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// Copyright 2013 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 MOJO_SYSTEM_TEST_UTILS_H_
#define MOJO_SYSTEM_TEST_UTILS_H_
#include <stdint.h>
#include "base/callback_forward.h"
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/task_runner.h"
#include "base/threading/thread.h"
#include "base/time/time.h"
namespace tracked_objects {
class Location;
}
namespace mojo {
namespace system {
namespace test {
// Posts the given task (to the given task runner) and waits for it to complete.
// (Note: Doesn't spin the current thread's message loop, so if you're careless
// this could easily deadlock.)
void PostTaskAndWait(scoped_refptr<base::TaskRunner> task_runner,
const tracked_objects::Location& from_here,
const base::Closure& task);
// A timeout smaller than |TestTimeouts::tiny_timeout()|. Warning: This may lead
// to flakiness, but this is unavoidable if, e.g., you're trying to ensure that
// functions with timeouts are reasonably accurate. We want this to be as small
// as possible without causing too much flakiness.
base::TimeDelta EpsilonTimeout();
// Stopwatch -------------------------------------------------------------------
// A simple "stopwatch" for measuring time elapsed from a given starting point.
class Stopwatch {
public:
Stopwatch() {}
~Stopwatch() {}
void Start() { start_time_ = base::TimeTicks::Now(); }
base::TimeDelta Elapsed() { return base::TimeTicks::Now() - start_time_; }
private:
base::TimeTicks start_time_;
DISALLOW_COPY_AND_ASSIGN(Stopwatch);
};
} // namespace test
} // namespace system
} // namespace mojo
#endif // MOJO_SYSTEM_TEST_UTILS_H_
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