07-19 19:24:41 by crestani] crestani parents: 3486 diff changeset	988 (void *) kkcc_bt[i].obj,
896a34d28b71 [xemacs-hg @ 2006-07-19 19:24:41 by crestani] crestani parents: 3486 diff changeset	989 (void *) kkcc_bt[i].desc);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	990 if (kkcc_bt[i].pos >= 0)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	991 stderr_out ("pos: %d)\n", kkcc_bt[i].pos);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	992 else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	993 if (kkcc_bt[i].pos == -1)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	994 stderr_out ("root set)\n");
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	995 else if (kkcc_bt[i].pos == -2)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	996 stderr_out ("dirty object)\n");
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	997 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	998 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	999
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1000 /* Various front ends onto kkcc_backtrace_1(), meant to be called from
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1001 a debugger.
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1002
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1003 The variants are:
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1004
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1005 normal vs _full(): Normal displays up to the topmost 100 items on the
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1006 stack, whereas full displays all items (even if there are thousands)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1007
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1008 _detailed_() vs _short_(): Detailed here means print out the actual
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1009 Lisp objects on the stack using debug_print() in addition to their type,
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1010 whereas short means only show the type
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1011 */
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1012
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1013 void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1014 kkcc_detailed_backtrace (void)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1015 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1016 kkcc_backtrace_1 (100, 1);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1017 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1018
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1019 void kkcc_short_backtrace (void);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1020 void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1021 kkcc_short_backtrace (void)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1022 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1023 kkcc_backtrace_1 (100, 0);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1024 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1025
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1026 void kkcc_detailed_backtrace_full (void);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1027 void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1028 kkcc_detailed_backtrace_full (void)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1029 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1030 kkcc_backtrace_1 (kkcc_bt_depth, 1);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1031 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1032
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1033 void kkcc_short_backtrace_full (void);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1034 void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1035 kkcc_short_backtrace_full (void)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1036 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1037 kkcc_backtrace_1 (kkcc_bt_depth, 0);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1038 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1039
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1040 /* Short versions for ease in calling from a debugger */
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1041
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1042 void kbt (void);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1043 void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1044 kbt (void)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1045 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1046 kkcc_detailed_backtrace ();
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1047 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1048
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1049 void kbts (void);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1050 void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1051 kbts (void)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1052 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1053 kkcc_short_backtrace ();
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1054 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1055
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1056 void kbtf (void);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1057 void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1058 kbtf (void)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1059 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1060 kkcc_detailed_backtrace_full ();
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1061 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1062
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1063 void kbtsf (void);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1064 void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1065 kbtsf (void)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1066 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1067 kkcc_short_backtrace_full ();
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1068 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1069
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1070 static void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1071 kkcc_bt_stack_realloc (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1072 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1073 kkcc_bt_stack_size *= 2;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1074 kkcc_bt = (kkcc_bt_stack_entry *)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1075 xrealloc (kkcc_bt, kkcc_bt_stack_size * sizeof (kkcc_bt_stack_entry));
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1076 if (!kkcc_bt)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1077 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1078 stderr_out ("KKCC backtrace stack realloc failed for size %d\n",
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1079 kkcc_bt_stack_size);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1080 ABORT ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1081 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1082 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1083
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1084 static void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1085 kkcc_bt_free (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1086 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1087 xfree_1 (kkcc_bt);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1088 kkcc_bt = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1089 kkcc_bt_stack_size = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1090 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1091
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1092 static void
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1093 kkcc_bt_push (void obj, const struct memory_description desc,
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1094 int is_lisp DECLARE_KKCC_DEBUG_ARGS)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1095 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1096 kkcc_bt_depth = level;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1097 kkcc_bt[kkcc_bt_depth].obj = obj;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1098 kkcc_bt[kkcc_bt_depth].desc = desc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1099 kkcc_bt[kkcc_bt_depth].pos = pos;
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1100 kkcc_bt[kkcc_bt_depth].is_lisp = is_lisp;
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1101 kkcc_bt_depth++;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1102 if (kkcc_bt_depth >= kkcc_bt_stack_size)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1103 kkcc_bt_stack_realloc ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1104 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1105
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1106 #else /* not DEBUG_XEMACS */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1107 #define kkcc_bt_init()
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1108 #define kkcc_bt_push(obj, desc)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1109 #endif /* not DEBUG_XEMACS */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1110
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1111 /* Object memory descriptions are in the lrecord_implementation structure.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1112 But copying them to a parallel array is much more cache-friendly. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1113 const struct memory_description *lrecord_memory_descriptions[countof (lrecord_implementations_table)];
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1114
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1115 /* the initial stack size in kkcc_gc_stack_entries */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1116 #define KKCC_INIT_GC_STACK_SIZE 16384
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1117
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1118 typedef struct
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1119 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1120 void *data;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1121 const struct memory_description *desc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1122 #ifdef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1123 int level;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1124 int pos;
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1125 int is_lisp;
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1126 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1127 } kkcc_gc_stack_entry;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1128
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1129
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1130 static kkcc_gc_stack_entry *kkcc_gc_stack_ptr;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1131 static int kkcc_gc_stack_front;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1132 static int kkcc_gc_stack_rear;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1133 static int kkcc_gc_stack_size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1134
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1135 #define KKCC_INC(i) ((i + 1) % kkcc_gc_stack_size)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1136 #define KKCC_INC2(i) ((i + 2) % kkcc_gc_stack_size)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1137
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1138 #define KKCC_GC_STACK_FULL (KKCC_INC2 (kkcc_gc_stack_rear) == kkcc_gc_stack_front)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1139 #define KKCC_GC_STACK_EMPTY (KKCC_INC (kkcc_gc_stack_rear) == kkcc_gc_stack_front)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1140
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1141 static void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1142 kkcc_gc_stack_init (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1143 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1144 kkcc_gc_stack_size = KKCC_INIT_GC_STACK_SIZE;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1145 kkcc_gc_stack_ptr = (kkcc_gc_stack_entry *)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1146 xmalloc_and_zero (kkcc_gc_stack_size * sizeof (kkcc_gc_stack_entry));
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1147 if (!kkcc_gc_stack_ptr)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1148 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1149 stderr_out ("stack init failed for size %d\n", kkcc_gc_stack_size);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1150 ABORT ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1151 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1152 kkcc_gc_stack_front = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1153 kkcc_gc_stack_rear = kkcc_gc_stack_size - 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1154 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1155
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1156 static void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1157 kkcc_gc_stack_free (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1158 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1159 xfree_1 (kkcc_gc_stack_ptr);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1160 kkcc_gc_stack_ptr = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1161 kkcc_gc_stack_front = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1162 kkcc_gc_stack_rear = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1163 kkcc_gc_stack_size = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1164 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1165
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1166 static void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1167 kkcc_gc_stack_realloc (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1168 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1169 kkcc_gc_stack_entry *old_ptr = kkcc_gc_stack_ptr;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1170 int old_size = kkcc_gc_stack_size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1171 kkcc_gc_stack_size *= 2;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1172 kkcc_gc_stack_ptr = (kkcc_gc_stack_entry *)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1173 xmalloc_and_zero (kkcc_gc_stack_size * sizeof (kkcc_gc_stack_entry));
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1174 if (!kkcc_gc_stack_ptr)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1175 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1176 stderr_out ("stack realloc failed for size %d\n", kkcc_gc_stack_size);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1177 ABORT ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1178 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1179 if (kkcc_gc_stack_rear >= kkcc_gc_stack_front)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1180 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1181 int number_elements = kkcc_gc_stack_rear - kkcc_gc_stack_front + 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1182 memcpy (kkcc_gc_stack_ptr, &old_ptr[kkcc_gc_stack_front],
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1183 number_elements * sizeof (kkcc_gc_stack_entry));
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1184 kkcc_gc_stack_front = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1185 kkcc_gc_stack_rear = number_elements - 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1186 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1187 else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1188 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1189 int number_elements = old_size - kkcc_gc_stack_front;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1190 memcpy (kkcc_gc_stack_ptr, &old_ptr[kkcc_gc_stack_front],
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1191 number_elements * sizeof (kkcc_gc_stack_entry));
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1192 memcpy (&kkcc_gc_stack_ptr[number_elements], &old_ptr[0],
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1193 (kkcc_gc_stack_rear + 1) * sizeof (kkcc_gc_stack_entry));
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1194 kkcc_gc_stack_front = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1195 kkcc_gc_stack_rear = kkcc_gc_stack_rear + number_elements;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1196 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1197 xfree_1 (old_ptr);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1198 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1199
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1200 static void
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1201 kkcc_gc_stack_push (void data, const struct memory_description desc
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1202 DECLARE_KKCC_DEBUG_ARGS)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1203 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1204 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1205 GC_STAT_ENQUEUED;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1206 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1207 if (KKCC_GC_STACK_FULL)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1208 kkcc_gc_stack_realloc();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1209 kkcc_gc_stack_rear = KKCC_INC (kkcc_gc_stack_rear);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1210 kkcc_gc_stack_ptr[kkcc_gc_stack_rear].data = data;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1211 kkcc_gc_stack_ptr[kkcc_gc_stack_rear].desc = desc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1212 #ifdef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1213 kkcc_gc_stack_ptr[kkcc_gc_stack_rear].level = level;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1214 kkcc_gc_stack_ptr[kkcc_gc_stack_rear].pos = pos;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1215 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1216 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1217
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1218 #ifdef DEBUG_XEMACS
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1219
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1220 static inline void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1221 kkcc_gc_stack_push_0 (void data, const struct memory_description desc,
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1222 int is_lisp DECLARE_KKCC_DEBUG_ARGS)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1223 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1224 kkcc_gc_stack_push (data, desc KKCC_DEBUG_ARGS);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1225 kkcc_gc_stack_ptr[kkcc_gc_stack_rear].is_lisp = is_lisp;
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1226 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1227
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1228 static inline void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1229 kkcc_gc_stack_push_lisp (void data, const struct memory_description desc
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1230 DECLARE_KKCC_DEBUG_ARGS)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1231 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1232 kkcc_gc_stack_push_0 (data, desc, 1 KKCC_DEBUG_ARGS);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1233 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1234
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1235 static inline void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1236 kkcc_gc_stack_push_nonlisp (void data, const struct memory_description desc
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1237 DECLARE_KKCC_DEBUG_ARGS)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1238 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1239 kkcc_gc_stack_push_0 (data, desc, 0 KKCC_DEBUG_ARGS);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1240 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1241
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1242 #else /* not DEBUG_XEMACS */
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1243
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1244 static inline void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1245 kkcc_gc_stack_push_lisp (void data, const struct memory_description desc)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1246 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1247 kkcc_gc_stack_push (data, desc);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1248 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1249
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1250 static inline void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1251 kkcc_gc_stack_push_nonlisp (void data, const struct memory_description desc)
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1252 {
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1253 kkcc_gc_stack_push (data, desc);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1254 }
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1255
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1256 #endif /* (not) DEBUG_XEMACS */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1257
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1258 static kkcc_gc_stack_entry *
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1259 kkcc_gc_stack_pop (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1260 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1261 if (KKCC_GC_STACK_EMPTY)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1262 return 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1263 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1264 GC_STAT_DEQUEUED;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1265 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1266 #ifndef KKCC_STACK_AS_QUEUE
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1267 /* stack behaviour */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1268 return &kkcc_gc_stack_ptr[kkcc_gc_stack_rear--];
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1269 #else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1270 /* queue behaviour */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1271 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1272 int old_front = kkcc_gc_stack_front;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1273 kkcc_gc_stack_front = KKCC_INC (kkcc_gc_stack_front);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1274 return &kkcc_gc_stack_ptr[old_front];
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1275 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1276 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1277 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1278
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1279 void
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1280 kkcc_gc_stack_push_lisp_object (Lisp_Object obj DECLARE_KKCC_DEBUG_ARGS)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1281 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1282 if (XTYPE (obj) == Lisp_Type_Record)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1283 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1284 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1285 const struct memory_description *desc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1286 GC_CHECK_LHEADER_INVARIANTS (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1287 desc = RECORD_DESCRIPTION (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1288 if (! MARKED_RECORD_HEADER_P (lheader))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1289 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1290 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1291 MARK_GREY (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1292 #else /* not NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1293 MARK_RECORD_HEADER (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1294 #endif /* not NEW_GC */
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1295 kkcc_gc_stack_push_lisp ((void *) lheader, desc KKCC_DEBUG_ARGS);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1296 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1297 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1298 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1299
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1300 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1301
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1302 void
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1303 kkcc_gc_stack_repush_dirty_object (Lisp_Object obj DECLARE_KKCC_DEBUG_ARGS)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1304 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1305 if (XTYPE (obj) == Lisp_Type_Record)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1306 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1307 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1308 const struct memory_description *desc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1309 GC_STAT_REPUSHED;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1310 GC_CHECK_LHEADER_INVARIANTS (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1311 desc = RECORD_DESCRIPTION (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1312 MARK_GREY (lheader);
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1313 kkcc_gc_stack_push_lisp ((void*) lheader, desc KKCC_DEBUG_ARGS);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1314 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1315 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1316 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1317
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1318 #ifdef ERROR_CHECK_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1319 #define KKCC_DO_CHECK_FREE(obj, allow_free) \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1320 do \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1321 { \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1322 if (!allow_free && XTYPE (obj) == Lisp_Type_Record) \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1323 { \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1324 struct lrecord_header *lheader = XRECORD_LHEADER (obj); \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1325 GC_CHECK_NOT_FREE (lheader); \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1326 } \
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1327 } while (0)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1328 #else
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1329 #define KKCC_DO_CHECK_FREE(obj, allow_free) DO_NOTHING
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1330 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1331
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1332 static inline void
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1333 mark_object_maybe_checking_free (Lisp_Object obj, int allow_free
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1334 DECLARE_KKCC_DEBUG_ARGS)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1335 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1336 KKCC_DO_CHECK_FREE (obj, allow_free);
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1337 kkcc_gc_stack_push_lisp_object (obj KKCC_DEBUG_ARGS);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1338 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1339
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1340 /* This function loops all elements of a struct pointer and calls
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1341 mark_with_description with each element. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1342 static void
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1343 mark_struct_contents (const void *data,
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1344 const struct sized_memory_description *sdesc,
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1345 int count DECLARE_KKCC_DEBUG_ARGS)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1346 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1347 int i;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1348 Bytecount elsize;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1349 elsize = lispdesc_block_size (data, sdesc);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1350
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1351 for (i = 0; i < count; i++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1352 {
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1353 kkcc_gc_stack_push_nonlisp (((char ) data) + elsize i,
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1354 sdesc->description
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1355 KKCC_DEBUG_ARGS);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1356 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1357 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1358
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1359 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1360 /* This function loops all elements of a struct pointer and calls
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1361 mark_with_description with each element. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1362 static void
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1363 mark_lisp_object_block_contents (const void *data,
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1364 const struct sized_memory_description *sdesc,
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1365 int count DECLARE_KKCC_DEBUG_ARGS)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1366 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1367 int i;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1368 Bytecount elsize;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1369 elsize = lispdesc_block_size (data, sdesc);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1370
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1371 for (i = 0; i < count; i++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1372 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1373 const Lisp_Object obj = wrap_pointer_1 (((char ) data) + elsize i);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1374 if (XTYPE (obj) == Lisp_Type_Record)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1375 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1376 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1377 const struct memory_description *desc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1378 GC_CHECK_LHEADER_INVARIANTS (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1379 desc = sdesc->description;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1380 if (! MARKED_RECORD_HEADER_P (lheader))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1381 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1382 MARK_GREY (lheader);
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1383 kkcc_gc_stack_push_lisp ((void *) lheader, desc KKCC_DEBUG_ARGS);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1384 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1385 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1386 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1387 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1388
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1389 #endif /* not NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1390
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1391 /* This function implements the KKCC mark algorithm.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1392 Instead of calling mark_object, all the alive Lisp_Objects are pushed
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1393 on the kkcc_gc_stack. This function processes all elements on the stack
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1394 according to their descriptions. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1395 static void
5054 24372c7e0e8f fix build problem with pdump Ben Wing <ben@xemacs.org> parents: 5046 diff changeset	1396 kkcc_marking (int USED_IF_NEW_GC (cnt))
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1397 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1398 kkcc_gc_stack_entry *stack_entry = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1399 void *data = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1400 const struct memory_description *desc = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1401 int pos;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1402 #ifdef NEW_GC
5046 d4f666cda5e6 some random fixups Ben Wing <ben@xemacs.org> parents: 5016 diff changeset	1403 int obj_count = cnt;
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1404 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1405 #ifdef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1406 int level = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1407 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1408
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1409 while ((stack_entry = kkcc_gc_stack_pop ()) != 0)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1410 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1411 data = stack_entry->data;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1412 desc = stack_entry->desc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1413 #ifdef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1414 level = stack_entry->level + 1;
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1415 kkcc_bt_push (data, desc, stack_entry->is_lisp, stack_entry->level,
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1416 stack_entry->pos);
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1417 #else
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1418 kkcc_bt_push (data, desc);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1419 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1420
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1421 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1422 /* Mark black if object is currently grey. This first checks,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1423 if the object is really allocated on the mc-heap. If it is,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1424 it can be marked black; if it is not, it cannot be marked. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1425 maybe_mark_black (data);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1426 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1427
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1428 if (!data) continue;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1429
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1430 gc_checking_assert (data);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1431 gc_checking_assert (desc);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1432
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1433 for (pos = 0; desc[pos].type != XD_END; pos++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1434 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1435 const struct memory_description *desc1 = &desc[pos];
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1436 const void *rdata =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1437 (const char *) data + lispdesc_indirect_count (desc1->offset,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1438 desc, data);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1439 union_switcheroo:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1440
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1441 /* If the flag says don't mark, then don't mark. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1442 if ((desc1->flags) & XD_FLAG_NO_KKCC)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1443 continue;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1444
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1445 switch (desc1->type)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1446 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1447 case XD_BYTECOUNT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1448 case XD_ELEMCOUNT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1449 case XD_HASHCODE:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1450 case XD_INT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1451 case XD_LONG:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1452 case XD_INT_RESET:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1453 case XD_LO_LINK:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1454 case XD_OPAQUE_PTR:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1455 case XD_OPAQUE_DATA_PTR:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1456 case XD_ASCII_STRING:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1457 case XD_DOC_STRING:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1458 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1459 case XD_LISP_OBJECT:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1460 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1461 const Lisp_Object stored_obj = (const Lisp_Object ) rdata;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1462
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1463 /* Because of the way that tagged objects work (pointers and
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1464 Lisp_Objects have the same representation), XD_LISP_OBJECT
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1465 can be used for untagged pointers. They might be NULL,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1466 though. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1467 if (EQ (*stored_obj, Qnull_pointer))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1468 break;
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1469 #ifdef NEW_GC
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1470 mark_object_maybe_checking_free (*stored_obj, 0
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1471 KKCC_DEBUG_ARGS);
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1472 #else /* not NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1473 mark_object_maybe_checking_free
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1474 (*stored_obj, (desc1->flags) & XD_FLAG_FREE_LISP_OBJECT
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1475 KKCC_DEBUG_ARGS);
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1476 #endif /* not NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1477 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1478 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1479 case XD_LISP_OBJECT_ARRAY:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1480 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1481 int i;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1482 EMACS_INT count =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1483 lispdesc_indirect_count (desc1->data1, desc, data);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1484
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1485 for (i = 0; i < count; i++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1486 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1487 const Lisp_Object *stored_obj =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1488 (const Lisp_Object *) rdata + i;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1489
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1490 if (EQ (*stored_obj, Qnull_pointer))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1491 break;
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1492 #ifdef NEW_GC
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1493 mark_object_maybe_checking_free
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1494 (*stored_obj, 0 KKCC_DEBUG_ARGS);
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1495 #else /* not NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1496 mark_object_maybe_checking_free
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1497 (*stored_obj, (desc1->flags) & XD_FLAG_FREE_LISP_OBJECT
6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1498 KKCC_DEBUG_ARGS);
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1499 #endif /* not NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1500 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1501 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1502 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1503 #ifdef NEW_GC
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1504 case XD_INLINE_LISP_OBJECT_BLOCK_PTR:
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1505 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1506 EMACS_INT count = lispdesc_indirect_count (desc1->data1, desc,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1507 data);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1508 const struct sized_memory_description *sdesc =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1509 lispdesc_indirect_description (data, desc1->data2.descr);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1510 const char dobj = (const char **) rdata;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1511 if (dobj)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1512 mark_lisp_object_block_contents
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1513 (dobj, sdesc, count KKCC_DEBUG_ARGS);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1514 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1515 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1516 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1517 case XD_BLOCK_PTR:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1518 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1519 EMACS_INT count = lispdesc_indirect_count (desc1->data1, desc,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1520 data);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1521 const struct sized_memory_description *sdesc =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1522 lispdesc_indirect_description (data, desc1->data2.descr);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1523 const char dobj = (const char **) rdata;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1524 if (dobj)
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1525 mark_struct_contents (dobj, sdesc, count KKCC_DEBUG_ARGS);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1526 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1527 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1528 case XD_BLOCK_ARRAY:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1529 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1530 EMACS_INT count = lispdesc_indirect_count (desc1->data1, desc,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1531 data);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1532 const struct sized_memory_description *sdesc =
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1533 lispdesc_indirect_description (data, desc1->data2.descr);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1534
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1535 mark_struct_contents (rdata, sdesc, count KKCC_DEBUG_ARGS);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1536 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1537 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1538 case XD_UNION:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1539 case XD_UNION_DYNAMIC_SIZE:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1540 desc1 = lispdesc_process_xd_union (desc1, desc, data);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1541 if (desc1)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1542 goto union_switcheroo;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1543 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1544
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1545 default:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1546 stderr_out ("Unsupported description type : %d\n", desc1->type);
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1547 kkcc_detailed_backtrace ();
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1548 ABORT ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1549 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1550 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1551
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1552 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1553 if (cnt)
5046 d4f666cda5e6 some random fixups Ben Wing <ben@xemacs.org> parents: 5016 diff changeset	1554 if (!--obj_count)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1555 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1556 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1557 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1558 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1559 #endif /* USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1560
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1561 /* I hate duplicating all this crap! */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1562 int
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1563 marked_p (Lisp_Object obj)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1564 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1565 /* Checks we used to perform. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1566 /* if (EQ (obj, Qnull_pointer)) return 1; */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1567 /* if (!POINTER_TYPE_P (XGCTYPE (obj))) return 1; */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1568 /* if (PURIFIED (XPNTR (obj))) return 1; */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1569
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1570 if (XTYPE (obj) == Lisp_Type_Record)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1571 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1572 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1573
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1574 GC_CHECK_LHEADER_INVARIANTS (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1575
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1576 return MARKED_RECORD_HEADER_P (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1577 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1578 return 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1579 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1580
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1581
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1582 /* Mark reference to a Lisp_Object. If the object referred to has not been
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1583 seen yet, recursively mark all the references contained in it. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1584 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1585 mark_object (
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1586 #ifdef USE_KKCC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1587 Lisp_Object UNUSED (obj)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1588 #else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1589 Lisp_Object obj
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1590 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1591 )
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1592 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1593 #ifdef USE_KKCC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1594 /* this code should never be reached when configured for KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1595 stderr_out ("KKCC: Invalid mark_object call.\n");
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1596 stderr_out ("Replace mark_object with kkcc_gc_stack_push_lisp_object.\n");
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1597 ABORT ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1598 #else /* not USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1599
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1600 tail_recurse:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1601
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1602 /* Checks we used to perform */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1603 /* if (EQ (obj, Qnull_pointer)) return; */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1604 /* if (!POINTER_TYPE_P (XGCTYPE (obj))) return; */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1605 /* if (PURIFIED (XPNTR (obj))) return; */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1606
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1607 if (XTYPE (obj) == Lisp_Type_Record)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1608 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1609 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1610
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1611 GC_CHECK_LHEADER_INVARIANTS (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1612
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1613 /* We handle this separately, above, so we can mark free objects */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1614 GC_CHECK_NOT_FREE (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1615
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1616 /* All c_readonly objects have their mark bit set,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1617 so that we only need to check the mark bit here. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1618 if (! MARKED_RECORD_HEADER_P (lheader))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1619 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1620 MARK_RECORD_HEADER (lheader);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1621
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1622 if (RECORD_MARKER (lheader))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1623 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1624 obj = RECORD_MARKER (lheader) (obj);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1625 if (!NILP (obj)) goto tail_recurse;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1626 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1627 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1628 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1629 #endif /* not KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1630 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1631
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1632
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1633 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1634 /* Hooks */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1635 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1636
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1637 /* Nonzero when calling certain hooks or doing other things where a GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1638 would be bad. It prevents infinite recursive calls to gc. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1639 int gc_currently_forbidden;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1640
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1641 int
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1642 begin_gc_forbidden (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1643 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1644 return internal_bind_int (&gc_currently_forbidden, 1);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1645 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1646
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1647 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1648 end_gc_forbidden (int count)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1649 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1650 unbind_to (count);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1651 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1652
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1653 /* Hooks. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1654 Lisp_Object Vpre_gc_hook, Qpre_gc_hook;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1655 Lisp_Object Vpost_gc_hook, Qpost_gc_hook;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1656
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1657 /* Maybe we want to use this when doing a "panic" gc after memory_full()? */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1658 static int gc_hooks_inhibited;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1659
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1660 struct post_gc_action
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1661 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1662 void (fun) (void );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1663 void *arg;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1664 };
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1665
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1666 typedef struct post_gc_action post_gc_action;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1667
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1668 typedef struct
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1669 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1670 Dynarr_declare (post_gc_action);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1671 } post_gc_action_dynarr;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1672
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1673 static post_gc_action_dynarr *post_gc_actions;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1674
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1675 /* Register an action to be called at the end of GC.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1676 gc_in_progress is 0 when this is called.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1677 This is used when it is discovered that an action needs to be taken,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1678 but it's during GC, so it's not safe. (e.g. in a finalize method.)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1679
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1680 As a general rule, do not use Lisp objects here.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1681 And NEVER signal an error.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1682 */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1683
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1684 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1685 register_post_gc_action (void (fun) (void ), void *arg)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1686 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1687 post_gc_action action;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1688
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1689 if (!post_gc_actions)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1690 post_gc_actions = Dynarr_new (post_gc_action);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1691
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1692 action.fun = fun;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1693 action.arg = arg;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1694
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1695 Dynarr_add (post_gc_actions, action);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1696 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1697
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1698 static void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1699 run_post_gc_actions (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1700 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1701 int i;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1702
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1703 if (post_gc_actions)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1704 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1705 for (i = 0; i < Dynarr_length (post_gc_actions); i++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1706 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1707 post_gc_action action = Dynarr_at (post_gc_actions, i);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1708 (action.fun) (action.arg);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1709 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1710
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1711 Dynarr_reset (post_gc_actions);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1712 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1713 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1714
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1715 #ifdef NEW_GC
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1716 /* Asynchronous finalization. */
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1717 typedef struct finalize_elem
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1718 {
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1719 Lisp_Object obj;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1720 struct finalize_elem *next;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1721 } finalize_elem;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1722
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1723 finalize_elem *Vall_finalizable_objs;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1724 Lisp_Object Vfinalizers_to_run;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1725
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1726 void
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1727 add_finalizable_obj (Lisp_Object obj)
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1728 {
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1729 finalize_elem *next = Vall_finalizable_objs;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1730 Vall_finalizable_objs =
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1731 (finalize_elem *) xmalloc_and_zero (sizeof (finalize_elem));
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1732 Vall_finalizable_objs->obj = obj;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1733 Vall_finalizable_objs->next = next;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1734 }
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1735
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1736 void
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1737 register_for_finalization (void)
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1738 {
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1739 finalize_elem *rest = Vall_finalizable_objs;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1740
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1741 if (!rest)
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1742 return;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1743
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1744 while (!marked_p (rest->obj))
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1745 {
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1746 finalize_elem *temp = rest;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1747 Vfinalizers_to_run = Fcons (rest->obj, Vfinalizers_to_run);
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1748 Vall_finalizable_objs = rest->next;
4976 16112448d484 Rename xfree(FOO, TYPE) -> xfree(FOO) Ben Wing <ben@xemacs.org> parents: 4969 diff changeset	1749 xfree (temp);
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1750 rest = Vall_finalizable_objs;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1751 }
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1752
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1753 while (rest->next)
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1754 {
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1755 if (LRECORDP (rest->next->obj)
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1756 && !marked_p (rest->next->obj))
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1757 {
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1758 finalize_elem *temp = rest->next;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1759 Vfinalizers_to_run = Fcons (rest->next->obj, Vfinalizers_to_run);
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1760 rest->next = rest->next->next;
4976 16112448d484 Rename xfree(FOO, TYPE) -> xfree(FOO) Ben Wing <ben@xemacs.org> parents: 4969 diff changeset	1761 xfree (temp);
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1762 }
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1763 else
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1764 {
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1765 rest = rest->next;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1766 }
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1767 }
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1768 /* Keep objects alive that need to be finalized by marking
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1769 Vfinalizers_to_run transitively. */
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1770 kkcc_gc_stack_push_lisp_object_0 (Vfinalizers_to_run);
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1771 kkcc_marking (0);
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1772 }
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1773
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1774 void
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1775 run_finalizers (void)
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1776 {
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1777 Lisp_Object rest;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1778 for (rest = Vfinalizers_to_run; !NILP (rest); rest = XCDR (rest))
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1779 {
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1780 MC_ALLOC_CALL_FINALIZER (XPNTR (XCAR (rest)));
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1781 }
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1782 Vfinalizers_to_run = Qnil;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1783 }
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1784 #endif /* not NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1785
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1786
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1787 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1788 /* Garbage Collection */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1789 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1790
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1791 /* Enable/disable incremental garbage collection during runtime. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1792 int allow_incremental_gc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1793
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1794 /* For profiling. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1795 static Lisp_Object QSin_garbage_collection;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1796
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1797 /* Nonzero means display messages at beginning and end of GC. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1798 int garbage_collection_messages;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1799
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1800 /* "Garbage collecting" */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1801 Lisp_Object Vgc_message;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1802 Lisp_Object Vgc_pointer_glyph;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1803 static const Ascbyte gc_default_message[] = "Garbage collecting";
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1804 Lisp_Object Qgarbage_collecting;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1805
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1806 /* "Locals" during GC. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1807 struct frame *f;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1808 int speccount;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1809 int cursor_changed;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1810 Lisp_Object pre_gc_cursor;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1811
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1812 /* PROFILE_DECLARE */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1813 int do_backtrace;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1814 struct backtrace backtrace;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1815
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1816 /* Maximum amount of C stack to save when a GC happens. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1817 #ifndef MAX_SAVE_STACK
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1818 #define MAX_SAVE_STACK 0 /* 16000 */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1819 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1820
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	1821 static void
3267 a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1822 show_gc_cursor_and_message (void)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1823 {
3267 a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1824 /* Now show the GC cursor/message. */
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1825 pre_gc_cursor = Qnil;
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1826 cursor_changed = 0;
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1827
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1828 /* We used to call selected_frame() here.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1829
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1830 The following functions cannot be called inside GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1831 so we move to after the above tests. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1832 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1833 Lisp_Object frame;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1834 Lisp_Object device = Fselected_device (Qnil);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1835 if (NILP (device)) /* Could happen during startup, eg. if always_gc */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1836 return;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1837 frame = Fselected_frame (device);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1838 if (NILP (frame))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1839 invalid_state ("No frames exist on device", device);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1840 f = XFRAME (frame);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1841 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1842
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1843 if (!noninteractive)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1844 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1845 if (FRAME_WIN_P (f))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1846 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1847 Lisp_Object frame = wrap_frame (f);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1848 Lisp_Object cursor = glyph_image_instance (Vgc_pointer_glyph,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1849 FRAME_SELECTED_WINDOW (f),
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1850 ERROR_ME_NOT, 1);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1851 pre_gc_cursor = f->pointer;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1852 if (POINTER_IMAGE_INSTANCEP (cursor)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1853 /* don't change if we don't know how to change back. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1854 && POINTER_IMAGE_INSTANCEP (pre_gc_cursor))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1855 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1856 cursor_changed = 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1857 Fset_frame_pointer (frame, cursor);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1858 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1859 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1860
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1861 /* Don't print messages to the stream device. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1862 if (!cursor_changed && !FRAME_STREAM_P (f))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1863 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1864 if (garbage_collection_messages)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1865 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1866 Lisp_Object args[2], whole_msg;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1867 args[0] = (STRINGP (Vgc_message) ? Vgc_message :
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1868 build_msg_string (gc_default_message));
4952 19a72041c5ed Mule-izing, various fixes related to char * arguments Ben Wing <ben@xemacs.org> parents: 4934 diff changeset	1869 args[1] = build_ascstring ("...");
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1870 whole_msg = Fconcat (2, args);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1871 echo_area_message (f, (Ibyte *) 0, whole_msg, 0, -1,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1872 Qgarbage_collecting);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1873 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1874 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1875 }
3267 a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1876 }
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1877
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	1878 static void
3267 a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1879 remove_gc_cursor_and_message (void)
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1880 {
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1881 /* Now remove the GC cursor/message */
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1882 if (!noninteractive)
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1883 {
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1884 if (cursor_changed)
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1885 Fset_frame_pointer (wrap_frame (f), pre_gc_cursor);
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1886 else if (!FRAME_STREAM_P (f))
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1887 {
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1888 /* Show "...done" only if the echo area would otherwise be empty. */
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1889 if (NILP (clear_echo_area (selected_frame (),
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1890 Qgarbage_collecting, 0)))
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1891 {
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1892 if (garbage_collection_messages)
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1893 {
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1894 Lisp_Object args[2], whole_msg;
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1895 args[0] = (STRINGP (Vgc_message) ? Vgc_message :
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1896 build_msg_string (gc_default_message));
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1897 args[1] = build_msg_string ("... done");
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1898 whole_msg = Fconcat (2, args);
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1899 echo_area_message (selected_frame (), (Ibyte *) 0,
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1900 whole_msg, 0, -1,
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1901 Qgarbage_collecting);
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1902 }
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1903 }
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1904 }
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1905 }
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1906 }
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1907
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	1908 static void
3267 a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1909 gc_prepare (void)
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1910 {
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1911 #if MAX_SAVE_STACK > 0
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1912 char stack_top_variable;
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1913 extern char *stack_bottom;
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1914 #endif
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1915
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1916 #ifdef NEW_GC
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1917 GC_STAT_START_NEW_GC;
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1918 GC_SET_PHASE (INIT_GC);
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1919 #endif /* NEW_GC */
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1920
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1921 do_backtrace = profiling_active \|\| backtrace_with_internal_sections;
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1922
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1923 assert (!gc_in_progress);
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1924 assert (!in_display \|\| gc_currently_forbidden);
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1925
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1926 PROFILE_RECORD_ENTERING_SECTION (QSin_garbage_collection);
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1927
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1928 need_to_signal_post_gc = 0;
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1929 recompute_funcall_allocation_flag ();
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1930
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1931 if (!gc_hooks_inhibited)
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1932 run_hook_trapping_problems
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1933 (Qgarbage_collecting, Qpre_gc_hook,
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	1934 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1935
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1936 /***** Now we actually start the garbage collection. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1937
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1938 gc_in_progress = 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1939 #ifndef NEW_GC
5014 c2e0c3af5fe3 cleanups to debug-print, try harder to make it work during GC Ben Wing <ben@xemacs.org> parents: 4976 diff changeset	1940 inhibit_non_essential_conversion_operations++;
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	1941 #endif /* not NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1942
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1943 #if MAX_SAVE_STACK > 0
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1944
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1945 /* Save a copy of the contents of the stack, for debugging. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1946 if (!purify_flag)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1947 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1948 /* Static buffer in which we save a copy of the C stack at each GC. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1949 static char *stack_copy;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1950 static Bytecount stack_copy_size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1951
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1952 ptrdiff_t stack_diff = &stack_top_variable - stack_bottom;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1953 Bytecount stack_size = (stack_diff > 0 ? stack_diff : -stack_diff);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1954 if (stack_size < MAX_SAVE_STACK)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1955 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1956 if (stack_copy_size < stack_size)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1957 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1958 stack_copy = (char *) xrealloc (stack_copy, stack_size);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1959 stack_copy_size = stack_size;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1960 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1961
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1962 memcpy (stack_copy,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1963 stack_diff > 0 ? stack_bottom : &stack_top_variable,
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1964 stack_size);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1965 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1966 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1967 #endif /* MAX_SAVE_STACK > 0 */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1968
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1969 /* Do some totally ad-hoc resource clearing. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1970 /* #### generalize this? */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1971 clear_event_resource ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1972 cleanup_specifiers ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1973 cleanup_buffer_undo_lists ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1974 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1975
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	1976 static void
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1977 gc_mark_root_set (
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1978 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1979 enum gc_phase phase
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1980 #else /* not NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1981 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1982 #endif /* not NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1983 )
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1984 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1985 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1986 GC_SET_PHASE (phase);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1987 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1988
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1989 /* Mark all the special slots that serve as the roots of accessibility. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1990
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1991 #ifdef USE_KKCC
5169 6c6d78781d59 cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup Ben Wing <ben@xemacs.org> parents: 5168 diff changeset	1992 # define mark_object(obj) kkcc_gc_stack_push_lisp_object_0 (obj)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1993 #endif /* USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1994
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1995 { /* staticpro() */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1996 Lisp_Object **p = Dynarr_begin (staticpros);
4921 17362f371cc2 add more byte-code assertions and better failure output Ben Wing <ben@xemacs.org> parents: 4502 diff changeset	1997 Elemcount len = Dynarr_length (staticpros);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	1998 Elemcount count;
4921 17362f371cc2 add more byte-code assertions and better failure output Ben Wing <ben@xemacs.org> parents: 4502 diff changeset	1999 for (count = 0; count < len; count++, p++)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2000 /* Need to check if the pointer in the staticpro array is not
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2001 NULL. A gc can occur after variable is added to the staticpro
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2002 array and _before_ it is correctly initialized. In this case
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2003 its value is NULL, which we have to catch here. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2004 if (*p)
3486 4cc26ec3f0de [xemacs-hg @ 2006-07-02 07:32:19 by stephent] stephent parents: 3313 diff changeset	2005 mark_object (**p);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2006 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2007
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2008 { /* staticpro_nodump() */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2009 Lisp_Object **p = Dynarr_begin (staticpros_nodump);
4921 17362f371cc2 add more byte-code assertions and better failure output Ben Wing <ben@xemacs.org> parents: 4502 diff changeset	2010 Elemcount len = Dynarr_length (staticpros_nodump);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2011 Elemcount count;
4921 17362f371cc2 add more byte-code assertions and better failure output Ben Wing <ben@xemacs.org> parents: 4502 diff changeset	2012 for (count = 0; count < len; count++, p++)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2013 /* Need to check if the pointer in the staticpro array is not
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2014 NULL. A gc can occur after variable is added to the staticpro
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2015 array and _before_ it is correctly initialized. In this case
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2016 its value is NULL, which we have to catch here. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2017 if (*p)
3486 4cc26ec3f0de [xemacs-hg @ 2006-07-02 07:32:19 by stephent] stephent parents: 3313 diff changeset	2018 mark_object (**p);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2019 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2020
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2021 #ifdef NEW_GC
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2022 { /* mcpro () */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2023 Lisp_Object *p = Dynarr_begin (mcpros);
4921 17362f371cc2 add more byte-code assertions and better failure output Ben Wing <ben@xemacs.org> parents: 4502 diff changeset	2024 Elemcount len = Dynarr_length (mcpros);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2025 Elemcount count;
4921 17362f371cc2 add more byte-code assertions and better failure output Ben Wing <ben@xemacs.org> parents: 4502 diff changeset	2026 for (count = 0; count < len; count++, p++)
17362f371cc2 add more byte-code assertions and better failure output Ben Wing <ben@xemacs.org> parents: 4502 diff changeset	2027 mark_object (*p);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2028 }
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2029 #endif /* NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2030
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2031 { /* GCPRO() */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2032 struct gcpro *tail;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2033 int i;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2034 for (tail = gcprolist; tail; tail = tail->next)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2035 for (i = 0; i < tail->nvars; i++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2036 mark_object (tail->var[i]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2037 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2038
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2039 { /* specbind() */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2040 struct specbinding *bind;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2041 for (bind = specpdl; bind != specpdl_ptr; bind++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2042 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2043 mark_object (bind->symbol);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2044 mark_object (bind->old_value);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2045 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2046 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2047
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2048 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2049 struct catchtag *c;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2050 for (c = catchlist; c; c = c->next)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2051 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2052 mark_object (c->tag);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2053 mark_object (c->val);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2054 mark_object (c->actual_tag);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2055 mark_object (c->backtrace);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2056 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2057 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2058
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2059 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2060 struct backtrace *backlist;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2061 for (backlist = backtrace_list; backlist; backlist = backlist->next)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2062 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2063 int nargs = backlist->nargs;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2064 int i;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2065
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2066 mark_object (*backlist->function);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2067 if (nargs < 0 /* nargs == UNEVALLED \|\| nargs == MANY */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2068 /* might be fake (internal profiling entry) */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2069 && backlist->args)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2070 mark_object (backlist->args[0]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2071 else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2072 for (i = 0; i < nargs; i++)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2073 mark_object (backlist->args[i]);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2074 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2075 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2076
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2077 mark_profiling_info ();
5191 71ee43b8a74d Add #'equalp as a hash test by default; add #'define-hash-table-test, GNU API Aidan Kehoe <kehoea@parhasard.net> parents: 5169 diff changeset	2078
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2079 #ifdef USE_KKCC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2080 # undef mark_object
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2081 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2082 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2083
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	2084 static void
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2085 gc_finish_mark (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2086 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2087 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2088 GC_SET_PHASE (FINISH_MARK);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2089 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2090 init_marking_ephemerons ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2091
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2092 while (finish_marking_weak_hash_tables () > 0 \|\|
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2093 finish_marking_weak_lists () > 0 \|\|
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2094 continue_marking_ephemerons () > 0)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2095 #ifdef USE_KKCC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2096 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2097 kkcc_marking (0);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2098 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2099 #else /* not USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2100 ;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2101 #endif /* not USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2102
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2103 /* At this point, we know which objects need to be finalized: we
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2104 still need to resurrect them */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2105
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2106 while (finish_marking_ephemerons () > 0 \|\|
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2107 finish_marking_weak_lists () > 0 \|\|
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2108 finish_marking_weak_hash_tables () > 0)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2109 #ifdef USE_KKCC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2110 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2111 kkcc_marking (0);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2112 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2113 #else /* not USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2114 ;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2115 #endif /* not USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2116
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2117 /* And prune (this needs to be called after everything else has been
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2118 marked and before we do any sweeping). */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2119 /* #### this is somewhat ad-hoc and should probably be an object
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2120 method */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2121 prune_weak_hash_tables ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2122 prune_weak_lists ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2123 prune_specifiers ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2124 prune_syntax_tables ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2125
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2126 prune_ephemerons ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2127 prune_weak_boxes ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2128 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2129
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2130 #ifdef NEW_GC
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	2131 static void
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2132 gc_finalize (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2133 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2134 GC_SET_PHASE (FINALIZE);
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2135 register_for_finalization ();
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2136 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2137
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	2138 static void
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2139 gc_sweep (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2140 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2141 GC_SET_PHASE (SWEEP);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2142 mc_sweep ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2143 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2144 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2145
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2146
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	2147 static void
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2148 gc_finish (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2149 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2150 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2151 GC_SET_PHASE (FINISH_GC);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2152 #endif /* NEW_GC */
5158 9e0b43d3095c more cleanups to object-memory-usage stuff Ben Wing <ben@xemacs.org> parents: 5142 diff changeset	2153 finish_object_memory_usage_stats ();
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2154 consing_since_gc = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2155 #ifndef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2156 /* Allow you to set it really fucking low if you really want ... */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2157 if (gc_cons_threshold < 10000)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2158 gc_cons_threshold = 10000;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2159 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2160 recompute_need_to_garbage_collect ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2161
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2162 #ifndef NEW_GC
5014 c2e0c3af5fe3 cleanups to debug-print, try harder to make it work during GC Ben Wing <ben@xemacs.org> parents: 4976 diff changeset	2163 inhibit_non_essential_conversion_operations--;
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2164 #endif /* not NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2165 gc_in_progress = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2166
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2167 run_post_gc_actions ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2168
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2169 /***** End of garbage collection ******/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2170
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2171 #ifndef NEW_GC
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2172 if (!breathing_space)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2173 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2174 breathing_space = malloc (4096 - MALLOC_OVERHEAD);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2175 }
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2176 #endif /* not NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2177
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2178 need_to_signal_post_gc = 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2179 funcall_allocation_flag = 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2180
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2181 PROFILE_RECORD_EXITING_SECTION (QSin_garbage_collection);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2182
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2183 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2184 GC_SET_PHASE (NONE);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2185 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2186 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2187
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2188 #ifdef NEW_GC
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	2189 static void
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2190 gc_suspend_mark_phase (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2191 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2192 PROFILE_RECORD_EXITING_SECTION (QSin_garbage_collection);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2193 write_barrier_enabled = 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2194 consing_since_gc = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2195 vdb_start_dirty_bits_recording ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2196 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2197
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	2198 static int
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2199 gc_resume_mark_phase (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2200 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2201 PROFILE_RECORD_ENTERING_SECTION (QSin_garbage_collection);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2202 assert (write_barrier_enabled);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2203 vdb_stop_dirty_bits_recording ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2204 write_barrier_enabled = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2205 return vdb_read_dirty_bits ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2206 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2207
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	2208 static int
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2209 gc_mark (int incremental)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2210 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2211 GC_SET_PHASE (MARK);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2212 if (!incremental)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2213 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2214 kkcc_marking (0);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2215 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2216 else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2217 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2218 kkcc_marking (gc_incremental_traversal_threshold);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2219 if (!KKCC_GC_STACK_EMPTY)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2220 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2221 gc_suspend_mark_phase ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2222 return 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2223 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2224 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2225 return 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2226 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2227
5016 2ade80e8c640 enable more warnings and fix them Ben Wing <ben@xemacs.org> parents: 5014 diff changeset	2228 static int
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2229 gc_resume_mark (int incremental)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2230 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2231 if (!incremental)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2232 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2233 if (!KKCC_GC_STACK_EMPTY)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2234 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2235 GC_STAT_RESUME_GC;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2236 /* An incremental garbage collection is already running ---
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2237 now wrap it up and resume it atomically. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2238 gc_resume_mark_phase ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2239 gc_mark_root_set (REPUSH_ROOT_SET);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2240 kkcc_marking (0);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2241 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2242 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2243 else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2244 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2245 int repushed_objects;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2246 int mark_work;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2247 GC_STAT_RESUME_GC;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2248 repushed_objects = gc_resume_mark_phase ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2249 mark_work = (gc_incremental_traversal_threshold > repushed_objects) ?
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2250 gc_incremental_traversal_threshold : repushed_objects;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2251 kkcc_marking (mark_work);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2252 if (KKCC_GC_STACK_EMPTY)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2253 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2254 /* Mark root set again and finish up marking. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2255 gc_mark_root_set (REPUSH_ROOT_SET);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2256 kkcc_marking (0);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2257 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2258 else
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2259 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2260 gc_suspend_mark_phase ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2261 return 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2262 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2263 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2264 return 1;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2265 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2266
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2267
5046 d4f666cda5e6 some random fixups Ben Wing <ben@xemacs.org> parents: 5016 diff changeset	2268 static void
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2269 gc_1 (int incremental)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2270 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2271 switch (GC_PHASE)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2272 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2273 case NONE:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2274 gc_prepare ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2275 kkcc_gc_stack_init();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2276 #ifdef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2277 kkcc_bt_init ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2278 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2279 case INIT_GC:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2280 gc_mark_root_set (PUSH_ROOT_SET);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2281 case PUSH_ROOT_SET:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2282 if (!gc_mark (incremental))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2283 return; /* suspend gc */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2284 case MARK:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2285 if (!KKCC_GC_STACK_EMPTY)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2286 if (!gc_resume_mark (incremental))
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2287 return; /* suspend gc */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2288 gc_finish_mark ();
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2289 case FINISH_MARK:
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2290 gc_finalize ();
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2291 kkcc_gc_stack_free ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2292 #ifdef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2293 kkcc_bt_free ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2294 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2295 case FINALIZE:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2296 gc_sweep ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2297 case SWEEP:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2298 gc_finish ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2299 case FINISH_GC:
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2300 break;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2301 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2302 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2303
5046 d4f666cda5e6 some random fixups Ben Wing <ben@xemacs.org> parents: 5016 diff changeset	2304 static void
d4f666cda5e6 some random fixups Ben Wing <ben@xemacs.org> parents: 5016 diff changeset	2305 gc (int incremental)
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2306 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2307 if (gc_currently_forbidden
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2308 \|\| in_display
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2309 \|\| preparing_for_armageddon)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2310 return;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2311
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2312 /* Very important to prevent GC during any of the following
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2313 stuff that might run Lisp code; otherwise, we'll likely
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2314 have infinite GC recursion. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2315 speccount = begin_gc_forbidden ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2316
3267 a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	2317 show_gc_cursor_and_message ();
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	2318
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2319 gc_1 (incremental);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2320
3267 a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	2321 remove_gc_cursor_and_message ();
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	2322
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2323 /* now stop inhibiting GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2324 unbind_to (speccount);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2325 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2326
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2327 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2328 gc_full (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2329 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2330 gc (0);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2331 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2332
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2333 DEFUN ("gc-full", Fgc_full, 0, 0, "", /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2334 This function performs a full garbage collection. If an incremental
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2335 garbage collection is already running, it completes without any
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2336 further interruption. This function guarantees that unused objects
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2337 are freed when it returns. Garbage collection happens automatically if
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2338 the client allocates more than `gc-cons-threshold' bytes of Lisp data
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2339 since the previous garbage collection.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2340 */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2341 ())
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2342 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2343 gc_full ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2344 return Qt;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2345 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2346
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2347 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2348 gc_incremental (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2349 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2350 gc (allow_incremental_gc);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2351 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2352
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2353 DEFUN ("gc-incremental", Fgc_incremental, 0, 0, "", /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2354 This function starts an incremental garbage collection. If an
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2355 incremental garbage collection is already running, the next cycle
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2356 starts. Note that this function has not necessarily freed any memory
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2357 when it returns. This function only guarantees, that the traversal of
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2358 the heap makes progress. The next cycle of incremental garbage
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2359 collection happens automatically if the client allocates more than
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2360 `gc-incremental-cons-threshold' bytes of Lisp data since previous
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2361 garbage collection.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2362 */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2363 ())
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2364 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2365 gc_incremental ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2366 return Qt;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2367 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2368 #else /* not NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2369 void garbage_collect_1 (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2370 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2371 if (gc_in_progress
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2372 \|\| gc_currently_forbidden
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2373 \|\| in_display
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2374 \|\| preparing_for_armageddon)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2375 return;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2376
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2377 /* Very important to prevent GC during any of the following
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2378 stuff that might run Lisp code; otherwise, we'll likely
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2379 have infinite GC recursion. */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2380 speccount = begin_gc_forbidden ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2381
3267 a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	2382 show_gc_cursor_and_message ();
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	2383
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2384 gc_prepare ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2385 #ifdef USE_KKCC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2386 kkcc_gc_stack_init();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2387 #ifdef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2388 kkcc_bt_init ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2389 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2390 #endif /* USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2391 gc_mark_root_set ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2392 #ifdef USE_KKCC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2393 kkcc_marking (0);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2394 #endif /* USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2395 gc_finish_mark ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2396 #ifdef USE_KKCC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2397 kkcc_gc_stack_free ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2398 #ifdef DEBUG_XEMACS
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2399 kkcc_bt_free ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2400 #endif
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2401 #endif /* USE_KKCC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2402 gc_sweep_1 ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2403 gc_finish ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2404
3267 a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	2405 remove_gc_cursor_and_message ();
a0de8be91f1b [xemacs-hg @ 2006-03-02 17:11:45 by crestani] crestani parents: 3263 diff changeset	2406
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2407 /* now stop inhibiting GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2408 unbind_to (speccount);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2409 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2410 #endif /* not NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2411
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2412
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2413 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2414 /* Initializations */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2415 /************************************************************************/
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2416
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2417 /* Initialization */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2418 static void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2419 common_init_gc_early (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2420 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2421 Vgc_message = Qzero;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2422
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2423 gc_currently_forbidden = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2424 gc_hooks_inhibited = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2425
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2426 need_to_garbage_collect = always_gc;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2427
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2428 gc_cons_threshold = GC_CONS_THRESHOLD;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2429 gc_cons_percentage = 40; /* #### what is optimal? */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2430 total_gc_usage_set = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2431 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2432 gc_cons_incremental_threshold = GC_CONS_INCREMENTAL_THRESHOLD;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2433 gc_incremental_traversal_threshold = GC_INCREMENTAL_TRAVERSAL_THRESHOLD;
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2434 #endif /* NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2435 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2436
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2437 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2438 init_gc_early (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2439 {
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2440 #ifdef NEW_GC
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2441 /* Reset the finalizers_to_run list after pdump_load. */
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2442 Vfinalizers_to_run = Qnil;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2443 #endif /* NEW_GC */
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2444 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2445
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2446 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2447 reinit_gc_early (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2448 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2449 common_init_gc_early ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2450 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2451
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2452 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2453 init_gc_once_early (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2454 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2455 common_init_gc_early ();
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2456 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2457
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2458 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2459 syms_of_gc (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2460 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2461 DEFSYMBOL (Qpre_gc_hook);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2462 DEFSYMBOL (Qpost_gc_hook);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2463 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2464 DEFSUBR (Fgc_full);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2465 DEFSUBR (Fgc_incremental);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2466 #ifdef ERROR_CHECK_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2467 DEFSUBR (Fgc_stats);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2468 #endif /* not ERROR_CHECK_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2469 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2470 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2471
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2472 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2473 vars_of_gc (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2474 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2475 staticpro_nodump (&pre_gc_cursor);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2476
4952 19a72041c5ed Mule-izing, various fixes related to char * arguments Ben Wing <ben@xemacs.org> parents: 4934 diff changeset	2477 QSin_garbage_collection = build_defer_string ("(in garbage collection)");
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2478 staticpro (&QSin_garbage_collection);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2479
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2480 DEFVAR_INT ("gc-cons-threshold", &gc_cons_threshold /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2481 *Number of bytes of consing between full garbage collections.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2482 \"Consing\" is a misnomer in that this actually counts allocation
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2483 of all different kinds of objects, not just conses.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2484 Garbage collection can happen automatically once this many bytes have been
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2485 allocated since the last garbage collection. All data types count.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2486
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2487 Garbage collection happens automatically when `eval' or `funcall' are
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2488 called. (Note that `funcall' is called implicitly as part of evaluation.)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2489 By binding this temporarily to a large number, you can effectively
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2490 prevent garbage collection during a part of the program.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2491
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2492 Normally, you cannot set this value less than 10,000 (if you do, it is
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2493 automatically reset during the next garbage collection). However, if
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2494 XEmacs was compiled with DEBUG_XEMACS, this does not happen, allowing
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2495 you to set this value very low to track down problems with insufficient
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2496 GCPRO'ing. If you set this to a negative number, garbage collection will
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2497 happen at EVERY call to `eval' or `funcall'. This is an extremely
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2498 effective way to check GCPRO problems, but be warned that your XEmacs
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2499 will be unusable! You almost certainly won't have the patience to wait
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2500 long enough to be able to set it back.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2501
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2502 See also `consing-since-gc' and `gc-cons-percentage'.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2503 */ );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2504
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2505 DEFVAR_INT ("gc-cons-percentage", &gc_cons_percentage /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2506 *Percentage of memory allocated between garbage collections.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2507
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2508 Garbage collection will happen if this percentage of the total amount of
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2509 memory used for data (see `lisp-object-memory-usage') has been allocated
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2510 since the last garbage collection. However, it will not happen if less
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2511 than `gc-cons-threshold' bytes have been allocated -- this sets an absolute
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2512 minimum in case very little data has been allocated or the percentage is
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2513 set very low. Set this to 0 to have garbage collection always happen after
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2514 `gc-cons-threshold' bytes have been allocated, regardless of current memory
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2515 usage.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2516
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2517 See also `consing-since-gc' and `gc-cons-threshold'.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2518 */ );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2519
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2520 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2521 DEFVAR_INT ("gc-cons-incremental-threshold",
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2522 &gc_cons_incremental_threshold /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2523 *Number of bytes of consing between cycles of incremental garbage
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2524 collections. \"Consing\" is a misnomer in that this actually counts
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2525 allocation of all different kinds of objects, not just conses. The
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2526 next garbage collection cycle can happen automatically once this many
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2527 bytes have been allocated since the last garbage collection cycle.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2528 All data types count.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2529
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2530 See also `gc-cons-threshold'.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2531 */ );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2532
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2533 DEFVAR_INT ("gc-incremental-traversal-threshold",
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2534 &gc_incremental_traversal_threshold /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2535 *Number of elements processed in one cycle of incremental travesal.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2536 */ );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2537 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2538
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2539 DEFVAR_BOOL ("purify-flag", &purify_flag /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2540 Non-nil means loading Lisp code in order to dump an executable.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2541 This means that certain objects should be allocated in readonly space.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2542 */ );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2543
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2544 DEFVAR_BOOL ("garbage-collection-messages", &garbage_collection_messages /*
4502 8748a3f7ceb4 Handle varalias chains, custom variables in #'user-variable-p. Aidan Kehoe <kehoea@parhasard.net> parents: 4124 diff changeset	2545 *Non-nil means display messages at start and end of garbage collection.
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2546 */ );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2547 garbage_collection_messages = 0;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2548
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2549 DEFVAR_LISP ("pre-gc-hook", &Vpre_gc_hook /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2550 Function or functions to be run just before each garbage collection.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2551 Interrupts, garbage collection, and errors are inhibited while this hook
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2552 runs, so be extremely careful in what you add here. In particular, avoid
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2553 consing, and do not interact with the user.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2554 */ );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2555 Vpre_gc_hook = Qnil;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2556
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2557 DEFVAR_LISP ("post-gc-hook", &Vpost_gc_hook /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2558 Function or functions to be run just after each garbage collection.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2559 Interrupts, garbage collection, and errors are inhibited while this hook
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2560 runs. Each hook is called with one argument which is an alist with
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2561 finalization data.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2562 */ );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2563 Vpost_gc_hook = Qnil;
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2564
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2565 DEFVAR_LISP ("gc-message", &Vgc_message /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2566 String to print to indicate that a garbage collection is in progress.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2567 This is printed in the echo area. If the selected frame is on a
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2568 window system and `gc-pointer-glyph' specifies a value (i.e. a pointer
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2569 image instance) in the domain of the selected frame, the mouse pointer
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2570 will change instead of this message being printed.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2571 */ );
4952 19a72041c5ed Mule-izing, various fixes related to char * arguments Ben Wing <ben@xemacs.org> parents: 4934 diff changeset	2572 Vgc_message = build_defer_string (gc_default_message);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2573
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2574 DEFVAR_LISP ("gc-pointer-glyph", &Vgc_pointer_glyph /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2575 Pointer glyph used to indicate that a garbage collection is in progress.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2576 If the selected window is on a window system and this glyph specifies a
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2577 value (i.e. a pointer image instance) in the domain of the selected
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2578 window, the pointer will be changed as specified during garbage collection.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2579 Otherwise, a message will be printed in the echo area, as controlled
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2580 by `gc-message'.
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2581 */ );
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2582
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2583 #ifdef NEW_GC
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2584 DEFVAR_BOOL ("allow-incremental-gc", &allow_incremental_gc /*
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2585 *Non-nil means to allow incremental garbage collection. Nil prevents
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2586 *incremental garbage collection, the garbage collector then only does
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2587 *full collects (even if (gc-incremental) is called).
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2588 */ );
3263 d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2589
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2590 Vfinalizers_to_run = Qnil;
d674024a8674 [xemacs-hg @ 2006-02-27 16:29:00 by crestani] crestani parents: 3092 diff changeset	2591 staticpro_nodump (&Vfinalizers_to_run);
3092 141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2592 #endif /* NEW_GC */
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2593 }
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2594
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2595 void
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2596 complex_vars_of_gc (void)
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2597 {
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2598 Vgc_pointer_glyph = Fmake_glyph_internal (Qpointer);
141c2920ea48 [xemacs-hg @ 2005-11-25 01:41:31 by crestani] crestani parents: diff changeset	2599 }

Mercurial > hg > xemacs-beta

annotate src/gc.c @ 5334:b249c479f9e1