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// Copyright (c) 2012 The Chromium 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 REMOTING_BASE_AUTO_THREAD_TASK_RUNNER_H_
#define REMOTING_BASE_AUTO_THREAD_TASK_RUNNER_H_
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop.h"
#include "base/single_thread_task_runner.h"
namespace remoting {
// A wrapper around |SingleThreadTaskRunner| that provides automatic lifetime
// management, by posting a caller-supplied task to the underlying task runner
// when no more references remain.
class AutoThreadTaskRunner : public base::SingleThreadTaskRunner {
public:
// Constructs an instance of |AutoThreadTaskRunner| wrapping |task_runner|.
// |stop_task| is posted to |task_runner| when the last reference to
// the AutoThreadTaskRunner is dropped.
AutoThreadTaskRunner(scoped_refptr<base::SingleThreadTaskRunner> task_runner,
const base::Closure& stop_task);
// SingleThreadTaskRunner implementation
virtual bool PostDelayedTask(
const tracked_objects::Location& from_here,
const base::Closure& task,
base::TimeDelta delay) OVERRIDE;
virtual bool PostNonNestableDelayedTask(
const tracked_objects::Location& from_here,
const base::Closure& task,
base::TimeDelta delay) OVERRIDE;
virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
private:
virtual ~AutoThreadTaskRunner();
// Task posted to |task_runner_| to notify the caller that it may be stopped.
base::Closure stop_task_;
// The wrapped task runner.
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
DISALLOW_COPY_AND_ASSIGN(AutoThreadTaskRunner);
};
} // namespace remoting
#endif // REMOTING_BASE_AUTO_THREAD_TASK_RUNNER_H_
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