Mercurial > hg > xemacs-beta
view src/vdb-posix.c @ 4792:95b04754ea8c
Make #'equalp more compatible with CL; add a compiler macro, test & doc it.
lisp/ChangeLog addition:
2009-11-08 Aidan Kehoe <kehoea@parhasard.net>
* cl-extra.el (cl-string-vector-equalp)
(cl-bit-vector-vector-equalp, cl-vector-array-equalp)
(cl-hash-table-contents-equalp): New functions, to implement
equalp treating arrays with identical contents as equivalent, as
specified by Common Lisp.
(equalp): Revise this function to implement array equivalence,
and the hash-table equalp behaviour specified by CL.
* cl-macs.el (equalp): Add a compiler macro for this function,
used when one of the arguments is constant, and as such, its type
is known at compile time.
man/ChangeLog addition:
2009-11-08 Aidan Kehoe <kehoea@parhasard.net>
* lispref/objects.texi (Equality Predicates):
Document #'equalp here, as well as #'equal and #'eq.
tests/ChangeLog addition:
2009-12-31 Aidan Kehoe <kehoea@parhasard.net>
* automated/lisp-tests.el:
Test much of the functionality of equalp; add a pointer to Paul
Dietz' ANSI test suite for this function, converted to Emacs
Lisp. Not including the tests themselves in XEmacs because who
owns the copyright on the files is unclear and the GCL people
didn't respond to my queries.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Thu, 31 Dec 2009 15:09:41 +0000 (2009-12-31) |
parents | 896a34d28b71 |
children | ed624ab64583 |
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/* Virtual diry bit implementation for XEmacs. Copyright (C) 2005 Marcus Crestani. This file is part of XEmacs. XEmacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Synched up with: Not in FSF. */ #include <config.h> #include "lisp.h" #include "gc.h" #include "mc-alloc.h" #include "vdb.h" #include <errno.h> #include <signal.h> #include <sys/mman.h> #if defined (HAVE_SIGACTION) # if defined (HAVE_STRUCT_SIGINFO_SI_ADDR) # define FAULT_HANDLER_ARGUMENTS \ int signum, struct siginfo *siginfo, void *UNUSED (ctx) # define GET_FAULT_ADDRESS siginfo->si_addr # elif defined (HAVE_SIGINFO_T_SI_ADDR) # define FAULT_HANDLER_ARGUMENTS \ int signum, siginfo_t *siginfo, void *UNUSED (ctx) # define GET_FAULT_ADDRESS siginfo->si_addr # endif # define USE_SIGACTION # define FAULT_HANDLER_REMOVE_HANDLER #elif defined (HAVE_SIGNAL) # define FAULT_HANDLER_ARGUMENTS int signum, struct sigcontext sc # define GET_FAULT_ADDRESS (void *) sc.cr2 # define USE_SIGNAL #endif #ifdef USE_SIGACTION struct sigaction act, segv_oact, bus_oact; #endif /* USE_SIGACTION */ #ifdef USE_SIGNAL sighandler_t segv_oact, bus_oact; #endif /* USE_SIGNAL */ void vdb_remove_signal_handler (void); void vdb_fault_handler (FAULT_HANDLER_ARGUMENTS) { if (write_barrier_enabled && (fault_on_protected_page (GET_FAULT_ADDRESS))) { vdb_designate_modified (GET_FAULT_ADDRESS); unprotect_page_and_mark_dirty (GET_FAULT_ADDRESS); #ifdef FAULT_HANDLER_REINSTALL_HANDLER vdb_install_signal_handler (); #endif /* FAULT_HANDLER_REINSTALL_HANDLER */ } else /* default sigsegv handler */ { char *signal_name = ""; if (signum == SIGSEGV) signal_name = "SIGSEGV"; else if (signum == SIGBUS) signal_name = "SIGBUS"; else ABORT (); /* something weird happened: wrong signal caught */ fprintf (stderr, "\n\nFatal Error: Received %s (%d) for address %p\n", signal_name, signum, (void *) GET_FAULT_ADDRESS); #ifdef FAULT_HANDLER_CALL_PREVIOUS_HANDLER if (signum == SIGSEGV) segv_oact (signum); else if (signum == SIGBUS) bus_oact (signum); #endif /* FAULT_HANDLER_CALL_PREVIOUS_HANDLER */ #ifdef FAULT_HANDLER_REMOVE_HANDLER vdb_remove_signal_handler (); #endif /* FAULT_HANDLER_REMOVE_HANDLER */ } } void vdb_remove_signal_handler (void) { #ifdef USE_SIGACTION sigaction(SIGSEGV, &segv_oact, 0); sigaction(SIGBUS, &bus_oact, 0); #endif /* USE_SIGACTION */ #ifdef USE_SIGNAL signal (SIGSEGV, segv_oact); signal (SIGBUS, bus_oact); #endif } void vdb_install_signal_handler (void) { /* See init_signals_very_early () in signal.c. */ if (noninteractive && !initialized) { allow_incremental_gc = 0; return; } #ifdef USE_SIGACTION memset(&act, 0, sizeof(struct sigaction)); act.sa_sigaction = vdb_fault_handler; sigemptyset (&act.sa_mask); act.sa_flags = SA_SIGINFO; sigaction (SIGSEGV, &act, &segv_oact); sigaction (SIGBUS, &act, &bus_oact); allow_incremental_gc = 1; #endif /* USE_SIGACTION */ #ifdef USE_SIGNAL segv_oact = signal (SIGSEGV, (void (*)(int)) vdb_fault_handler); bus_oact = signal (SIGBUS, (void (*)(int)) vdb_fault_handler); #endif /* USE_SIGNAL */ } void vdb_protect (void *ptr, EMACS_INT len) { if (mprotect (ptr, len, PROT_READ)) { perror ("Couldn't mprotect"); ABORT (); } } void vdb_unprotect (void *ptr, EMACS_INT len) { if (mprotect (ptr, len, PROT_READ | PROT_WRITE)) { perror ("Couldn't mprotect"); ABORT (); } }