1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "ResponsivenessTimer.h"
29#include <wtf/RunLoop.h>
30
31namespace WebKit {
32
33class WebProcessProxy;
34
35class BackgroundProcessResponsivenessTimer {
36public:
37 explicit BackgroundProcessResponsivenessTimer(WebProcessProxy&);
38 ~BackgroundProcessResponsivenessTimer();
39 void updateState();
40
41 void didReceiveBackgroundResponsivenessPong();
42 bool isResponsive() const { return m_isResponsive; }
43
44 void invalidate();
45 void processTerminated();
46
47private:
48 void responsivenessCheckTimerFired();
49 void timeoutTimerFired();
50 void setResponsive(bool);
51
52 bool shouldBeActive() const;
53 bool isActive() const;
54 void scheduleNextResponsivenessCheck();
55 ResponsivenessTimer::Client& client() const;
56
57 WebProcessProxy& m_webProcessProxy;
58 Seconds m_checkingInterval;
59 RunLoop::Timer<BackgroundProcessResponsivenessTimer> m_responsivenessCheckTimer;
60 RunLoop::Timer<BackgroundProcessResponsivenessTimer> m_timeoutTimer;
61 bool m_isResponsive { true };
62};
63
64}
65