| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "starboard/shared/signal/crash_signals.h" |
| |
| #include <signal.h> |
| |
| #include "starboard/configuration.h" |
| #include "starboard/log.h" |
| #include "starboard/shared/signal/signal_internal.h" |
| #include "starboard/system.h" |
| |
| namespace starboard { |
| namespace shared { |
| namespace signal { |
| |
| namespace { |
| |
| const int kCrashSignalsToTrap[] = { |
| SIGABRT, SIGFPE, SIGILL, SIGSEGV, |
| }; |
| |
| const int kStopSignalsToTrap[] = { |
| SIGTERM, SIGINT, |
| }; |
| |
| void SetSignalHandler(int signal_id, SignalHandlerFunction handler) { |
| struct sigaction action = {0}; |
| |
| action.sa_handler = handler; |
| action.sa_flags = 0; |
| ::sigemptyset(&action.sa_mask); |
| |
| ::sigaction(signal_id, &action, NULL); |
| } |
| |
| void DumpStackSignalSafe(int signal_id) { |
| LogSignalCaught(signal_id); |
| SbLogFlush(); |
| SbLogRawDumpStack(1); |
| |
| UninstallCrashSignalHandlers(); |
| SbSystemBreakIntoDebugger(); |
| } |
| |
| void Stop(int signal_id) { |
| LogSignalCaught(signal_id); |
| SbSystemRequestStop(0); |
| } |
| |
| } // namespace |
| |
| void InstallCrashSignalHandlers() { |
| for (int i = 0; i < SB_ARRAY_SIZE_INT(kCrashSignalsToTrap); ++i) { |
| SetSignalHandler(kCrashSignalsToTrap[i], &DumpStackSignalSafe); |
| } |
| for (int i = 0; i < SB_ARRAY_SIZE_INT(kStopSignalsToTrap); ++i) { |
| SetSignalHandler(kStopSignalsToTrap[i], &Stop); |
| } |
| } |
| |
| void UninstallCrashSignalHandlers() { |
| for (int i = 0; i < SB_ARRAY_SIZE_INT(kCrashSignalsToTrap); ++i) { |
| SetSignalHandler(kCrashSignalsToTrap[i], SIG_DFL); |
| } |
| for (int i = 0; i < SB_ARRAY_SIZE_INT(kStopSignalsToTrap); ++i) { |
| SetSignalHandler(kStopSignalsToTrap[i], SIG_DFL); |
| } |
| } |
| |
| } // namespace signal |
| } // namespace shared |
| } // namespace starboard |