1d0825bca7fe65beaee391d30da42e937db621564Steve Block/* 2d0825bca7fe65beaee391d30da42e937db621564Steve Block * Copyright (C) 2010 Apple Inc. All rights reserved. 3d0825bca7fe65beaee391d30da42e937db621564Steve Block * 4d0825bca7fe65beaee391d30da42e937db621564Steve Block * Redistribution and use in source and binary forms, with or without 5d0825bca7fe65beaee391d30da42e937db621564Steve Block * modification, are permitted provided that the following conditions 6d0825bca7fe65beaee391d30da42e937db621564Steve Block * are met: 7d0825bca7fe65beaee391d30da42e937db621564Steve Block * 1. Redistributions of source code must retain the above copyright 8d0825bca7fe65beaee391d30da42e937db621564Steve Block * notice, this list of conditions and the following disclaimer. 9d0825bca7fe65beaee391d30da42e937db621564Steve Block * 2. Redistributions in binary form must reproduce the above copyright 10d0825bca7fe65beaee391d30da42e937db621564Steve Block * notice, this list of conditions and the following disclaimer in the 11d0825bca7fe65beaee391d30da42e937db621564Steve Block * documentation and/or other materials provided with the distribution. 12d0825bca7fe65beaee391d30da42e937db621564Steve Block * 13d0825bca7fe65beaee391d30da42e937db621564Steve Block * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14d0825bca7fe65beaee391d30da42e937db621564Steve Block * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15d0825bca7fe65beaee391d30da42e937db621564Steve Block * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16d0825bca7fe65beaee391d30da42e937db621564Steve Block * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17d0825bca7fe65beaee391d30da42e937db621564Steve Block * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18d0825bca7fe65beaee391d30da42e937db621564Steve Block * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19d0825bca7fe65beaee391d30da42e937db621564Steve Block * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20d0825bca7fe65beaee391d30da42e937db621564Steve Block * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21d0825bca7fe65beaee391d30da42e937db621564Steve Block * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22d0825bca7fe65beaee391d30da42e937db621564Steve Block * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23d0825bca7fe65beaee391d30da42e937db621564Steve Block * THE POSSIBILITY OF SUCH DAMAGE. 24d0825bca7fe65beaee391d30da42e937db621564Steve Block */ 25d0825bca7fe65beaee391d30da42e937db621564Steve Block 262fc2651226baac27029e38c9d6ef883fa32084dbSteve Block#include "config.h" 2765f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch#include "ChildProcess.h" 28d0825bca7fe65beaee391d30da42e937db621564Steve Block 2965f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch#if !OS(WINDOWS) 3065f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch#include <unistd.h> 3165f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch#endif 32d0825bca7fe65beaee391d30da42e937db621564Steve Block 3365f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdochnamespace WebKit { 34d0825bca7fe65beaee391d30da42e937db621564Steve Block 352daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdochvoid ChildProcess::disableTermination() 3665f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch{ 372daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch m_terminationCounter++; 382daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch m_terminationTimer.stop(); 392daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch} 402daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 412daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdochvoid ChildProcess::enableTermination() 422daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch{ 432daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch ASSERT(m_terminationCounter > 0); 442daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch m_terminationCounter--; 452daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 462daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch if (m_terminationCounter) 472daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch return; 482daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 492daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch if (!m_terminationTimeout) { 502daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch terminationTimerFired(); 512daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch return; 522daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch } 532daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 542daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch m_terminationTimer.startOneShot(m_terminationTimeout); 552daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch} 562daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 572daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben MurdochChildProcess::ChildProcess(double terminationTimeout) 582daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch : m_terminationTimeout(terminationTimeout) 592daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch , m_terminationCounter(0) 602daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch , m_terminationTimer(RunLoop::main(), this, &ChildProcess::terminationTimerFired) 612daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch{ 622daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // FIXME: The termination timer should not be scheduled on the main run loop. 632daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // It won't work with the threaded mode, but it's not really useful anyway as is. 6465f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch} 65d0825bca7fe65beaee391d30da42e937db621564Steve Block 6665f03d4f644ce73618e5f4f50dd694b26f55ae12Ben MurdochChildProcess::~ChildProcess() 6765f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch{ 6865f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch} 69f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 702daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdochvoid ChildProcess::terminationTimerFired() 712daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch{ 722daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch if (!shouldTerminate()) 732daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch return; 742daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 752daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch terminate(); 762daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch} 772daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 782daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdochvoid ChildProcess::terminate() 792daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch{ 802daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch RunLoop::main()->stop(); 812daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch} 822daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 8365f03d4f644ce73618e5f4f50dd694b26f55ae12Ben MurdochNO_RETURN static void watchdogCallback() 8465f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch{ 8565f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch // We use _exit here since the watchdog callback is called from another thread and we don't want 8665f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch // global destructors or atexit handlers to be called from this thread while the main thread is busy 8765f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch // doing its thing. 8865f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch _exit(EXIT_FAILURE); 8965f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch} 90d0825bca7fe65beaee391d30da42e937db621564Steve Block 912fc2651226baac27029e38c9d6ef883fa32084dbSteve Blockvoid ChildProcess::didCloseOnConnectionWorkQueue(WorkQueue& workQueue, CoreIPC::Connection*) 9265f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch{ 9365f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch // If the connection has been closed and we haven't responded in the main thread for 10 seconds 9465f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch // the process will exit forcibly. 9565f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch static const double watchdogDelay = 10.0; 9665f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 972fc2651226baac27029e38c9d6ef883fa32084dbSteve Block workQueue.scheduleWorkAfterDelay(WorkItem::create(watchdogCallback), watchdogDelay); 9865f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch} 9965f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch 10065f03d4f644ce73618e5f4f50dd694b26f55ae12Ben Murdoch} // namespace WebKit 101