/*

 * 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 "ProcessLauncher.h"

#include "Connection.h"

#include "RunLoop.h"

#include "WebProcess.h"

#include <WebCore/PlatformString.h>

#include <runtime/InitializeThreading.h>

#include <wtf/Threading.h>

using namespace WebCore;

namespace WebKit {

void ProcessLauncher::launchProcess()

{

    // First, create the server and client identifiers.

    HANDLE serverIdentifier, clientIdentifier;

    if (!CoreIPC::Connection::createServerAndClientIdentifiers(serverIdentifier, clientIdentifier)) {

        // FIXME: What should we do here?

        ASSERT_NOT_REACHED();

    }

    // Ensure that the child process inherits the client identifier.

    ::SetHandleInformation(clientIdentifier, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);

    Vector<UChar> commandLineVector;

    // FIXME: We would like to pass a full path to the .exe here.

#ifndef DEBUG_ALL

    String commandLine(L"WebKit2WebProcess.exe");

#else

    String commandLine(L"WebKit2WebProcess_debug.exe");

#endif

    append(commandLineVector, commandLine);

    append(commandLineVector, " -mode webprocess");

    append(commandLineVector, " -clientIdentifier ");

    append(commandLineVector, String::number(reinterpret_cast<uintptr_t>(clientIdentifier)));

    commandLineVector.append('\0');

    STARTUPINFO startupInfo = { 0 };

    startupInfo.cb = sizeof(startupInfo);

    PROCESS_INFORMATION processInformation = { 0 };

    BOOL result = ::CreateProcessW(0, commandLineVector.data(), 0, 0, true, 0, 0, 0, &startupInfo, &processInformation);

    // We can now close the client identifier handle.

    ::CloseHandle(clientIdentifier);

    if (!result) {

        // FIXME: What should we do here?

        DWORD error = ::GetLastError();

        ASSERT_NOT_REACHED();

    }

    // Don't leak the thread handle.

    ::CloseHandle(processInformation.hThread);

    // We've finished launching the process, message back to the run loop.

    RunLoop::main()->scheduleWork(WorkItem::create(this, &ProcessLauncher::didFinishLaunchingProcess, processInformation.hProcess, serverIdentifier));

}

void ProcessLauncher::terminateProcess()

{

    if (!m_processIdentifier)

        return;

    ::TerminateProcess(m_processIdentifier, 0);

}

static void* webThreadBody(void* context)

{

    HANDLE clientIdentifier = reinterpret_cast<HANDLE>(context);

    // Initialization

    JSC::initializeThreading();

    WTF::initializeMainThread();

    WebProcess::shared().initialize(clientIdentifier, RunLoop::current());

    RunLoop::run();

    return 0;

}

CoreIPC::Connection::Identifier ProcessLauncher::createWebThread()

{

    // First, create the server and client identifiers.

    HANDLE serverIdentifier, clientIdentifier;

    if (!CoreIPC::Connection::createServerAndClientIdentifiers(serverIdentifier, clientIdentifier)) {

        // FIXME: What should we do here?

        ASSERT_NOT_REACHED();

    }

    if (!createThread(webThreadBody, reinterpret_cast<void*>(clientIdentifier), "WebKit2: WebThread")) {

        ::CloseHandle(serverIdentifier);

        ::CloseHandle(clientIdentifier);

        return 0;

    }

    return serverIdentifier;

}

} // namespace WebKit