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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include "platform/globals.h" | 5 #include "platform/globals.h" |
| 6 #if defined(TARGET_OS_LINUX) | 6 #if defined(TARGET_OS_LINUX) |
| 7 | 7 |
| 8 #include "vm/flags.h" | 8 #include "vm/flags.h" |
| 9 #include "vm/os.h" | 9 #include "vm/os.h" |
| 10 #include "vm/signal_handler.h" | 10 #include "vm/signal_handler.h" |
| 11 #include "vm/thread_interrupter.h" | 11 #include "vm/thread_interrupter.h" |
| 12 | 12 |
| 13 namespace dart { | 13 namespace dart { |
| 14 | 14 |
| 15 DECLARE_FLAG(bool, thread_interrupter); | 15 DECLARE_FLAG(bool, thread_interrupter); |
| 16 DECLARE_FLAG(bool, trace_thread_interrupter); | 16 DECLARE_FLAG(bool, trace_thread_interrupter); |
| 17 | 17 |
| 18 class ThreadInterrupterLinux : public AllStatic { | 18 class ThreadInterrupterLinux : public AllStatic { |
| 19 public: | 19 public: |
| 20 static void ThreadInterruptSignalHandler(int signal, siginfo_t* info, | 20 static void ThreadInterruptSignalHandler(int signal, siginfo_t* info, |
| 21 void* context_) { | 21 void* context_) { |
| 22 if (signal != SIGPROF) { | 22 if (signal != SIGPROF) { |
| 23 return; | 23 return; |
| 24 } | 24 } |
| 25 InterruptableThreadState* state = ThreadInterrupter::CurrentThreadState(); | 25 InterruptableThreadState* state = ThreadInterrupter::CurrentThreadState(); |
| 26 if ((state == NULL) || (state->callback == NULL)) { | 26 if ((state == NULL) || (state->callback == NULL)) { |
| 27 // No interrupter state or callback. | 27 // No interrupter state or callback. |
| 28 return; | 28 return; |
| 29 } | 29 } |
| 30 ASSERT(Thread::Compare(state->id, Thread::GetCurrentThreadId())); | 30 ASSERT(OSThread::Compare(state->id, OSThread::GetCurrentThreadId())); |
| 31 // Extract thread state. | 31 // Extract thread state. |
| 32 ucontext_t* context = reinterpret_cast<ucontext_t*>(context_); | 32 ucontext_t* context = reinterpret_cast<ucontext_t*>(context_); |
| 33 mcontext_t mcontext = context->uc_mcontext; | 33 mcontext_t mcontext = context->uc_mcontext; |
| 34 InterruptedThreadState its; | 34 InterruptedThreadState its; |
| 35 its.tid = state->id; | 35 its.tid = state->id; |
| 36 its.pc = SignalHandler::GetProgramCounter(mcontext); | 36 its.pc = SignalHandler::GetProgramCounter(mcontext); |
| 37 its.fp = SignalHandler::GetFramePointer(mcontext); | 37 its.fp = SignalHandler::GetFramePointer(mcontext); |
| 38 its.csp = SignalHandler::GetCStackPointer(mcontext); | 38 its.csp = SignalHandler::GetCStackPointer(mcontext); |
| 39 its.dsp = SignalHandler::GetDartStackPointer(mcontext); | 39 its.dsp = SignalHandler::GetDartStackPointer(mcontext); |
| 40 state->callback(its, state->data); | 40 state->callback(its, state->data); |
| (...skipping 10 matching lines...) Expand all Loading... |
| 51 } | 51 } |
| 52 | 52 |
| 53 | 53 |
| 54 void ThreadInterrupter::InstallSignalHandler() { | 54 void ThreadInterrupter::InstallSignalHandler() { |
| 55 SignalHandler::Install(ThreadInterrupterLinux::ThreadInterruptSignalHandler); | 55 SignalHandler::Install(ThreadInterrupterLinux::ThreadInterruptSignalHandler); |
| 56 } | 56 } |
| 57 | 57 |
| 58 } // namespace dart | 58 } // namespace dart |
| 59 | 59 |
| 60 #endif // defined(TARGET_OS_LINUX) | 60 #endif // defined(TARGET_OS_LINUX) |
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