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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include <dirent.h> | 5 #include <dirent.h> |
6 #include <errno.h> | 6 #include <errno.h> |
7 #include <fcntl.h> | 7 #include <fcntl.h> |
8 #include <signal.h> | 8 #include <signal.h> |
9 #include <stdlib.h> | 9 #include <stdlib.h> |
10 #include <sys/resource.h> | 10 #include <sys/resource.h> |
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134 | 134 |
135 return status; | 135 return status; |
136 } | 136 } |
137 | 137 |
138 // Android has built-in crash handling. | 138 // Android has built-in crash handling. |
139 #if !defined(OS_ANDROID) | 139 #if !defined(OS_ANDROID) |
140 void StackDumpSignalHandler(int signal, siginfo_t* info, ucontext_t* context) { | 140 void StackDumpSignalHandler(int signal, siginfo_t* info, ucontext_t* context) { |
141 if (debug::BeingDebugged()) | 141 if (debug::BeingDebugged()) |
142 debug::BreakDebugger(); | 142 debug::BreakDebugger(); |
143 | 143 |
144 DLOG(ERROR) << "Received signal " << signal; | |
145 debug::StackTrace().PrintBacktrace(); | |
146 | |
147 // TODO(shess): Port to Linux. | |
148 #if defined(OS_MACOSX) | |
149 // TODO(shess): Port to 64-bit. | |
150 #if ARCH_CPU_32_BITS | |
151 char buf[1024]; | 144 char buf[1024]; |
152 size_t len; | 145 size_t len; |
153 | 146 |
154 // NOTE: Even |snprintf()| is not on the approved list for signal | 147 // NOTE: Even |snprintf()| is not on the approved list for signal |
155 // handlers, but buffered I/O is definitely not on the list due to | 148 // handlers, but buffered I/O is definitely not on the list due to |
156 // potential for |malloc()|. | 149 // potential for |malloc()|. |
150 len = static_cast<size_t>( | |
151 snprintf(buf, sizeof(buf), "Received signal %d\n", signal)); | |
152 ignore_result(write(STDERR_FILENO, buf, std::min(len, sizeof(buf) - 1))); | |
153 | |
154 // TODO(phajdan.jr): Re-enable backtrace printing after fixing the hang. | |
155 // debug::StackTrace().PrintBacktrace(); | |
156 | |
157 // TODO(shess): Port to Linux. | |
158 #if defined(OS_MACOSX) | |
Scott Hess - ex-Googler
2012/10/30 23:47:59
I would prefer to have the PrintBacktrace() enable
| |
159 // TODO(shess): Port to 64-bit. | |
160 #if ARCH_CPU_32_BITS | |
161 // NOTE: Even |snprintf()| is not on the approved list for signal | |
162 // handlers, but buffered I/O is definitely not on the list due to | |
163 // potential for |malloc()|. | |
157 len = static_cast<size_t>( | 164 len = static_cast<size_t>( |
158 snprintf(buf, sizeof(buf), | 165 snprintf(buf, sizeof(buf), |
159 "ax: %x, bx: %x, cx: %x, dx: %x\n", | 166 "ax: %x, bx: %x, cx: %x, dx: %x\n", |
160 context->uc_mcontext->__ss.__eax, | 167 context->uc_mcontext->__ss.__eax, |
161 context->uc_mcontext->__ss.__ebx, | 168 context->uc_mcontext->__ss.__ebx, |
162 context->uc_mcontext->__ss.__ecx, | 169 context->uc_mcontext->__ss.__ecx, |
163 context->uc_mcontext->__ss.__edx)); | 170 context->uc_mcontext->__ss.__edx)); |
164 write(STDERR_FILENO, buf, std::min(len, sizeof(buf) - 1)); | 171 write(STDERR_FILENO, buf, std::min(len, sizeof(buf) - 1)); |
165 | 172 |
166 len = static_cast<size_t>( | 173 len = static_cast<size_t>( |
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1338 if (IsChildDead(process)) | 1345 if (IsChildDead(process)) |
1339 return; | 1346 return; |
1340 | 1347 |
1341 BackgroundReaper* reaper = new BackgroundReaper(process, 0); | 1348 BackgroundReaper* reaper = new BackgroundReaper(process, 0); |
1342 PlatformThread::CreateNonJoinable(0, reaper); | 1349 PlatformThread::CreateNonJoinable(0, reaper); |
1343 } | 1350 } |
1344 | 1351 |
1345 #endif // !defined(OS_MACOSX) | 1352 #endif // !defined(OS_MACOSX) |
1346 | 1353 |
1347 } // namespace base | 1354 } // namespace base |
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