1 /* 2 * Copyright 2016 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_SURFACEREPLAYER_EVENT_H 18 #define ANDROID_SURFACEREPLAYER_EVENT_H 19 20 #include <frameworks/native/cmds/surfacereplayer/proto/src/trace.pb.h> 21 22 #include <condition_variable> 23 #include <mutex> 24 25 namespace android { 26 27 class Event { 28 public: 29 Event(Increment::IncrementCase); 30 31 enum class EventState { 32 SettingUp, // Completing as much time-independent work as possible 33 Waiting, // Waiting for signal from main thread to finish execution 34 Signaled, // Signaled by main thread, about to immediately switch to Running 35 Running // Finishing execution of rest of work 36 }; 37 38 void readyToExecute(); 39 void complete(); 40 41 Increment::IncrementCase getIncrementType(); 42 43 private: 44 void waitUntil(EventState state); 45 void changeState(EventState state); 46 47 std::mutex mLock; 48 std::condition_variable mCond; 49 50 EventState mState = EventState::SettingUp; 51 52 Increment::IncrementCase mIncrementType; 53 }; 54 } 55 #endif 56