97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
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// Copyright 2022 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// 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, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include <chrono>
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#include "gtest/gtest.h"
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#include "pw_sync/recursive_mutex.h"
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namespace pw::sync {
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namespace {
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extern "C" {
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// Functions defined in recusive_mutex_facade_test_c.c that call the API from C.
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void pw_sync_RecursiveMutex_CallLock(pw_sync_RecursiveMutex* mutex);
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bool pw_sync_RecursiveMutex_CallTryLock(pw_sync_RecursiveMutex* mutex);
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void pw_sync_RecursiveMutex_CallUnlock(pw_sync_RecursiveMutex* mutex);
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} // extern "C"
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// TODO(b/235284163): Add real concurrency tests once we have pw::thread.
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TEST(RecursiveMutex, LockUnlock) PW_NO_LOCK_SAFETY_ANALYSIS {
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pw::sync::RecursiveMutex mutex;
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for (int i = 0; i < 10; ++i) {
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mutex.lock();
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}
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for (int i = 0; i < 10; ++i) {
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mutex.unlock();
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}
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}
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RecursiveMutex static_mutex;
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TEST(RecursiveMutex, LockUnlockStatic) PW_NO_LOCK_SAFETY_ANALYSIS {
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static_mutex.lock();
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for (int i = 0; i < 10; ++i) {
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EXPECT_TRUE(static_mutex.try_lock());
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}
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for (int i = 0; i < 10; ++i) {
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static_mutex.unlock(); // undo the try_lock() calls
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}
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static_mutex.unlock(); // undo the inital lock() call
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}
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TEST(RecursiveMutex, TryLockUnlock) PW_NO_LOCK_SAFETY_ANALYSIS {
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pw::sync::RecursiveMutex mutex;
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ASSERT_TRUE(mutex.try_lock());
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const bool locked_again = mutex.try_lock();
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EXPECT_TRUE(locked_again);
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if (locked_again) {
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mutex.unlock();
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}
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mutex.unlock();
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}
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TEST(RecursiveMutex, LockUnlockInC) {
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pw::sync::RecursiveMutex mutex;
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pw_sync_RecursiveMutex_CallLock(&mutex);
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pw_sync_RecursiveMutex_CallLock(&mutex);
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pw_sync_RecursiveMutex_CallLock(&mutex);
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pw_sync_RecursiveMutex_CallUnlock(&mutex);
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pw_sync_RecursiveMutex_CallUnlock(&mutex);
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pw_sync_RecursiveMutex_CallUnlock(&mutex);
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}
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TEST(RecursiveMutex, TryLockUnlockInC) {
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pw::sync::RecursiveMutex mutex;
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ASSERT_TRUE(pw_sync_RecursiveMutex_CallTryLock(&mutex));
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const bool locked_again = pw_sync_RecursiveMutex_CallTryLock(&mutex);
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EXPECT_TRUE(locked_again);
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if (locked_again) {
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pw_sync_RecursiveMutex_CallUnlock(&mutex);
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}
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pw_sync_RecursiveMutex_CallUnlock(&mutex);
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}
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} // namespace
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} // namespace pw::sync
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