1ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy/* 2ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * Copyright (C) 2013 The Android Open Source Project 3ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * 4ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 5ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * you may not use this file except in compliance with the License. 6ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * You may obtain a copy of the License at 7ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * 8ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * http://www.apache.org/licenses/LICENSE-2.0 9ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * 10ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * Unless required by applicable law or agreed to in writing, software 11ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * distributed under the License is distributed on an "AS IS" BASIS, 12ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * See the License for the specific language governing permissions and 14ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy * limitations under the License. 15ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy */ 16ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 17ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy#ifndef ANDROID_HWUI_BARRIER_H 18ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy#define ANDROID_HWUI_BARRIER_H 19ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 20ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy#include <utils/Condition.h> 21ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 22ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guynamespace android { 23ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guynamespace uirenderer { 24ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 25ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guyclass Barrier { 26ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guypublic: 27ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy Barrier(Condition::WakeUpType type = Condition::WAKE_UP_ALL) : mType(type), mOpened(false) { } 28ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy ~Barrier() { } 29ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 30ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy void open() { 31ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy Mutex::Autolock l(mLock); 32ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy mOpened = true; 33ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy mCondition.signal(mType); 34ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy } 35ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 36ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy void close() { 37ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy Mutex::Autolock l(mLock); 38ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy mOpened = false; 39ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy } 40ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 41ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy void wait() const { 42ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy Mutex::Autolock l(mLock); 43ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy while (!mOpened) { 44ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy mCondition.wait(mLock); 45ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy } 46ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy } 47ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 48ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guyprivate: 49ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy Condition::WakeUpType mType; 50ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy volatile bool mOpened; 51ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy mutable Mutex mLock; 52ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy mutable Condition mCondition; 53ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy}; 54ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 55ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy}; // namespace uirenderer 56ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy}; // namespace android 57ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy 58ca89e2a68703bd428e8b66547d033a6ed35b3595Romain Guy#endif // ANDROID_HWUI_BARRIER_H 59