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| 1 // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/debug_util.h" | |
| 6 | |
| 7 #include <signal.h> | |
| 8 #include <unistd.h> | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 | |
| 12 static void ExitSignalHandler(int sig) { | |
| 13 // A call to exit() can call atexit() handlers. If we SIGSEGV due | |
| 14 // to a corrupt heap, and if we have an atexit handler that | |
| 15 // allocates or frees memory, we are in trouble if we do not _exit. | |
| 16 _exit(128 + sig); | |
| 17 } | |
| 18 | |
| 19 // static | |
| 20 void DebugUtil::DisableOSCrashDumps() { | |
| 21 // These are the POSIX signals corresponding to the Mach exceptions that | |
| 22 // Apple Crash Reporter handles. See ux_exception() in xnu's | |
| 23 // bsd/uxkern/ux_exception.c and machine_exception() in xnu's | |
| 24 // bsd/dev/*/unix_signal.c. | |
| 25 const int signals_to_intercept[] = { | |
| 26 SIGILL, // EXC_BAD_INSTRUCTION | |
| 27 SIGTRAP, // EXC_BREAKPOINT | |
| 28 SIGFPE, // EXC_ARITHMETIC | |
| 29 SIGBUS, // EXC_BAD_ACCESS | |
| 30 SIGSEGV // EXC_BAD_ACCESS | |
| 31 }; | |
| 32 | |
| 33 // For all these signals, just wire things up so we exit immediately. | |
| 34 for (size_t i = 0; i < arraysize(signals_to_intercept); ++i) { | |
| 35 signal(signals_to_intercept[i], ExitSignalHandler); | |
| 36 } | |
| 37 } | |
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