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 #include "mojo/system/test_utils.h"
6
7 #include "base/bind.h"
8 #include "base/callback.h"
9 #include "base/synchronization/waitable_event.h"
10 #include "base/test/test_timeouts.h"
11 #include "build/build_config.h"
12
13 namespace mojo {
14 namespace system {
15 namespace test {
16
17 namespace {
18
PostTaskAndWaitHelper(base::WaitableEvent * event,const base::Closure & task)19 void PostTaskAndWaitHelper(base::WaitableEvent* event,
20 const base::Closure& task) {
21 task.Run();
22 event->Signal();
23 }
24
25 } // namespace
26
PostTaskAndWait(scoped_refptr<base::TaskRunner> task_runner,const tracked_objects::Location & from_here,const base::Closure & task)27 void PostTaskAndWait(scoped_refptr<base::TaskRunner> task_runner,
28 const tracked_objects::Location& from_here,
29 const base::Closure& task) {
30 base::WaitableEvent event(false, false);
31 task_runner->PostTask(from_here,
32 base::Bind(&PostTaskAndWaitHelper, &event, task));
33 event.Wait();
34 }
35
EpsilonTimeout()36 base::TimeDelta EpsilonTimeout() {
37 // Originally, our epsilon timeout was 10 ms, which was mostly fine but flaky on
38 // some Windows bots. I don't recall ever seeing flakes on other bots. At 30 ms
39 // tests seem reliable on Windows bots, but not at 25 ms. We'd like this timeout
40 // to be as small as possible (see the description in the .h file).
41 //
42 // Currently, |tiny_timeout()| is usually 100 ms (possibly scaled under ASAN,
43 // etc.). Based on this, set it to (usually be) 30 ms on Windows and 20 ms
44 // elsewhere.
45 #if defined(OS_WIN)
46 return (TestTimeouts::tiny_timeout() * 3) / 10;
47 #else
48 return (TestTimeouts::tiny_timeout() * 2) / 10;
49 #endif
50 }
51
52 } // namespace test
53 } // namespace system
54 } // namespace mojo
55