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.
5 #ifndef MOJO_SYSTEM_TEST_UTILS_H_
6 #define MOJO_SYSTEM_TEST_UTILS_H_
10 #include "base/callback_forward.h"
11 #include "base/compiler_specific.h"
12 #include "base/macros.h"
13 #include "base/memory/ref_counted.h"
14 #include "base/task_runner.h"
15 #include "base/threading/thread.h"
16 #include "base/time/time.h"
18 namespace tracked_objects {
26 // Posts the given task (to the given task runner) and waits for it to complete.
27 // (Note: Doesn't spin the current thread's message loop, so if you're careless
28 // this could easily deadlock.)
29 void PostTaskAndWait(scoped_refptr<base::TaskRunner> task_runner,
30 const tracked_objects::Location& from_here,
31 const base::Closure& task);
33 // A timeout smaller than |TestTimeouts::tiny_timeout()|. Warning: This may lead
34 // to flakiness, but this is unavoidable if, e.g., you're trying to ensure that
35 // functions with timeouts are reasonably accurate. We want this to be as small
36 // as possible without causing too much flakiness.
37 base::TimeDelta EpsilonTimeout();
39 // Stopwatch -------------------------------------------------------------------
41 // A simple "stopwatch" for measuring time elapsed from a given starting point.
47 void Start() { start_time_ = base::TimeTicks::Now(); }
49 base::TimeDelta Elapsed() { return base::TimeTicks::Now() - start_time_; }
52 base::TimeTicks start_time_;
54 DISALLOW_COPY_AND_ASSIGN(Stopwatch);
61 #endif // MOJO_SYSTEM_TEST_UTILS_H_