GenericWorkerTask.h   [plain text]

/*
 * Copyright (C) 2009 Google 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 * OWNER OR 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,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 */

#ifndef GenericWorkerTask_h
#define GenericWorkerTask_h

#if ENABLE(WORKERS)

#include "CrossThreadCopier.h"
#include "ScriptExecutionContext.h"
#include <memory>
#include <wtf/PassRefPtr.h>
#include <wtf/TypeTraits.h>

namespace WebCore {

    // Traits for the GenericWorkerTask.
    template<typename T> struct GenericWorkerTaskTraits {
        typedef const T& ParamType;
    };

    template<typename T> struct GenericWorkerTaskTraits<T*> {
        typedef T* ParamType;
    };

    template<typename T> struct GenericWorkerTaskTraits<std::auto_ptr<T> > {
        typedef std::auto_ptr<T> ParamType;
    };

    template<typename T> struct GenericWorkerTaskTraits<PassRefPtr<T> > {
        typedef PassRefPtr<T> ParamType;
    };

    template<typename P1, typename MP1>
    class GenericWorkerTask1 : public ScriptExecutionContext::Task {
    public:
        typedef void (*Method)(ScriptExecutionContext*, MP1);
        typedef GenericWorkerTask1<P1, MP1> GenericWorkerTask;
        typedef typename GenericWorkerTaskTraits<P1>::ParamType Param1;

        static PassRefPtr<GenericWorkerTask> create(Method method, Param1 parameter1)
        {
            return adoptRef(new GenericWorkerTask(method, parameter1));
        }

    private:
        GenericWorkerTask1(Method method, Param1 parameter1)
            : m_method(method)
            , m_parameter1(parameter1)
        {
        }

        virtual void performTask(ScriptExecutionContext* context)
        {
            (*m_method)(context, m_parameter1);
        }

    private:
        Method m_method;
        P1 m_parameter1;
    };

    template<typename P1, typename MP1, typename P2, typename MP2>
    class GenericWorkerTask2 : public ScriptExecutionContext::Task {
    public:
        typedef void (*Method)(ScriptExecutionContext*, MP1, MP2);
        typedef GenericWorkerTask2<P1, MP1, P2, MP2> GenericWorkerTask;
        typedef typename GenericWorkerTaskTraits<P1>::ParamType Param1;
        typedef typename GenericWorkerTaskTraits<P2>::ParamType Param2;

        static PassRefPtr<GenericWorkerTask> create(Method method, Param1 parameter1, Param2 parameter2)
        {
            return adoptRef(new GenericWorkerTask(method, parameter1, parameter2));
        }

    private:
        GenericWorkerTask2(Method method, Param1 parameter1, Param2 parameter2)
            : m_method(method)
            , m_parameter1(parameter1)
            , m_parameter2(parameter2)
        {
        }

        virtual void performTask(ScriptExecutionContext* context)
        {
            (*m_method)(context, m_parameter1, m_parameter2);
        }

    private:
        Method m_method;
        P1 m_parameter1;
        P2 m_parameter2;
    };

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3>
    class GenericWorkerTask3 : public ScriptExecutionContext::Task {
    public:
        typedef void (*Method)(ScriptExecutionContext*, MP1, MP2, MP3);
        typedef GenericWorkerTask3<P1, MP1, P2, MP2, P3, MP3> GenericWorkerTask;
        typedef typename GenericWorkerTaskTraits<P1>::ParamType Param1;
        typedef typename GenericWorkerTaskTraits<P2>::ParamType Param2;
        typedef typename GenericWorkerTaskTraits<P3>::ParamType Param3;

        static PassRefPtr<GenericWorkerTask> create(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3)
        {
            return adoptRef(new GenericWorkerTask(method, parameter1, parameter2, parameter3));
        }

    private:
        GenericWorkerTask3(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3)
            : m_method(method)
            , m_parameter1(parameter1)
            , m_parameter2(parameter2)
            , m_parameter3(parameter3)
        {
        }

        virtual void performTask(ScriptExecutionContext* context)
        {
            (*m_method)(context, m_parameter1, m_parameter2, m_parameter3);
        }

    private:
        Method m_method;
        P1 m_parameter1;
        P2 m_parameter2;
        P3 m_parameter3;
    };

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4>
    class GenericWorkerTask4 : public ScriptExecutionContext::Task {
    public:
        typedef void (*Method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4);
        typedef GenericWorkerTask4<P1, MP1, P2, MP2, P3, MP3, P4, MP4> GenericWorkerTask;
        typedef typename GenericWorkerTaskTraits<P1>::ParamType Param1;
        typedef typename GenericWorkerTaskTraits<P2>::ParamType Param2;
        typedef typename GenericWorkerTaskTraits<P3>::ParamType Param3;
        typedef typename GenericWorkerTaskTraits<P4>::ParamType Param4;

        static PassRefPtr<GenericWorkerTask> create(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3, Param4 parameter4)
        {
            return adoptRef(new GenericWorkerTask(method, parameter1, parameter2, parameter3, parameter4));
        }

    private:
        GenericWorkerTask4(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3, Param4 parameter4)
            : m_method(method)
            , m_parameter1(parameter1)
            , m_parameter2(parameter2)
            , m_parameter3(parameter3)
            , m_parameter4(parameter4)
        {
        }

        virtual void performTask(ScriptExecutionContext* context)
        {
            (*m_method)(context, m_parameter1, m_parameter2, m_parameter3, m_parameter4);
        }

    private:
        Method m_method;
        P1 m_parameter1;
        P2 m_parameter2;
        P3 m_parameter3;
        P4 m_parameter4;
    };

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4, typename P5, typename MP5>
    class GenericWorkerTask5 : public ScriptExecutionContext::Task {
    public:
        typedef void (*Method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4, MP5);
        typedef GenericWorkerTask5<P1, MP1, P2, MP2, P3, MP3, P4, MP4, P5, MP5> GenericWorkerTask;
        typedef typename GenericWorkerTaskTraits<P1>::ParamType Param1;
        typedef typename GenericWorkerTaskTraits<P2>::ParamType Param2;
        typedef typename GenericWorkerTaskTraits<P3>::ParamType Param3;
        typedef typename GenericWorkerTaskTraits<P4>::ParamType Param4;
        typedef typename GenericWorkerTaskTraits<P5>::ParamType Param5;

        static PassRefPtr<GenericWorkerTask> create(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3, Param4 parameter4, Param5 parameter5)
        {
            return adoptRef(new GenericWorkerTask(method, parameter1, parameter2, parameter3, parameter4, parameter5));
        }

    private:
        GenericWorkerTask5(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3, Param4 parameter4, Param5 parameter5)
            : m_method(method)
            , m_parameter1(parameter1)
            , m_parameter2(parameter2)
            , m_parameter3(parameter3)
            , m_parameter4(parameter4)
            , m_parameter5(parameter5)
        {
        }

        virtual void performTask(ScriptExecutionContext* context)
        {
            (*m_method)(context, m_parameter1, m_parameter2, m_parameter3, m_parameter4, m_parameter5);
        }

    private:
        Method m_method;
        P1 m_parameter1;
        P2 m_parameter2;
        P3 m_parameter3;
        P4 m_parameter4;
        P5 m_parameter5;
    };

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4, typename P5, typename MP5, typename P6, typename MP6>
    class GenericWorkerTask6 : public ScriptExecutionContext::Task {
    public:
        typedef void (*Method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4, MP5, MP6);
        typedef GenericWorkerTask6<P1, MP1, P2, MP2, P3, MP3, P4, MP4, P5, MP5, P6, MP6> GenericWorkerTask;
        typedef typename GenericWorkerTaskTraits<P1>::ParamType Param1;
        typedef typename GenericWorkerTaskTraits<P2>::ParamType Param2;
        typedef typename GenericWorkerTaskTraits<P3>::ParamType Param3;
        typedef typename GenericWorkerTaskTraits<P4>::ParamType Param4;
        typedef typename GenericWorkerTaskTraits<P5>::ParamType Param5;
        typedef typename GenericWorkerTaskTraits<P6>::ParamType Param6;

        static PassRefPtr<GenericWorkerTask> create(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3, Param4 parameter4, Param5 parameter5, Param6 parameter6)
        {
            return adoptRef(new GenericWorkerTask(method, parameter1, parameter2, parameter3, parameter4, parameter5, parameter6));
        }

    private:
        GenericWorkerTask6(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3, Param4 parameter4, Param5 parameter5, Param6 parameter6)
            : m_method(method)
            , m_parameter1(parameter1)
            , m_parameter2(parameter2)
            , m_parameter3(parameter3)
            , m_parameter4(parameter4)
            , m_parameter5(parameter5)
            , m_parameter6(parameter6)
        {
        }

        virtual void performTask(ScriptExecutionContext* context)
        {
            (*m_method)(context, m_parameter1, m_parameter2, m_parameter3, m_parameter4, m_parameter5, m_parameter6);
        }

    private:
        Method m_method;
        P1 m_parameter1;
        P2 m_parameter2;
        P3 m_parameter3;
        P4 m_parameter4;
        P5 m_parameter5;
        P6 m_parameter6;
    };

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4, typename P5, typename MP5, typename P6, typename MP6, typename P7, typename MP7>
    class GenericWorkerTask7 : public ScriptExecutionContext::Task {
    public:
        typedef void (*Method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4, MP5, MP6, MP7);
        typedef GenericWorkerTask7<P1, MP1, P2, MP2, P3, MP3, P4, MP4, P5, MP5, P6, MP6, P7, MP7> GenericWorkerTask;
        typedef typename GenericWorkerTaskTraits<P1>::ParamType Param1;
        typedef typename GenericWorkerTaskTraits<P2>::ParamType Param2;
        typedef typename GenericWorkerTaskTraits<P3>::ParamType Param3;
        typedef typename GenericWorkerTaskTraits<P4>::ParamType Param4;
        typedef typename GenericWorkerTaskTraits<P5>::ParamType Param5;
        typedef typename GenericWorkerTaskTraits<P6>::ParamType Param6;
        typedef typename GenericWorkerTaskTraits<P7>::ParamType Param7;

        static PassRefPtr<GenericWorkerTask> create(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3, Param4 parameter4, Param5 parameter5, Param6 parameter6, Param7 parameter7)
        {
            return adoptRef(new GenericWorkerTask(method, parameter1, parameter2, parameter3, parameter4, parameter5, parameter6, parameter7));
        }

    private:
        GenericWorkerTask7(Method method, Param1 parameter1, Param2 parameter2, Param3 parameter3, Param4 parameter4, Param5 parameter5, Param6 parameter6, Param7 parameter7)
            : m_method(method)
            , m_parameter1(parameter1)
            , m_parameter2(parameter2)
            , m_parameter3(parameter3)
            , m_parameter4(parameter4)
            , m_parameter5(parameter5)
            , m_parameter6(parameter6)
            , m_parameter7(parameter7)
        {
        }

        virtual void performTask(ScriptExecutionContext* context)
        {
            (*m_method)(context, m_parameter1, m_parameter2, m_parameter3, m_parameter4, m_parameter5, m_parameter6, m_parameter7);
        }

    private:
        Method m_method;
        P1 m_parameter1;
        P2 m_parameter2;
        P3 m_parameter3;
        P4 m_parameter4;
        P5 m_parameter5;
        P6 m_parameter6;
        P7 m_parameter7;
    };

    template<typename P1, typename MP1>
    PassRefPtr<ScriptExecutionContext::Task> createCallbackTask(
        void (*method)(ScriptExecutionContext*, MP1),
        const P1& parameter1)
    {
        return GenericWorkerTask1<typename CrossThreadCopier<P1>::Type, MP1>::create(
            method,
            CrossThreadCopier<P1>::copy(parameter1));
    }

    template<typename P1, typename MP1, typename P2, typename MP2>
    PassRefPtr<ScriptExecutionContext::Task> createCallbackTask(
        void (*method)(ScriptExecutionContext*, MP1, MP2),
        const P1& parameter1, const P2& parameter2)
    {
        return GenericWorkerTask2<typename CrossThreadCopier<P1>::Type, MP1, typename CrossThreadCopier<P2>::Type, MP2>::create(
            method,
            CrossThreadCopier<P1>::copy(parameter1), CrossThreadCopier<P2>::copy(parameter2));
    }

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3>
    PassRefPtr<ScriptExecutionContext::Task> createCallbackTask(
        void (*method)(ScriptExecutionContext*, MP1, MP2, MP3),
        const P1& parameter1, const P2& parameter2, const P3& parameter3)
    {
        return GenericWorkerTask3<typename CrossThreadCopier<P1>::Type, MP1, typename CrossThreadCopier<P2>::Type, MP2, typename CrossThreadCopier<P3>::Type, MP3>::create(
            method,
            CrossThreadCopier<P1>::copy(parameter1), CrossThreadCopier<P2>::copy(parameter2),
            CrossThreadCopier<P3>::copy(parameter3));
    }

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4>
    PassRefPtr<ScriptExecutionContext::Task> createCallbackTask(
        void (*method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4),
        const P1& parameter1, const P2& parameter2, const P3& parameter3, const P4& parameter4)
    {
        return GenericWorkerTask4<typename CrossThreadCopier<P1>::Type, MP1, typename CrossThreadCopier<P2>::Type, MP2, typename CrossThreadCopier<P3>::Type, MP3,
            typename CrossThreadCopier<P4>::Type, MP4>::create(
                method,
                CrossThreadCopier<P1>::copy(parameter1), CrossThreadCopier<P2>::copy(parameter2),
                CrossThreadCopier<P3>::copy(parameter3), CrossThreadCopier<P4>::copy(parameter4));
    }

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4, typename P5, typename MP5>
    PassRefPtr<ScriptExecutionContext::Task> createCallbackTask(
        void (*method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4, MP5),
        const P1& parameter1, const P2& parameter2, const P3& parameter3, const P4& parameter4, const P5& parameter5)
    {
        return GenericWorkerTask5<typename CrossThreadCopier<P1>::Type, MP1, typename CrossThreadCopier<P2>::Type, MP2, typename CrossThreadCopier<P3>::Type, MP3,
            typename CrossThreadCopier<P4>::Type, MP4, typename CrossThreadCopier<P5>::Type, MP5>::create(
                method,
                CrossThreadCopier<P1>::copy(parameter1), CrossThreadCopier<P2>::copy(parameter2),
                CrossThreadCopier<P3>::copy(parameter3), CrossThreadCopier<P4>::copy(parameter4),
                CrossThreadCopier<P5>::copy(parameter5));
    }

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4, typename P5, typename MP5, typename P6, typename MP6>
    PassRefPtr<ScriptExecutionContext::Task> createCallbackTask(
        void (*method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4, MP5, MP6),
        const P1& parameter1, const P2& parameter2, const P3& parameter3, const P4& parameter4, const P5& parameter5, const P6& parameter6)
    {
        return GenericWorkerTask6<typename CrossThreadCopier<P1>::Type, MP1, typename CrossThreadCopier<P2>::Type, MP2, typename CrossThreadCopier<P3>::Type, MP3,
            typename CrossThreadCopier<P4>::Type, MP4, typename CrossThreadCopier<P5>::Type, MP5, typename CrossThreadCopier<P6>::Type, MP6>::create(
                method,
                CrossThreadCopier<P1>::copy(parameter1), CrossThreadCopier<P2>::copy(parameter2),
                CrossThreadCopier<P3>::copy(parameter3), CrossThreadCopier<P4>::copy(parameter4),
                CrossThreadCopier<P5>::copy(parameter5), CrossThreadCopier<P6>::copy(parameter6));
    }

    template<typename P1, typename MP1, typename P2, typename MP2, typename P3, typename MP3, typename P4, typename MP4, typename P5, typename MP5, typename P6, typename MP6, typename P7, typename MP7>
    PassRefPtr<ScriptExecutionContext::Task> createCallbackTask(
        void (*method)(ScriptExecutionContext*, MP1, MP2, MP3, MP4, MP5, MP6, MP7),
        const P1& parameter1, const P2& parameter2, const P3& parameter3, const P4& parameter4, const P5& parameter5, const P6& parameter6, const P7& parameter7)
    {
        return GenericWorkerTask7<typename CrossThreadCopier<P1>::Type, MP1, typename CrossThreadCopier<P2>::Type, MP2, typename CrossThreadCopier<P3>::Type, MP3,
            typename CrossThreadCopier<P4>::Type, MP4, typename CrossThreadCopier<P5>::Type, MP5, typename CrossThreadCopier<P6>::Type, MP6,
            typename CrossThreadCopier<P7>::Type, MP7>::create(
                method,
                CrossThreadCopier<P1>::copy(parameter1), CrossThreadCopier<P2>::copy(parameter2),
                CrossThreadCopier<P3>::copy(parameter3), CrossThreadCopier<P4>::copy(parameter4),
                CrossThreadCopier<P5>::copy(parameter5), CrossThreadCopier<P6>::copy(parameter6),
                CrossThreadCopier<P7>::copy(parameter7));
    }

} // namespace WebCore

#endif // ENABLE(WORKERS)

#endif // GenericWorkerTask_h