1 /*
2 * Copyright 2024 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18 #include <condition_variable>
19
20 #include "BackgroundExecutor.h"
21
22 namespace android {
23
24 class BackgroundExecutorTest : public testing::Test {};
25
26 namespace {
27
TEST_F(BackgroundExecutorTest,singleProducer)28 TEST_F(BackgroundExecutorTest, singleProducer) {
29 std::mutex mutex;
30 std::condition_variable condition_variable;
31 bool backgroundTaskComplete = false;
32
33 BackgroundExecutor::getInstance().sendCallbacks(
34 {[&mutex, &condition_variable, &backgroundTaskComplete]() {
35 std::lock_guard<std::mutex> lock{mutex};
36 condition_variable.notify_one();
37 backgroundTaskComplete = true;
38 }});
39
40 std::unique_lock<std::mutex> lock{mutex};
41 condition_variable.wait(lock, [&backgroundTaskComplete]() { return backgroundTaskComplete; });
42 ASSERT_TRUE(backgroundTaskComplete);
43 }
44
TEST_F(BackgroundExecutorTest,multipleProducers)45 TEST_F(BackgroundExecutorTest, multipleProducers) {
46 std::mutex mutex;
47 std::condition_variable condition_variable;
48 const int backgroundTaskCount = 10;
49 int backgroundTaskCompleteCount = 0;
50
51 for (int i = 0; i < backgroundTaskCount; i++) {
52 std::thread([&mutex, &condition_variable, &backgroundTaskCompleteCount]() {
53 BackgroundExecutor::getInstance().sendCallbacks(
54 {[&mutex, &condition_variable, &backgroundTaskCompleteCount]() {
55 std::lock_guard<std::mutex> lock{mutex};
56 backgroundTaskCompleteCount++;
57 if (backgroundTaskCompleteCount == backgroundTaskCount) {
58 condition_variable.notify_one();
59 }
60 }});
61 }).detach();
62 }
63
64 std::unique_lock<std::mutex> lock{mutex};
65 condition_variable.wait(lock, [&backgroundTaskCompleteCount]() {
66 return backgroundTaskCompleteCount == backgroundTaskCount;
67 });
68 ASSERT_EQ(backgroundTaskCount, backgroundTaskCompleteCount);
69 }
70
71 } // namespace
72
73 } // namespace android
74