johnmccutchan@google.com
86c55f4fde
List is only updated when isolates are created / destroyed. ThreadInterrupter now walks list of isolates. Scheduling an isolate for interrupts is now lockless. Setting a current isolate is now lockless. Working on Linux, Mac, and Windows. Assert that the isolate isn't on two threads at once. R=asiva@google.com Review URL: https://codereview.chromium.org//128653004 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@32439 260f80e4-7a28-3924-810f-c04153c831b5
51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/globals.h"
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#if defined(TARGET_OS_ANDROID)
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#include "vm/signal_handler.h"
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#include "vm/thread_interrupter.h"
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namespace dart {
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DECLARE_FLAG(bool, thread_interrupter);
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DECLARE_FLAG(bool, trace_thread_interrupter);
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class ThreadInterrupterAndroid : public AllStatic {
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public:
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static void ThreadInterruptSignalHandler(int signal, siginfo_t* info,
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void* context_) {
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if (signal != SIGPROF) {
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return;
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}
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InterruptableThreadState* state = ThreadInterrupter::CurrentThreadState();
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if ((state == NULL) || (state->callback == NULL)) {
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// No interrupter state or callback.
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return;
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}
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ASSERT(Thread::Compare(state->id, Thread::GetCurrentThreadId()));
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}
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};
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void ThreadInterrupter::InterruptThread(InterruptableThreadState* state) {
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if (FLAG_trace_thread_interrupter) {
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OS::Print("ThreadInterrupter interrupting %p\n",
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reinterpret_cast<void*>(state->id));
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}
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pthread_kill(state->id, SIGPROF);
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}
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void ThreadInterrupter::InstallSignalHandler() {
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SignalHandler::Install(
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ThreadInterrupterAndroid::ThreadInterruptSignalHandler);
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}
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} // namespace dart
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#endif // defined(TARGET_OS_ANDROID)
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