Source/WebKit/WebProcess/WebPage/WebInspectorInterruptDispatcher.cpp

/*
 * Copyright (C) 2017 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 "WebInspectorInterruptDispatcher.h"

#include "WebInspectorInterruptDispatcherMessages.h"
#include <JavaScriptCore/VM.h>
#include <WebCore/CommonVM.h>
#include <wtf/WorkQueue.h>

namespace WebKit {

Ref<WebInspectorInterruptDispatcher> WebInspectorInterruptDispatcher::create()
{
    return adoptRef(*new WebInspectorInterruptDispatcher);
}

WebInspectorInterruptDispatcher::WebInspectorInterruptDispatcher()
    : m_queue(WorkQueue::create("com.apple.WebKit.WebInspectorInterruptDispatcher"))
{
}

WebInspectorInterruptDispatcher::~WebInspectorInterruptDispatcher()
{
}

void WebInspectorInterruptDispatcher::initializeConnection(IPC::Connection* connection)
{
    connection->addWorkQueueMessageReceiver(Messages::WebInspectorInterruptDispatcher::messageReceiverName(), m_queue.get(), this);
}

void WebInspectorInterruptDispatcher::notifyNeedDebuggerBreak()
{
    // If the web process has not been fully initialized yet, then there
    // is no VM to be notified and thus no infinite loop to break. Bail out.
    if (!WebCore::commonVMOrNull())
        return;

    JSC::VM& vm = WebCore::commonVM();
    vm.notifyNeedDebuggerBreak();
}

} // namespace WebKit