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 using Increment = surfaceflinger::Increment; 28 29 class Event { 30 public: 31 Event(Increment::IncrementCase); 32 33 enum class EventState { 34 SettingUp, // Completing as much time-independent work as possible 35 Waiting, // Waiting for signal from main thread to finish execution 36 Signaled, // Signaled by main thread, about to immediately switch to Running 37 Running // Finishing execution of rest of work 38 }; 39 40 void readyToExecute(); 41 void complete(); 42 43 Increment::IncrementCase getIncrementType(); 44 45 private: 46 void waitUntil(EventState state); 47 void changeState(EventState state); 48 49 std::mutex mLock; 50 std::condition_variable mCond; 51 52 EventState mState = EventState::SettingUp; 53 54 Increment::IncrementCase mIncrementType; 55 }; 56 } 57 #endif 58