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63efcc2686
facb5e2Update Emacs manual section related to character folding4efea8e; * etc/DEBUG: Fix a typo. (Bug#22984)f8df21bUpdate admin/notes/unicode950be68Add symref-filepattern entries for c?perl-mode8b8a6adDon't use XRANDR 1.3 extensions if the server doesn't support them.985dacf; NEWS update for the last change in etags741a6f8Sync with gnulib7352c6cRework C source files to avoid ^(a589e9aBy default, etags produces unqualified Perl tag names72c7438Indent methods with keyword names correctly28532a9Propertize character literals and special global variables differentlya7d6f39; Fix last change in NEWS83b2a20Change how /etc/NEWS presents character foldingb417c5aRevert "Revert "Backport: * lisp/isearch.el: Turn char-folding off by default""711ca36Properly handle lambda as read function (bug 22961)1b9d616Propertize operator symbol names with symbol syntax class9b16bc2Stop recognizing :#{} as symbol in ruby-mode366ec77Allow using the left shift operator without spaces on both sides02bf7ccProperly handle unquoting in wdired (bug 22938)16cf469; Spelling fix and tighten up commentf50bc04Allow splat operator before percent literal991c801Don't apply the return value of goto-char as syntax class6e63b3eGuard against nested percent literals066f3bcRecognize iuwu-mod after an escaped newline6f7a57cFix symbolic mode string conversion for s and t50b9826Update 'ucs-names' database993b2fbImprove doc string of 'shell-command'b71c717Make the code in movemail_strftime more generalcc057e4Speed up redisplay of binary files with long series of nullse51b27eRemove the highlighting support for quoting 'like this' inside Lisp docstringsb1abce1Restore leading space in movemail pop output98b8d44Fix bidi-paragraph-direction in Rmail view bufferdc9d837Don't misindent computed property generator methods7923112Fix mbox files produced by movemail on MS-Windowsc45a1cadoc string file descriptor exhaustion fix265141bFix Bug#22814
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/* simulate `sbrk' with an array in .bss, for `unexec' support for Cygwin;
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complete rewrite of xemacs Cygwin `unexec' code
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Copyright (C) 2004-2016 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at
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your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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#include "sheap.h"
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#include <stdio.h>
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#include "lisp.h"
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#include <unistd.h>
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#include <stdlib.h> /* for exit */
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static int debug_sheap;
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char bss_sbrk_buffer[STATIC_HEAP_SIZE];
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char *max_bss_sbrk_ptr;
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bool bss_sbrk_did_unexec;
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void *
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bss_sbrk (ptrdiff_t request_size)
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{
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static char *bss_sbrk_ptr;
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if (!bss_sbrk_ptr)
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{
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max_bss_sbrk_ptr = bss_sbrk_ptr = bss_sbrk_buffer;
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#ifdef CYGWIN
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/* Force space for fork to work. */
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sbrk (4096);
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#endif
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}
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int used = bss_sbrk_ptr - bss_sbrk_buffer;
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if (request_size < -used)
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{
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printf (("attempt to free too much: "
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"avail %d used %d failed request %"pD"d\n"),
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STATIC_HEAP_SIZE, used, request_size);
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exit (-1);
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return 0;
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}
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else if (STATIC_HEAP_SIZE - used < request_size)
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{
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printf ("static heap exhausted: avail %d used %d failed request %"pD"d\n",
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STATIC_HEAP_SIZE, used, request_size);
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exit (-1);
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return 0;
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}
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void *ret = bss_sbrk_ptr;
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bss_sbrk_ptr += request_size;
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if (max_bss_sbrk_ptr < bss_sbrk_ptr)
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max_bss_sbrk_ptr = bss_sbrk_ptr;
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if (debug_sheap)
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{
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if (request_size < 0)
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printf ("freed size %"pD"d\n", request_size);
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else
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printf ("allocated %p size %"pD"d\n", ret, request_size);
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}
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return ret;
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}
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