Repo created

TMessagesProj/jni/voip/webrtc/rtc_base/event_unittest.cc

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+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "rtc_base/event.h"
+
+#include "api/units/time_delta.h"
+#include "rtc_base/platform_thread.h"
+#include "system_wrappers/include/clock.h"
+#include "test/gtest.h"
+
+namespace rtc {
+
+TEST(EventTest, InitiallySignaled) {
+  Event event(false, true);
+  ASSERT_TRUE(event.Wait(webrtc::TimeDelta::Zero()));
+}
+
+TEST(EventTest, ManualReset) {
+  Event event(true, false);
+  ASSERT_FALSE(event.Wait(webrtc::TimeDelta::Zero()));
+
+  event.Set();
+  ASSERT_TRUE(event.Wait(webrtc::TimeDelta::Zero()));
+  ASSERT_TRUE(event.Wait(webrtc::TimeDelta::Zero()));
+
+  event.Reset();
+  ASSERT_FALSE(event.Wait(webrtc::TimeDelta::Zero()));
+}
+
+TEST(EventTest, AutoReset) {
+  Event event;
+  ASSERT_FALSE(event.Wait(webrtc::TimeDelta::Zero()));
+
+  event.Set();
+  ASSERT_TRUE(event.Wait(webrtc::TimeDelta::Zero()));
+  ASSERT_FALSE(event.Wait(webrtc::TimeDelta::Zero()));
+}
+
+class SignalerThread {
+ public:
+  void Start(Event* writer, Event* reader) {
+    writer_ = writer;
+    reader_ = reader;
+    thread_ = PlatformThread::SpawnJoinable(
+        [this] {
+          while (!stop_event_.Wait(webrtc::TimeDelta::Zero())) {
+            writer_->Set();
+            reader_->Wait(Event::kForever);
+          }
+        },
+        "EventPerf");
+  }
+  void Stop() {
+    stop_event_.Set();
+    thread_.Finalize();
+  }
+  Event stop_event_;
+  Event* writer_;
+  Event* reader_;
+  PlatformThread thread_;
+};
+
+TEST(EventTest, UnsignaledWaitDoesNotReturnBeforeTimeout) {
+  constexpr webrtc::TimeDelta kDuration = webrtc::TimeDelta::Micros(10'499);
+  Event event;
+  auto begin = webrtc::Clock::GetRealTimeClock()->CurrentTime();
+  EXPECT_FALSE(event.Wait(kDuration));
+  EXPECT_GE(webrtc::Clock::GetRealTimeClock()->CurrentTime(),
+            begin + kDuration);
+}
+
+// These tests are disabled by default and only intended to be run manually.
+TEST(EventTest, DISABLED_PerformanceSingleThread) {
+  static const int kNumIterations = 10000000;
+  Event event;
+  for (int i = 0; i < kNumIterations; ++i) {
+    event.Set();
+    event.Wait(webrtc::TimeDelta::Zero());
+  }
+}
+
+TEST(EventTest, DISABLED_PerformanceMultiThread) {
+  static const int kNumIterations = 10000;
+  Event read;
+  Event write;
+  SignalerThread thread;
+  thread.Start(&read, &write);
+
+  for (int i = 0; i < kNumIterations; ++i) {
+    write.Set();
+    read.Wait(Event::kForever);
+  }
+  write.Set();
+
+  thread.Stop();
+}
+
+#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
+// Tests that we crash if we attempt to call rtc::Event::Wait while we're
+// not allowed to (as per `RTC_DISALLOW_WAIT()`).
+TEST(EventTestDeathTest, DisallowEventWait) {
+  Event event;
+  RTC_DISALLOW_WAIT();
+  EXPECT_DEATH(event.Wait(Event::kForever), "");
+}
+#endif  // RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
+
+}  // namespace rtc