genericworkertask.h

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

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 * modification, are permitted provided that the following conditions are
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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));