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// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef V8_LIBPLATFORM_TASK_QUEUE_H_
#define V8_LIBPLATFORM_TASK_QUEUE_H_
#include <queue>
// TODO(jochen): We should have our own version of globals.h.
#include "../globals.h"
#include "../platform/mutex.h"
#include "../platform/semaphore.h"
namespace v8 {
class Task;
namespace internal {
class TaskQueue {
public:
TaskQueue();
~TaskQueue();
// Appends a task to the queue. The queue takes ownership of |task|.
void Append(Task* task);
// Returns the next task to process. Blocks if no task is available. Returns
// NULL if the queue is terminated.
Task* GetNext();
// Terminate the queue.
void Terminate();
private:
Mutex lock_;
Semaphore process_queue_semaphore_;
std::queue<Task*> task_queue_;
bool terminated_;
DISALLOW_COPY_AND_ASSIGN(TaskQueue);
};
} } // namespace v8::internal
#endif // V8_LIBPLATFORM_TASK_QUEUE_H_
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