1// Copyright 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CONTENT_CHILD_WORKER_THREAD_TASK_RUNNER_H_
6#define CONTENT_CHILD_WORKER_THREAD_TASK_RUNNER_H_
7
8#include "base/task_runner.h"
9
10namespace content {
11
12// A task runner that runs tasks on a single webkit worker thread which
13// is managed by WorkerTaskRunner.
14// Note that this implementation ignores the delay duration for PostDelayedTask
15// and have it behave the same as PostTask.
16class WorkerThreadTaskRunner : public base::TaskRunner {
17 public:
18  explicit WorkerThreadTaskRunner(int worker_thread_id);
19
20  // Gets the WorkerThreadTaskRunner for the current worker thread.
21  // This returns non-null value only when it is called on a worker thread.
22  static scoped_refptr<WorkerThreadTaskRunner> current();
23
24  // TaskRunner overrides.
25  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
26                               const base::Closure& task,
27                               base::TimeDelta delay) OVERRIDE;
28  virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
29
30 protected:
31  virtual ~WorkerThreadTaskRunner();
32
33 private:
34  const int worker_thread_id_;
35};
36
37}  // namespace content
38
39#endif  // CONTENT_CHILD_WORKER_THREAD_TASK_RUNNER_H_
40