1 /* 2 * Copyright (c) 2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef COMMON_COMPONENTS_BASE_SPINLOCK_H 17 #define COMMON_COMPONENTS_BASE_SPINLOCK_H 18 19 #include <pthread.h> 20 21 #include "common_interfaces/base/common.h" 22 23 namespace common { 24 class SpinLock { 25 public: 26 // Create a Mutex that is not held by anybody. SpinLock()27 SpinLock() { pthread_spin_init(&spinlock_, 0); } 28 ~SpinLock()29 ~SpinLock() { pthread_spin_destroy(&spinlock_); } 30 Lock()31 void Lock() { pthread_spin_lock(&spinlock_); } 32 Unlock()33 void Unlock() { pthread_spin_unlock(&spinlock_); } 34 TryLock()35 bool TryLock() { return pthread_spin_trylock(&spinlock_) == 0; } 36 37 private: 38 pthread_spinlock_t spinlock_; 39 NO_COPY_SEMANTIC_CC(SpinLock); 40 }; 41 } // namespace common 42 43 #endif // COMMON_COMPONENTS_BASE_SPINLOCK_H 44