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