rsSignal.cpp revision 4698e2bec54a094e5c73936b9cf3db9d3c0b87cc
112b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams/* 212b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * Copyright (C) 2009 The Android Open Source Project 312b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * 412b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * Licensed under the Apache License, Version 2.0 (the "License"); 512b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * you may not use this file except in compliance with the License. 612b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * You may obtain a copy of the License at 712b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * 812b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * http://www.apache.org/licenses/LICENSE-2.0 912b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * 1012b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * Unless required by applicable law or agreed to in writing, software 1112b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * distributed under the License is distributed on an "AS IS" BASIS, 1212b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1312b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * See the License for the specific language governing permissions and 1412b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams * limitations under the License. 1512b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams */ 1612b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 1712b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams#include "rsSignal.h" 1843cfc0cbe6e6e8f585a0ae5f1d9cc2859ab1dda7Stephen Hines#include <errno.h> 1912b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 2012b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Samsusing namespace android; 2112b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Samsusing namespace android::renderscript; 2212b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 2312b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 24afb743aca56c18beb7ab924e75cb6e070ef3e55aAlex SakhartchoukSignal::Signal() { 2512b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams mSet = true; 2612b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams} 2712b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 28afb743aca56c18beb7ab924e75cb6e070ef3e55aAlex SakhartchoukSignal::~Signal() { 2912b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams pthread_mutex_destroy(&mMutex); 3012b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams pthread_cond_destroy(&mCondition); 3112b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams} 3212b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 33afb743aca56c18beb7ab924e75cb6e070ef3e55aAlex Sakhartchoukbool Signal::init() { 3444bef6fba6244292b751387f3d6c31cca96c28adChris Wailes int status = pthread_mutex_init(&mMutex, nullptr); 3512b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams if (status) { 364698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes ALOGE("Signal::init: mutex init failure: %s", strerror(status)); 3712b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams return false; 3812b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams } 3912b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 4044bef6fba6244292b751387f3d6c31cca96c28adChris Wailes status = pthread_cond_init(&mCondition, nullptr); 4112b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams if (status) { 424698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes ALOGE("Signal::init: condition init failure: %s", strerror(status)); 4312b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams pthread_mutex_destroy(&mMutex); 4412b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams return false; 4512b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams } 4612b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 4712b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams return true; 4812b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams} 4912b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 50afb743aca56c18beb7ab924e75cb6e070ef3e55aAlex Sakhartchoukvoid Signal::set() { 514698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes int status = pthread_mutex_lock(&mMutex); 5212b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams if (status) { 534698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes ALOGE("Signal::set: error locking for set condition: %s", strerror(status)); 5412b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams return; 5512b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams } 5612b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 5712b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams mSet = true; 5812b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 5912b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams status = pthread_cond_signal(&mCondition); 6012b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams if (status) { 614698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes ALOGE("Signal::set: error on set condition: %s", strerror(status)); 6212b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams } 6312b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 6412b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams status = pthread_mutex_unlock(&mMutex); 6512b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams if (status) { 664698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes ALOGE("Signal::set: error unlocking for set condition: %s", strerror(status)); 6712b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams } 6812b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams} 6912b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 704698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughesvoid Signal::wait() { 714698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes int status = pthread_mutex_lock(&mMutex); 7212b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams if (status) { 734698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes ALOGE("Signal::wait: error locking for condition: %s", strerror(status)); 744698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes return; 7512b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams } 7612b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 7712b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams if (!mSet) { 784698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes status = pthread_cond_wait(&mCondition, &mMutex); 79e0aab4a8ff1cffd8cfaedc2623db94072549e0e5Jason Sams } 80e0aab4a8ff1cffd8cfaedc2623db94072549e0e5Jason Sams 81e0aab4a8ff1cffd8cfaedc2623db94072549e0e5Jason Sams if (!status) { 82e0aab4a8ff1cffd8cfaedc2623db94072549e0e5Jason Sams mSet = false; 83e0aab4a8ff1cffd8cfaedc2623db94072549e0e5Jason Sams } else { 840b575de8ed0b628d84d256f5846500b0385979bdTim Murray#ifndef RS_SERVER 854698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes ALOGE("Signal::wait: error waiting for condition: %s", strerror(status)); 860b575de8ed0b628d84d256f5846500b0385979bdTim Murray#endif 8712b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams } 8812b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 8912b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams status = pthread_mutex_unlock(&mMutex); 9012b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams if (status) { 914698e2bec54a094e5c73936b9cf3db9d3c0b87ccElliott Hughes ALOGE("Signal::wait: error unlocking for condition: %s", strerror(status)); 9212b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams } 9312b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams} 9412b14ae9fa34f4fd0bf21a2a4ac95a4864248fe9Jason Sams 95