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 #include "Event.h" 18 19 using namespace android; 20 21 Event::Event(Increment::IncrementCase type) : mIncrementType(type) {} 22 23 void Event::readyToExecute() { 24 changeState(Event::EventState::Waiting); 25 waitUntil(Event::EventState::Signaled); 26 changeState(Event::EventState::Running); 27 } 28 29 void Event::complete() { 30 waitUntil(Event::EventState::Waiting); 31 changeState(Event::EventState::Signaled); 32 waitUntil(Event::EventState::Running); 33 } 34 35 void Event::waitUntil(Event::EventState state) { 36 std::unique_lock<std::mutex> lock(mLock); 37 mCond.wait(lock, [this, state] { return (mState == state); }); 38 } 39 40 void Event::changeState(Event::EventState state) { 41 std::unique_lock<std::mutex> lock(mLock); 42 mState = state; 43 lock.unlock(); 44 45 mCond.notify_one(); 46 } 47 48 Increment::IncrementCase Event::getIncrementType() { 49 return mIncrementType; 50 } 51
