/*
 * Copyright (C) 2010 University of Szeged. 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 "CrashHandler.h"

#include "MappedMemoryPool.h"
#include <csignal>
#include <cstdlib>
#include <wtf/AlwaysInline.h>

namespace WebKit {

CrashHandler* CrashHandler::theInstance = 0;

CrashHandler::CrashHandler()
    : m_inDeleteObjects(false)
{
    signal(SIGABRT, &CrashHandler::signalHandler);
    signal(SIGBUS, &CrashHandler::signalHandler);
    signal(SIGILL, &CrashHandler::signalHandler);
    signal(SIGINT, &CrashHandler::signalHandler);
    signal(SIGFPE, &CrashHandler::signalHandler);
    signal(SIGQUIT, &CrashHandler::signalHandler);
    signal(SIGSEGV, &CrashHandler::signalHandler);
    signal(SIGTRAP, &CrashHandler::signalHandler);
}

NO_RETURN void CrashHandler::signalHandler(int)
{
    CrashHandler::theInstance->deleteObjects();
    exit(EXIT_FAILURE);
}

void CrashHandler::deleteObjects()
{
    m_inDeleteObjects = true;
    qDeleteAll(m_objects);

    MappedMemoryPool::instance()->clear();
}

} // namespace WebKit