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
25namespace android {
26
27class 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