| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ART_SRC_MUTEX_H_ |
| #define ART_SRC_MUTEX_H_ |
| |
| #include <pthread.h> |
| #include <stdint.h> |
| |
| #include <iosfwd> |
| #include <string> |
| |
| #include "gtest/gtest.h" |
| #include "logging.h" |
| #include "macros.h" |
| |
| namespace art { |
| |
| enum MutexRank { |
| kNoMutexRank = -1, |
| kHeapLock = 0, |
| kThreadListLock = 1, |
| kThreadSuspendCountLock = 2, |
| kMaxMutexRank = kThreadSuspendCountLock, |
| }; |
| std::ostream& operator<<(std::ostream& os, const MutexRank& rhs); |
| |
| class Mutex { |
| public: |
| explicit Mutex(const char* name, MutexRank rank = kNoMutexRank); |
| ~Mutex(); |
| |
| void Lock(); |
| |
| bool TryLock(); |
| |
| void Unlock(); |
| |
| #if !defined(NDEBUG) |
| void AssertHeld(); |
| void AssertNotHeld(); |
| #else |
| void AssertHeld() {} |
| void AssertNotHeld() {} |
| #endif |
| |
| uint64_t GetOwner(); |
| |
| private: |
| uint32_t GetDepth(); |
| |
| pthread_mutex_t mutex_; |
| std::string name_; |
| MutexRank rank_; |
| |
| friend class ConditionVariable; |
| friend class MutexTester; |
| DISALLOW_COPY_AND_ASSIGN(Mutex); |
| }; |
| |
| class MutexLock { |
| public: |
| explicit MutexLock(Mutex& mu) : mu_(mu) { |
| mu_.Lock(); |
| } |
| |
| ~MutexLock() { |
| mu_.Unlock(); |
| } |
| |
| private: |
| Mutex& mu_; |
| DISALLOW_COPY_AND_ASSIGN(MutexLock); |
| }; |
| |
| class ConditionVariable { |
| public: |
| explicit ConditionVariable(const std::string& name); |
| ~ConditionVariable(); |
| |
| void Broadcast(); |
| void Signal(); |
| void Wait(Mutex& mutex); |
| void TimedWait(Mutex& mutex, const timespec& ts); |
| |
| private: |
| pthread_cond_t cond_; |
| std::string name_; |
| DISALLOW_COPY_AND_ASSIGN(ConditionVariable); |
| }; |
| |
| } // namespace art |
| |
| #endif // ART_SRC_MUTEX_H_ |