1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "ChildProcess.h"
#if !OS(WINDOWS)
#include <unistd.h>
#endif
using namespace WebCore;
namespace WebKit {
void ChildProcess::disableTermination()
{
m_terminationCounter++;
m_terminationTimer.stop();
}
void ChildProcess::enableTermination()
{
ASSERT(m_terminationCounter > 0);
m_terminationCounter--;
if (m_terminationCounter)
return;
if (!m_terminationTimeout) {
terminationTimerFired();
return;
}
m_terminationTimer.startOneShot(m_terminationTimeout);
}
ChildProcess::ChildProcess()
: m_terminationTimeout(0)
, m_terminationCounter(0)
, m_terminationTimer(RunLoop::main(), this, &ChildProcess::terminationTimerFired)
#if PLATFORM(MAC)
, m_applicationIsOccluded(false)
#endif
{
// FIXME: The termination timer should not be scheduled on the main run loop.
// It won't work with the threaded mode, but it's not really useful anyway as is.
#if PLATFORM(MAC)
disableProcessSuppression(processSuppressionVisibleApplicationReason);
#endif
}
ChildProcess::~ChildProcess()
{
}
void ChildProcess::terminationTimerFired()
{
if (!shouldTerminate())
return;
terminate();
}
void ChildProcess::terminate()
{
RunLoop::main()->stop();
}
NO_RETURN static void watchdogCallback()
{
// We use _exit here since the watchdog callback is called from another thread and we don't want
// global destructors or atexit handlers to be called from this thread while the main thread is busy
// doing its thing.
_exit(EXIT_FAILURE);
}
void ChildProcess::didCloseOnConnectionWorkQueue(WorkQueue& workQueue, CoreIPC::Connection*)
{
// If the connection has been closed and we haven't responded in the main thread for 10 seconds
// the process will exit forcibly.
static const double watchdogDelay = 10.0;
workQueue.dispatchAfterDelay(bind(static_cast<void(*)()>(watchdogCallback)), watchdogDelay);
}
} // namespace WebKit
|
