/*
 * 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.
 */

#ifndef WebProcessLauncher_h
#define WebProcessLauncher_h

#include "Connection.h"
#include "PlatformProcessIdentifier.h"
#include <wtf/RefPtr.h>
#include <wtf/Threading.h>

#ifndef NDEBUG
#include <wtf/text/WTFString.h>
#endif

namespace WebKit {

class ProcessLauncher : public ThreadSafeRefCounted<ProcessLauncher> {
public:
    class Client {
    public:
        virtual ~Client() { }
        
        virtual void didFinishLaunching(ProcessLauncher*, CoreIPC::Connection::Identifier) = 0;
    };
    
    enum ProcessType {
        WebProcess,
        PluginProcess
    };

    struct LaunchOptions {
        ProcessType processType;
#if PLATFORM(MAC)
        static const cpu_type_t MatchCurrentArchitecture = 0;
        cpu_type_t architecture;
        bool executableHeap;
#if HAVE(XPC)
        bool useXPC;
#endif
#endif
#ifndef NDEBUG
        String processCmdPrefix;
#endif
    };

    static PassRefPtr<ProcessLauncher> create(Client* client, const LaunchOptions& launchOptions)
    {
        return adoptRef(new ProcessLauncher(client, launchOptions));
    }

    bool isLaunching() const { return m_isLaunching; }
    PlatformProcessIdentifier processIdentifier() const { return m_processIdentifier; }

    void terminateProcess();
    void invalidate();

    static bool getProcessTypeFromString(const char*, ProcessType&);
    static const char* processTypeAsString(ProcessType);

private:
    ProcessLauncher(Client*, const LaunchOptions& launchOptions);

    void launchProcess();
    void didFinishLaunchingProcess(PlatformProcessIdentifier, CoreIPC::Connection::Identifier);

    void platformInvalidate();

    Client* m_client;

    const LaunchOptions m_launchOptions;
    bool m_isLaunching;
    PlatformProcessIdentifier m_processIdentifier;
};

} // namespace WebKit

#endif // WebProcessLauncher_h
