1 /* 2 * Copyright (C) 2017 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 A_LOOPER_H_ 18 19 #define A_LOOPER_H_ 20 21 #include <android-base/macros.h> 22 #include <utils/Condition.h> 23 #include <utils/Mutex.h> 24 25 #include <set> 26 27 struct ASensorEventQueue; 28 29 struct ALooper { 30 ALooper(); 31 32 void signalSensorEvents(ASensorEventQueue *queue); 33 void wake(); 34 35 int pollOnce(int timeoutMillis, int *outFd, int *outEvents, void **outData); 36 37 void invalidateSensorQueue(ASensorEventQueue *queue); 38 39 private: 40 android::Mutex mLock; 41 android::Condition mCondition; 42 43 std::set<ASensorEventQueue *> mReadyQueues; 44 bool mAwoken; 45 46 DISALLOW_COPY_AND_ASSIGN(ALooper); 47 }; 48 49 #endif // A_LOOPER_H_ 50
