ChildProcess.cpp revision 2fc2651226baac27029e38c9d6ef883fa32084db 
1/*
2 * Copyright (C) 2010 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#include "config.h"
27#include "ChildProcess.h"
28
29#if !OS(WINDOWS)
30#include <unistd.h>
31#endif
32
33namespace WebKit {
34
35ChildProcess::ChildProcess()
36{
37}
38
39ChildProcess::~ChildProcess()
40{
41}
42
43NO_RETURN static void watchdogCallback()
44{
45    // We use _exit here since the watchdog callback is called from another thread and we don't want
46    // global destructors or atexit handlers to be called from this thread while the main thread is busy
47    // doing its thing.
48    _exit(EXIT_FAILURE);
49}
50
51void ChildProcess::didCloseOnConnectionWorkQueue(WorkQueue& workQueue, CoreIPC::Connection*)
52{
53    // If the connection has been closed and we haven't responded in the main thread for 10 seconds
54    // the process will exit forcibly.
55    static const double watchdogDelay = 10.0;
56
57    workQueue.scheduleWorkAfterDelay(WorkItem::create(watchdogCallback), watchdogDelay);
58}
59
60} // namespace WebKit
61