Mercurial > hg > xemacs-beta
annotate src/blocktype.c @ 5146:88bd4f3ef8e4
make lrecord UID's have a separate UID space for each object, resurrect debug SOE code in extents.c
-------------------- ChangeLog entries follow: --------------------
src/ChangeLog addition:
2010-03-15 Ben Wing <ben@xemacs.org>
* alloc.c:
* alloc.c (c_readonly):
* alloc.c (deadbeef_memory):
* alloc.c (make_compiled_function):
* alloc.c (make_button_data):
* alloc.c (make_motion_data):
* alloc.c (make_process_data):
* alloc.c (make_timeout_data):
* alloc.c (make_magic_data):
* alloc.c (make_magic_eval_data):
* alloc.c (make_eval_data):
* alloc.c (make_misc_user_data):
* alloc.c (noseeum_make_marker):
* alloc.c (ADDITIONAL_FREE_string):
* alloc.c (common_init_alloc_early):
* alloc.c (init_alloc_once_early):
* bytecode.c (print_compiled_function):
* bytecode.c (mark_compiled_function):
* casetab.c:
* casetab.c (print_case_table):
* console.c:
* console.c (print_console):
* database.c (print_database):
* database.c (finalize_database):
* device-msw.c (sync_printer_with_devmode):
* device-msw.c (print_devmode):
* device-msw.c (finalize_devmode):
* device.c:
* device.c (print_device):
* elhash.c:
* elhash.c (print_hash_table):
* eval.c (print_multiple_value):
* eval.c (mark_multiple_value):
* events.c (deinitialize_event):
* events.c (print_event):
* events.c (event_equal):
* extents.c:
* extents.c (soe_dump):
* extents.c (soe_insert):
* extents.c (soe_delete):
* extents.c (soe_move):
* extents.c (extent_fragment_update):
* extents.c (print_extent_1):
* extents.c (print_extent):
* extents.c (vars_of_extents):
* frame.c:
* frame.c (print_frame):
* free-hook.c:
* free-hook.c (check_free):
* glyphs.c:
* glyphs.c (print_image_instance):
* glyphs.c (print_glyph):
* gui.c:
* gui.c (copy_gui_item):
* hash.c:
* hash.c (NULL_ENTRY):
* hash.c (KEYS_DIFFER_P):
* keymap.c (print_keymap):
* keymap.c (MARKED_SLOT):
* lisp.h:
* lrecord.h:
* lrecord.h (LISP_OBJECT_UID):
* lrecord.h (set_lheader_implementation):
* lrecord.h (struct old_lcrecord_header):
* lstream.c (print_lstream):
* lstream.c (finalize_lstream):
* marker.c (print_marker):
* marker.c (marker_equal):
* mc-alloc.c (visit_all_used_page_headers):
* mule-charset.c:
* mule-charset.c (print_charset):
* objects.c (print_color_instance):
* objects.c (print_font_instance):
* objects.c (finalize_font_instance):
* opaque.c (print_opaque):
* opaque.c (print_opaque_ptr):
* opaque.c (equal_opaque_ptr):
* print.c (internal_object_printer):
* print.c (enum printing_badness):
* rangetab.c (print_range_table):
* rangetab.c (range_table_equal):
* specifier.c (print_specifier):
* specifier.c (finalize_specifier):
* symbols.c:
* symbols.c (print_symbol_value_magic):
* tooltalk.c:
* tooltalk.c (print_tooltalk_message):
* tooltalk.c (print_tooltalk_pattern):
* window.c (print_window):
* window.c (debug_print_window):
(1) Make lrecord UID's have a separate UID space for each object.
Otherwise, with 20-bit UID's, we rapidly wrap around, especially
when common objects like conses and strings increment the UID value
for every object created. (Originally I tried making two UID spaces,
one for objects that always print readably and hence don't display
the UID, and one for other objects. But certain objects like markers
for which a UID is displayed are still generated rapidly enough that
UID overflow is a serious issue.) This also has the advantage of
making UID values smaller, hence easier to remember -- their main
purpose is to make it easier to keep track of different objects of
the same type when debugging code. Make sure we dump lrecord UID's
so that we don't have problems with pdumped and non-dumped objects
having the same UID.
(2) Display UID's consistently whenever an object (a) doesn't
consistently print readably (objects like cons and string, which
always print readably, can't display a UID), and (b) doesn't
otherwise have a unique property that makes objects of a
particular type distinguishable. (E.g. buffers didn't and still
don't print an ID, but the buffer name uniquely identifies the
buffer.) Some types, such as event, extent, compiled-function,
didn't always (or didn't ever) display an ID; others (such as
marker, extent, lstream, opaque, opaque-ptr, any object using
internal_object_printer()) used to display the actual machine
pointer instead.
(3) Rename NORMAL_LISP_OBJECT_UID to LISP_OBJECT_UID; make it work
over all Lisp objects and take a Lisp object, not a struct pointer.
(4) Some misc cleanups in alloc.c, elhash.c.
(5) Change code in events.c that "deinitializes" an event so that
it doesn't increment the event UID counter in the process. Also
use deadbeef_memory() to overwrite memory instead of doing the same
with custom code. In the process, make deadbeef_memory() in
alloc.c always available, and delete extraneous copy in mc-alloc.c.
Also capitalize all uses of 0xDEADBEEF. Similarly in elhash.c
call deadbeef_memory().
(6) Resurrect "debug SOE" code in extents.c. Make it conditional
on DEBUG_XEMACS and on a `debug-soe' variable, rather than on
SOE_DEBUG. Make it output to stderr, not stdout.
(7) Delete some custom print methods that were identical to
external_object_printer().
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Mon, 15 Mar 2010 16:35:38 -0500 |
| parents | fdefd0186b75 |
| children | 308d34e9f07d |
| rev | line source |
|---|---|
| 428 | 1 /* Fixed-size block allocator. |
| 2 Copyright (C) 1994 Free Software Foundation, Inc. | |
| 3 | |
| 4 This file is part of XEmacs. | |
| 5 | |
| 6 XEmacs is free software; you can redistribute it and/or modify it | |
| 7 under the terms of the GNU General Public License as published by the | |
| 8 Free Software Foundation; either version 2, or (at your option) any | |
| 9 later version. | |
| 10 | |
| 11 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
| 17 along with XEmacs; see the file COPYING. If not, write to | |
| 18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 19 Boston, MA 02111-1307, USA. | |
| 20 */ | |
| 21 | |
| 22 /* Synched up with: Not in FSF. */ | |
| 23 | |
| 24 /* Authorship: | |
| 25 | |
| 26 Ben Wing: December 1994, for 19.12. | |
| 27 */ | |
| 28 | |
| 29 /* | |
| 30 | |
| 31 ------------------------------------------------------------------------------ | |
| 32 | |
| 33 A "block-type object" is used to efficiently allocate and free blocks | |
| 34 of a particular size. Freed blocks are remembered in a free list and | |
| 35 are reused as necessary to allocate new blocks, so as to avoid as | |
| 36 much as possible making calls to malloc() and free(). | |
| 37 | |
| 38 This is a container object. Declare a block-type object of a specific type | |
| 39 as follows: | |
| 40 | |
| 41 struct mytype_blocktype { | |
| 42 Blocktype_declare (mytype); | |
| 43 }; | |
| 44 | |
| 45 Use the following functions/macros: | |
| 46 | |
| 47 structype *Blocktype_new(structype) | |
| 48 [MACRO] Create a new block-type object of the specified type. | |
| 49 The argument to this call should be the type of object to be | |
| 50 created, e.g. foobar_blocktype. | |
| 51 type *Blocktype_alloc(b) | |
| 52 [MACRO] Allocate a block of the proper type for the specified | |
| 53 block-type object and return a pointer to it. | |
| 54 Blocktype_free(b, block) | |
| 55 Free a block of the type corresponding to the specified block-type | |
| 56 object. | |
| 57 Blocktype_delete(b) | |
| 58 Destroy a block-type object and the memory allocated to it. | |
| 59 | |
| 60 */ | |
| 61 | |
| 62 /* This file has been Mule-ized. */ | |
| 63 | |
| 64 #include <config.h> | |
| 65 #include "lisp.h" | |
| 66 | |
| 67 #include "blocktype.h" | |
| 68 | |
| 69 typedef struct blocktype | |
| 70 { | |
| 71 Blocktype_declare (void); | |
| 72 } Blocktype; | |
| 73 | |
| 74 struct block_internal | |
| 75 { | |
| 76 void *next; | |
| 77 }; | |
| 78 | |
| 79 void * | |
| 665 | 80 Blocktype_newf (Bytecount elsize) |
| 428 | 81 { |
| 82 Blocktype *b = xnew (Blocktype); | |
| 665 | 83 b->elsize = max (elsize, (Bytecount) sizeof (void *)); |
| 428 | 84 b->free = 0; |
| 85 return (void *) b; | |
| 86 } | |
| 87 | |
| 88 void | |
| 89 Blocktype_allocf (void *bbb) | |
| 90 { | |
| 91 Blocktype *b = (Blocktype *) bbb; | |
| 92 if (b->free) | |
| 93 { | |
| 94 b->tempel = b->free; | |
| 95 b->free = ((struct block_internal *) (b->free))->next; | |
| 96 } | |
| 97 else | |
| 98 b->tempel = (void *) xmalloc (b->elsize); | |
| 99 } | |
| 100 | |
| 101 void | |
| 102 Blocktype_free (void *bbb, void *el) | |
| 103 { | |
| 104 Blocktype *b = (Blocktype *) bbb; | |
| 105 ((struct block_internal *) el)->next = b->free; | |
| 106 b->free = el; | |
| 107 } |