Mercurial > hg > xemacs-beta
annotate src/vdb-win32.c @ 4888:c27efc9acb5a
merge
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Wed, 27 Jan 2010 00:37:59 -0600 |
| parents | 11daf37dae4d |
| children | f395ee7ad844 |
| rev | line source |
|---|---|
| 3092 | 1 /* Virtual diry bit implementation for XEmacs. |
| 2 Copyright (C) 2005 Marcus Crestani. | |
| 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 /* Synched up with: Not in FSF. */ | |
| 22 | |
| 23 #include <config.h> | |
| 24 #include "lisp.h" | |
| 25 #include "gc.h" | |
| 26 #include "mc-alloc.h" | |
| 27 #include "vdb.h" | |
| 28 | |
| 29 #include "syswindows.h" | |
| 30 | |
| 31 | |
|
4827
11daf37dae4d
more fixes to get a clean compile
Ben Wing <ben@xemacs.org>
parents:
3092
diff
changeset
|
32 LONG WINAPI |
| 3092 | 33 win32_fault_handler (LPEXCEPTION_POINTERS e) |
| 34 { | |
| 35 #define GET_FAULT_ADDRESS (void *) e->ExceptionRecord->ExceptionInformation[1] | |
| 36 if ((e->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION) | |
| 37 && (e->ExceptionRecord->ExceptionInformation[0] == 1) | |
| 38 && write_barrier_enabled | |
| 39 && (fault_on_protected_page (GET_FAULT_ADDRESS))) | |
| 40 { | |
| 41 vdb_designate_modified (GET_FAULT_ADDRESS); | |
| 42 unprotect_page_and_mark_dirty (GET_FAULT_ADDRESS); | |
| 43 return EXCEPTION_CONTINUE_EXECUTION; | |
| 44 } | |
| 45 else | |
| 46 return EXCEPTION_CONTINUE_SEARCH; | |
| 47 } | |
| 48 | |
|
4827
11daf37dae4d
more fixes to get a clean compile
Ben Wing <ben@xemacs.org>
parents:
3092
diff
changeset
|
49 typedef LONG (WINAPI *gcPVECTORED_EXCEPTION_HANDLER) (LPEXCEPTION_POINTERS e); |
| 3092 | 50 |
| 51 | |
| 52 void | |
| 53 vdb_install_signal_handler (void) | |
| 54 { | |
| 55 HMODULE hm; | |
| 56 PVOID (WINAPI *aveh) (ULONG, gcPVECTORED_EXCEPTION_HANDLER); | |
| 57 | |
| 58 /* See init_signals_very_early () in signal.c. */ | |
| 59 if (noninteractive && !initialized) | |
| 60 { | |
| 61 allow_incremental_gc = 0; | |
| 62 return; | |
| 63 } | |
| 64 | |
| 65 hm = qxeGetModuleHandle (XETEXT ("kernel32")); | |
| 66 if (hm) | |
| 67 aveh = (PVOID (WINAPI *) (ULONG, gcPVECTORED_EXCEPTION_HANDLER)) | |
| 68 GetProcAddress (hm, "AddVectoredExceptionHandler"); | |
| 69 else | |
| 70 { | |
| 71 fprintf (stderr, "\nFAILED TO LOAD LIBRARY\n"); | |
| 72 aveh = NULL; | |
| 73 } | |
| 74 if (aveh) | |
| 75 { | |
| 76 allow_incremental_gc = 1; | |
| 77 aveh (TRUE, win32_fault_handler); | |
| 78 } | |
| 79 else | |
| 80 { | |
| 81 fprintf (stderr, "\nFAILED TO INSTALL SIGNAL HANDLER\n"); | |
| 82 ABORT (); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 | |
| 87 void | |
| 88 vdb_protect (void *ptr, EMACS_INT len) | |
| 89 { | |
| 90 DWORD old; | |
| 91 VirtualProtect (ptr, len, PAGE_READONLY, &old); | |
| 92 } | |
| 93 | |
| 94 | |
| 95 void | |
| 96 vdb_unprotect (void *ptr, EMACS_INT len) | |
| 97 { | |
| 98 DWORD old; | |
| 99 VirtualProtect (ptr, len, PAGE_READWRITE, &old); | |
| 100 } |