1 /*
2 * Copyright 2004 The WebRTC Project Authors. All rights reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "rtc_base/event.h"
12
13 #include "rtc_base/platform_thread.h"
14 #include "test/gtest.h"
15
16 namespace rtc {
17
TEST(EventTest,InitiallySignaled)18 TEST(EventTest, InitiallySignaled) {
19 Event event(false, true);
20 ASSERT_TRUE(event.Wait(0));
21 }
22
TEST(EventTest,ManualReset)23 TEST(EventTest, ManualReset) {
24 Event event(true, false);
25 ASSERT_FALSE(event.Wait(0));
26
27 event.Set();
28 ASSERT_TRUE(event.Wait(0));
29 ASSERT_TRUE(event.Wait(0));
30
31 event.Reset();
32 ASSERT_FALSE(event.Wait(0));
33 }
34
TEST(EventTest,AutoReset)35 TEST(EventTest, AutoReset) {
36 Event event;
37 ASSERT_FALSE(event.Wait(0));
38
39 event.Set();
40 ASSERT_TRUE(event.Wait(0));
41 ASSERT_FALSE(event.Wait(0));
42 }
43
44 class SignalerThread {
45 public:
SignalerThread()46 SignalerThread() : thread_(&ThreadFn, this, "EventPerf") {}
Start(Event * writer,Event * reader)47 void Start(Event* writer, Event* reader) {
48 writer_ = writer;
49 reader_ = reader;
50 thread_.Start();
51 }
Stop()52 void Stop() {
53 stop_event_.Set();
54 thread_.Stop();
55 }
ThreadFn(void * param)56 static void ThreadFn(void* param) {
57 auto* me = static_cast<SignalerThread*>(param);
58 while (!me->stop_event_.Wait(0)) {
59 me->writer_->Set();
60 me->reader_->Wait(Event::kForever);
61 }
62 }
63 Event stop_event_;
64 Event* writer_;
65 Event* reader_;
66 PlatformThread thread_;
67 };
68
69 // These tests are disabled by default and only intended to be run manually.
TEST(EventTest,DISABLED_PerformanceSingleThread)70 TEST(EventTest, DISABLED_PerformanceSingleThread) {
71 static const int kNumIterations = 10000000;
72 Event event;
73 for (int i = 0; i < kNumIterations; ++i) {
74 event.Set();
75 event.Wait(0);
76 }
77 }
78
TEST(EventTest,DISABLED_PerformanceMultiThread)79 TEST(EventTest, DISABLED_PerformanceMultiThread) {
80 static const int kNumIterations = 10000;
81 Event read;
82 Event write;
83 SignalerThread thread;
84 thread.Start(&read, &write);
85
86 for (int i = 0; i < kNumIterations; ++i) {
87 write.Set();
88 read.Wait(Event::kForever);
89 }
90 write.Set();
91
92 thread.Stop();
93 }
94
95 } // namespace rtc
96