86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
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// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "marking-thread.h"
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#include "v8.h"
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#include "isolate.h"
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#include "v8threads.h"
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namespace v8 {
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namespace internal {
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MarkingThread::MarkingThread(Isolate* isolate)
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: Thread("MarkingThread"),
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isolate_(isolate),
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heap_(isolate->heap()),
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start_marking_semaphore_(OS::CreateSemaphore(0)),
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end_marking_semaphore_(OS::CreateSemaphore(0)),
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stop_semaphore_(OS::CreateSemaphore(0)) {
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NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(false));
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id_ = NoBarrier_AtomicIncrement(&id_counter_, 1);
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}
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Atomic32 MarkingThread::id_counter_ = -1;
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void MarkingThread::Run() {
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Isolate::SetIsolateThreadLocals(isolate_, NULL);
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while (true) {
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start_marking_semaphore_->Wait();
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if (Acquire_Load(&stop_thread_)) {
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stop_semaphore_->Signal();
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return;
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}
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end_marking_semaphore_->Signal();
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}
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}
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void MarkingThread::Stop() {
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Release_Store(&stop_thread_, static_cast<AtomicWord>(true));
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start_marking_semaphore_->Signal();
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stop_semaphore_->Wait();
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}
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void MarkingThread::StartMarking() {
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start_marking_semaphore_->Signal();
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}
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void MarkingThread::WaitForMarkingThread() {
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end_marking_semaphore_->Wait();
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}
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} } // namespace v8::internal
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