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https://github.com/mollyim/webrtc.git
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2fc37573b9
Bug: none Change-Id: I94def80a7eb815f74d1be691d21b5f3661771a71 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/279821 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Evan Shrubsole <eshr@webrtc.org> Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38457}
115 lines
3.1 KiB
C++
115 lines
3.1 KiB
C++
/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "rtc_base/event.h"
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#include "api/units/time_delta.h"
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#include "rtc_base/platform_thread.h"
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#include "system_wrappers/include/clock.h"
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#include "test/gtest.h"
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namespace rtc {
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TEST(EventTest, InitiallySignaled) {
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Event event(false, true);
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ASSERT_TRUE(event.Wait(webrtc::TimeDelta::Zero()));
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}
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TEST(EventTest, ManualReset) {
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Event event(true, false);
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ASSERT_FALSE(event.Wait(webrtc::TimeDelta::Zero()));
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event.Set();
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ASSERT_TRUE(event.Wait(webrtc::TimeDelta::Zero()));
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ASSERT_TRUE(event.Wait(webrtc::TimeDelta::Zero()));
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event.Reset();
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ASSERT_FALSE(event.Wait(webrtc::TimeDelta::Zero()));
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}
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TEST(EventTest, AutoReset) {
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Event event;
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ASSERT_FALSE(event.Wait(webrtc::TimeDelta::Zero()));
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event.Set();
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ASSERT_TRUE(event.Wait(webrtc::TimeDelta::Zero()));
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ASSERT_FALSE(event.Wait(webrtc::TimeDelta::Zero()));
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}
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class SignalerThread {
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public:
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void Start(Event* writer, Event* reader) {
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writer_ = writer;
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reader_ = reader;
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thread_ = PlatformThread::SpawnJoinable(
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[this] {
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while (!stop_event_.Wait(webrtc::TimeDelta::Zero())) {
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writer_->Set();
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reader_->Wait(Event::kForever);
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}
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},
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"EventPerf");
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}
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void Stop() {
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stop_event_.Set();
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thread_.Finalize();
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}
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Event stop_event_;
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Event* writer_;
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Event* reader_;
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PlatformThread thread_;
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};
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TEST(EventTest, UnsignaledWaitDoesNotReturnBeforeTimeout) {
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constexpr webrtc::TimeDelta kDuration = webrtc::TimeDelta::Micros(10'499);
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Event event;
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auto begin = webrtc::Clock::GetRealTimeClock()->CurrentTime();
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EXPECT_FALSE(event.Wait(kDuration));
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EXPECT_GE(webrtc::Clock::GetRealTimeClock()->CurrentTime(),
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begin + kDuration);
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}
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// These tests are disabled by default and only intended to be run manually.
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TEST(EventTest, DISABLED_PerformanceSingleThread) {
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static const int kNumIterations = 10000000;
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Event event;
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for (int i = 0; i < kNumIterations; ++i) {
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event.Set();
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event.Wait(webrtc::TimeDelta::Zero());
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}
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}
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TEST(EventTest, DISABLED_PerformanceMultiThread) {
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static const int kNumIterations = 10000;
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Event read;
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Event write;
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SignalerThread thread;
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thread.Start(&read, &write);
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for (int i = 0; i < kNumIterations; ++i) {
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write.Set();
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read.Wait(Event::kForever);
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}
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write.Set();
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thread.Stop();
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}
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#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
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// Tests that we crash if we attempt to call rtc::Event::Wait while we're
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// not allowed to (as per `RTC_DISALLOW_WAIT()`).
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TEST(EventTestDeathTest, DisallowEventWait) {
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Event event;
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RTC_DISALLOW_WAIT();
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EXPECT_DEATH(event.Wait(Event::kForever), "");
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}
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#endif // RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
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} // namespace rtc
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