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 9 #include "base/basictypes.h" 10 ExitSignalHandler(int sig)11static void ExitSignalHandler(int sig) { 12 // A call to exit() can call atexit() handlers. If we SIGSEGV due 13 // to a corrupt heap, and if we have an atexit handler that 14 // allocates or frees memory, we are in trouble if we do not _exit. 15 _exit(128 + sig); 16 } 17 18 // static DisableOSCrashDumps()19void DebugUtil::DisableOSCrashDumps() { 20 // These are the POSIX signals corresponding to the Mach exceptions that 21 // Apple Crash Reporter handles. See ux_exception() in xnu's 22 // bsd/uxkern/ux_exception.c and machine_exception() in xnu's 23 // bsd/dev/*/unix_signal.c. 24 const int signals_to_intercept[] = { 25 SIGILL, // EXC_BAD_INSTRUCTION 26 SIGTRAP, // EXC_BREAKPOINT 27 SIGFPE, // EXC_ARITHMETIC 28 SIGBUS, // EXC_BAD_ACCESS 29 SIGSEGV // EXC_BAD_ACCESS 30 }; 31 32 // For all these signals, just wire things up so we exit immediately. 33 for (size_t i = 0; i < arraysize(signals_to_intercept); ++i) { 34 signal(signals_to_intercept[i], ExitSignalHandler); 35 } 36 } 37