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// Copyright 2014 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 MEDIA_CAST_TEST_SKEWED_TASK_RUNNER_H_
#define MEDIA_CAST_TEST_SKEWED_TASK_RUNNER_H_
#include <map>
#include "base/basictypes.h"
#include "base/single_thread_task_runner.h"
#include "base/test/simple_test_tick_clock.h"
#include "base/test/test_pending_task.h"
namespace media {
namespace cast {
namespace test {
// This class wraps a SingleThreadTaskRunner, and allows you to scale
// the delay for any posted task by a factor. The factor is changed by
// calling SetSkew(). A skew of 2.0 means that all delayed task will
// have to wait twice as long.
class SkewedSingleThreadTaskRunner : public base::SingleThreadTaskRunner {
public:
explicit SkewedSingleThreadTaskRunner(
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
// Set the delay multiplier to |skew|.
void SetSkew(double skew);
// base::SingleThreadTaskRunner implementation.
virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
const base::Closure& task,
base::TimeDelta delay) override;
virtual bool RunsTasksOnCurrentThread() const override;
// This function is currently not used, and will return false.
virtual bool PostNonNestableDelayedTask(
const tracked_objects::Location& from_here,
const base::Closure& task,
base::TimeDelta delay) override;
protected:
virtual ~SkewedSingleThreadTaskRunner();
private:
double skew_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
DISALLOW_COPY_AND_ASSIGN(SkewedSingleThreadTaskRunner);
};
} // namespace test
} // namespace cast
} // namespace media
#endif // MEDIA_CAST_TEST_SKEWED_TASK_RUNNER_H_
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