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 
Event(Increment::IncrementCase type)21 Event::Event(Increment::IncrementCase type) : mIncrementType(type) {}
22 
readyToExecute()23 void Event::readyToExecute() {
24     changeState(Event::EventState::Waiting);
25     waitUntil(Event::EventState::Signaled);
26     changeState(Event::EventState::Running);
27 }
28 
complete()29 void Event::complete() {
30     waitUntil(Event::EventState::Waiting);
31     changeState(Event::EventState::Signaled);
32     waitUntil(Event::EventState::Running);
33 }
34 
waitUntil(Event::EventState state)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 
changeState(Event::EventState state)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 
getIncrementType()48 Increment::IncrementCase Event::getIncrementType() {
49     return mIncrementType;
50 }
51