// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "mojo/core/test_utils.h"
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#include <stdint.h>
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#include <limits>
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#include "base/logging.h"
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#include "base/test/test_timeouts.h"
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#include "base/threading/platform_thread.h" // For |Sleep()|.
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#include "build/build_config.h"
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namespace mojo {
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namespace core {
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namespace test {
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MojoDeadline DeadlineFromMilliseconds(unsigned milliseconds) {
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return static_cast<MojoDeadline>(milliseconds) * 1000;
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}
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MojoDeadline EpsilonDeadline() {
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// Originally, our epsilon timeout was 10 ms, which was mostly fine but flaky on
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// some Windows bots. I don't recall ever seeing flakes on other bots. At 30 ms
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// tests seem reliable on Windows bots, but not at 25 ms. We'd like this timeout
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// to be as small as possible (see the description in the .h file).
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//
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// Currently, |tiny_timeout()| is usually 100 ms (possibly scaled under ASAN,
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// etc.). Based on this, set it to (usually be) 30 ms on Windows and 20 ms
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// elsewhere.
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#if defined(OS_WIN) || defined(OS_ANDROID)
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return (TinyDeadline() * 3) / 10;
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#else
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return (TinyDeadline() * 2) / 10;
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#endif
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}
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MojoDeadline TinyDeadline() {
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return static_cast<MojoDeadline>(
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TestTimeouts::tiny_timeout().InMicroseconds());
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}
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MojoDeadline ActionDeadline() {
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return static_cast<MojoDeadline>(
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TestTimeouts::action_timeout().InMicroseconds());
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}
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void Sleep(MojoDeadline deadline) {
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CHECK_LE(deadline,
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static_cast<MojoDeadline>(std::numeric_limits<int64_t>::max()));
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base::PlatformThread::Sleep(
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base::TimeDelta::FromMicroseconds(static_cast<int64_t>(deadline)));
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}
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Stopwatch::Stopwatch() {}
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Stopwatch::~Stopwatch() {}
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void Stopwatch::Start() {
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start_time_ = base::TimeTicks::Now();
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}
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MojoDeadline Stopwatch::Elapsed() {
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int64_t result = (base::TimeTicks::Now() - start_time_).InMicroseconds();
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// |DCHECK_GE|, not |CHECK_GE|, since this may be performance-important.
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DCHECK_GE(result, 0);
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return static_cast<MojoDeadline>(result);
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}
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} // namespace test
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} // namespace core
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} // namespace mojo
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