sweeper-thread.h

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// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef V8_HEAP_SWEEPER_THREAD_H_
#define V8_HEAP_SWEEPER_THREAD_H_
 
#include "src/base/atomicops.h"
#include "src/base/platform/platform.h"
#include "src/flags.h"
#include "src/utils.h"
 
#include "src/heap/spaces.h"
 
#include "src/heap/heap.h"
 
namespace v8 {
namespace internal {
 
class SweeperThread : public base::Thread {
 public:
  explicit SweeperThread(Isolate* isolate);
  ~SweeperThread() {}
 
  void Run();
  void Stop();
  void StartSweeping();
  void WaitForSweeperThread();
  bool SweepingCompleted();
 
  static int NumberOfThreads(int max_available);
 
 private:
  Isolate* isolate_;
  Heap* heap_;
  MarkCompactCollector* collector_;
  base::Semaphore start_sweeping_semaphore_;
  base::Semaphore end_sweeping_semaphore_;
  base::Semaphore stop_semaphore_;
  volatile base::AtomicWord stop_thread_;
};
}
}  // namespace v8::internal
 
#endif  // V8_HEAP_SWEEPER_THREAD_H_