mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 07:06:11 -04:00
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "internal/platform/implementation/apple/mutex.h"
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#include "gtest/gtest.h"
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#include "absl/synchronization/mutex.h"
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#include "absl/synchronization/notification.h"
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#include "absl/time/clock.h"
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#include "absl/time/time.h"
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#include "thread/fiber/fiber.h"
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namespace nearby {
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namespace apple {
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namespace {
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static const absl::Duration kTimeToWait = absl::Milliseconds(500);
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TEST(MutexTest, LockOnce_UnlockOnce) {
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Mutex test_mutex_1{};
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test_mutex_1.Lock();
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test_mutex_1.Unlock();
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RecursiveMutex test_mutex_2;
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test_mutex_2.Lock();
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test_mutex_2.Unlock();
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}
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TEST(MutexTest, BasicLockingWorks) {
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absl::Notification lock_obtained;
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Mutex test_mutex{};
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test_mutex.Lock();
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thread::Fiber f([&test_mutex, &lock_obtained] {
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test_mutex.Lock();
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test_mutex.Unlock();
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lock_obtained.Notify();
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});
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EXPECT_FALSE(lock_obtained.WaitForNotificationWithTimeout(kTimeToWait));
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test_mutex.Unlock();
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EXPECT_TRUE(lock_obtained.WaitForNotificationWithTimeout(kTimeToWait));
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f.Join();
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}
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TEST(MutexTest, RecursiveLockingWorks) {
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absl::Notification lock_obtained;
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RecursiveMutex test_mutex;
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test_mutex.Lock();
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thread::Fiber f([&test_mutex, &lock_obtained] {
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test_mutex.Lock();
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test_mutex.Unlock();
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lock_obtained.Notify();
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});
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EXPECT_FALSE(lock_obtained.WaitForNotificationWithTimeout(kTimeToWait));
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test_mutex.Unlock();
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EXPECT_TRUE(lock_obtained.WaitForNotificationWithTimeout(kTimeToWait));
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f.Join();
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}
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TEST(MutexTest, RecursiveLockingForNestedWorks) {
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absl::Notification lock_obtained;
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RecursiveMutex test_mutex;
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test_mutex.Lock();
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thread::Fiber f([&test_mutex, &lock_obtained]()
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ABSL_NO_THREAD_SAFETY_ANALYSIS {
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test_mutex.Lock();
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test_mutex.Lock();
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test_mutex.Unlock();
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test_mutex.Unlock();
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lock_obtained.Notify();
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});
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EXPECT_FALSE(lock_obtained.WaitForNotificationWithTimeout(kTimeToWait));
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test_mutex.Unlock();
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EXPECT_TRUE(lock_obtained.WaitForNotificationWithTimeout(kTimeToWait));
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f.Join();
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}
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} // namespace
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} // namespace apple
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} // namespace nearby
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