| /* |
| * Copyright (C) 2015 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 ANDROID_WORKER_H_ |
| #define ANDROID_WORKER_H_ |
| |
| #include <pthread.h> |
| #include <string> |
| |
| namespace android { |
| |
| class Worker { |
| public: |
| int Lock(); |
| int Unlock(); |
| |
| // Must be called with the lock acquired |
| int SignalLocked(); |
| int ExitLocked(); |
| |
| // Convenience versions of above, acquires the lock |
| int Signal(); |
| int Exit(); |
| |
| protected: |
| Worker(const char *name, int priority); |
| virtual ~Worker(); |
| |
| int InitWorker(); |
| |
| bool initialized() const; |
| |
| virtual void Routine() = 0; |
| |
| /* |
| * Must be called with the lock acquired. |
| * Returns -EINTR if interrupted by exit request |
| */ |
| int WaitForSignalOrExitLocked(); |
| |
| private: |
| static void *InternalRoutine(void *worker); |
| |
| // Must be called with the lock acquired |
| int SignalThreadLocked(bool exit); |
| |
| std::string name_; |
| int priority_; |
| |
| pthread_t thread_; |
| pthread_mutex_t lock_; |
| pthread_cond_t cond_; |
| |
| bool exit_; |
| bool initialized_; |
| }; |
| } |
| |
| #endif |