1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_WORKER_POOL_H 18 #define ANDROID_WORKER_POOL_H 19 20 #include <pthread.h> 21 #include <string.h> 22 23 24 25 class WorkerPool { 26 public: 27 WorkerPool(); 28 ~WorkerPool(); 29 30 typedef void (*WorkerCallback_t)(void *usr, uint32_t idx); 31 32 bool init(int threadCount = -1); getWorkerCount()33 int getWorkerCount() const {return mCount;} 34 35 void waitForAll() const; 36 void waitFor(uint64_t) const; 37 uint64_t launchWork(WorkerCallback_t cb, void *usr, int maxThreads = -1); 38 39 40 41 42 protected: 43 class Signal { 44 public: 45 Signal(); 46 ~Signal(); 47 48 bool init(); 49 void set(); 50 51 // returns true if the signal occured 52 // false for timeout 53 bool wait(uint64_t timeout = 0); 54 55 protected: 56 bool mSet; 57 pthread_mutex_t mMutex; 58 pthread_cond_t mCondition; 59 }; 60 61 bool mExit; 62 volatile int mRunningCount; 63 volatile int mLaunchCount; 64 uint32_t mCount; 65 pthread_t *mThreadId; 66 pid_t *mNativeThreadId; 67 Signal mCompleteSignal; 68 Signal *mLaunchSignals; 69 WorkerCallback_t mLaunchCallback; 70 void *mLaunchData; 71 72 73 74 75 private: 76 //static void * threadProc(void *); 77 static void * helperThreadProc(void *); 78 79 80 }; 81 82 83 #endif 84