异步线程任务封装

来源:互联网 发布:树莓派 linux游戏 编辑:程序博客网 时间:2024/05/16 03:28

异步线程任务封装可以参考Chrome中Callback和tuple实现。

Callback.h

#ifndef __callback_h__#define __callback_h__#pragma once#include "base/tuple.h"#include "raw_scoped_refptr_mismatch_checker.h"// Callback跟Task很像, 但没有参数限制, 实质上是面向对象的函数指针.//// Callbacks被设计和Tuples共同工作. 有一系列的辅助函数和类用于对使用者隐藏// Tuple的细节. 用户代码只需要和CallbackRunner基类打交道, CallbackRunner只// 有Run方法, 通过New*函数创建. 这样用户不必关心哪个类实现了回调, 只需要知// 道参数个数以及类型.//// 这些实现是通过CallbackImpl完成的, CallbackImpl派生自CallbackStorage, 具体// 的存储类型对用户透明, 用户只需要调用即可.//// 注意callbacks目前不能取消或者放弃自己的操作, 现在是在上层进行处理的.// callback中的指针在调用结束前都必须是有效的.//// 类似Task, 一旦回调执行结束, 回调执行者负责删除回调指针.//// 客户端用法示例://     void Object::DoStuff(int, string);//     Callback2<int, string>::Type* callback =//       NewCallback(obj, &Object::DoStuff);//     callback->Run(5, string("hello"));//     delete callback;// 或者直接使用元组://     CallbackRunner<Tuple2<int, string> >* callback =//       NewCallback(obj, &Object::DoStuff);//     callback->RunWithParams(MakeTuple(5, string("hello")));//// 有一个不带参数有返回值的版本. 示例://     int Object::GetNextInt();//     CallbackWithReturnValue<int>::Type* callback =//       NewCallbackWithReturnValue(obj, &Object::GetNextInt);//     int next_int = callback->Run();//     delete callback;// 所有Callbacks的基类, 存储对象方法指针.template<class T, typename Method>class CallbackStorage{public:    CallbackStorage(T* obj, Method meth) : obj_(obj), meth_(meth) {}protected:    T* obj_;    Method meth_;};// Interface that is exposed to the consumer, that does the actual calling// of the method.template<typename Params>class CallbackRunner{public:    typedef Params TupleType;    virtual ~CallbackRunner() {}    virtual void RunWithParams(const Params& params) = 0;    // Convenience functions so callers don't have to deal with Tuples.    inline void Run()    {        RunWithParams(Tuple0());    }    template<typename Arg1>    inline void Run(const Arg1& a)    {        RunWithParams(Params(a));    }    template<typename Arg1, typename Arg2>    inline void Run(const Arg1& a, const Arg2& b)    {        RunWithParams(Params(a, b));    }    template<typename Arg1, typename Arg2, typename Arg3>    inline void Run(const Arg1& a, const Arg2& b, const Arg3& c)    {        RunWithParams(Params(a, b, c));    }    template<typename Arg1, typename Arg2, typename Arg3, typename Arg4>    inline void Run(const Arg1& a, const Arg2& b, const Arg3& c, const Arg4& d)    {        RunWithParams(Params(a, b, c, d));    }    template<typename Arg1, typename Arg2, typename Arg3,        typename Arg4, typename Arg5>        inline void Run(const Arg1& a, const Arg2& b, const Arg3& c,        const Arg4& d, const Arg5& e)    {        RunWithParams(Params(a, b, c, d, e));    }};template<class T, typename Method, typename Params>class CallbackImpl : public CallbackStorage<T, Method>,    public CallbackRunner<Params>{public:    CallbackImpl(T* obj, Method meth) : CallbackStorage<T, Method>(obj, meth) {}    virtual void RunWithParams(const Params& params)    {        // use "this->" to force C++ to look inside our templatized base class; see        // Effective C++, 3rd Ed, item 43, p210 for details.        DispatchToMethod(this->obj_, this->meth_, params);    }};// 0-arg implementationstruct Callback0{    typedef CallbackRunner<Tuple0> Type;};template<class T>typename Callback0::Type* NewCallback(T* object, void (T::*method)()){    return new CallbackImpl<T, void (T::*)(), Tuple0 >(object, method);}// 1-arg implementationtemplate<typename Arg1>struct Callback1{    typedef CallbackRunner<Tuple1<Arg1> > Type;};template<class T, typename Arg1>typename Callback1<Arg1>::Type* NewCallback(T* object, void (T::*method)(Arg1)){    return new CallbackImpl<T, void (T::*)(Arg1), Tuple1<Arg1> >(object, method);}// 2-arg implementationtemplate<typename Arg1, typename Arg2>struct Callback2{    typedef CallbackRunner<Tuple2<Arg1, Arg2> > Type;};template<class T, typename Arg1, typename Arg2>typename Callback2<Arg1, Arg2>::Type* NewCallback(    T* object, void (T::*method)(Arg1, Arg2)){    return new CallbackImpl<T, void (T::*)(Arg1, Arg2),        Tuple2<Arg1, Arg2> >(object, method);}// 3-arg implementationtemplate<typename Arg1, typename Arg2, typename Arg3>struct Callback3{    typedef CallbackRunner<Tuple3<Arg1, Arg2, Arg3> > Type;};template<class T, typename Arg1, typename Arg2, typename Arg3>typename Callback3<Arg1, Arg2, Arg3>::Type* NewCallback(    T* object, void (T::*method)(Arg1, Arg2, Arg3)){    return new CallbackImpl<T,  void (T::*)(Arg1, Arg2, Arg3),        Tuple3<Arg1, Arg2, Arg3> >(object, method);}// 4-arg implementationtemplate<typename Arg1, typename Arg2, typename Arg3, typename Arg4>struct Callback4{    typedef CallbackRunner<Tuple4<Arg1, Arg2, Arg3, Arg4> > Type;};template<class T, typename Arg1, typename Arg2, typename Arg3, typename Arg4>typename Callback4<Arg1, Arg2, Arg3, Arg4>::Type* NewCallback(    T* object, void (T::*method)(Arg1, Arg2, Arg3, Arg4)){    return new CallbackImpl<T, void (T::*)(Arg1, Arg2, Arg3, Arg4),        Tuple4<Arg1, Arg2, Arg3, Arg4> >(object, method);}// 5-arg implementationtemplate<typename Arg1, typename Arg2, typename Arg3,typename Arg4, typename Arg5>struct Callback5{    typedef CallbackRunner<Tuple5<Arg1, Arg2, Arg3, Arg4, Arg5> > Type;};template<class T, typename Arg1, typename Arg2,typename Arg3, typename Arg4, typename Arg5>typename Callback5<Arg1, Arg2, Arg3, Arg4, Arg5>::Type* NewCallback(    T* object, void (T::*method)(Arg1, Arg2, Arg3, Arg4, Arg5)){    return new CallbackImpl<T, void (T::*)(Arg1, Arg2, Arg3, Arg4, Arg5),        Tuple5<Arg1, Arg2, Arg3, Arg4, Arg5> >(object, method);}// An UnboundMethod is a wrapper for a method where the actual object is// provided at Run dispatch time.template<class T, class Method, class Params>class UnboundMethod{public:    UnboundMethod(Method m, const Params& p) : m_(m), p_(p)    {        COMPILE_ASSERT((MethodUsesScopedRefptrCorrectly<Method, Params>::value),            badunboundmethodparams);    }    void Run(T* obj) const    {        DispatchToMethod(obj, m_, p_);    }private:    Method m_;    Params p_;};// 无参数带返回值版本.template<typename ReturnValue>struct CallbackWithReturnValue{    class Type    {    public:        virtual ~Type() {}        virtual ReturnValue Run() = 0;    };};template<class T, typename Method, typename ReturnValue>class CallbackWithReturnValueImpl : public CallbackStorage<T, Method>,    public CallbackWithReturnValue<ReturnValue>::Type{public:    CallbackWithReturnValueImpl(T* obj, Method meth)        : CallbackStorage<T, Method>(obj, meth) {}    virtual ReturnValue Run()    {        return (this->obj_->*(this->meth_))();    }protected:    virtual ~CallbackWithReturnValueImpl() {}};template<class T, typename ReturnValue>typename CallbackWithReturnValue<ReturnValue>::Type*NewCallbackWithReturnValue(T* object, ReturnValue (T::*method)()){    return new CallbackWithReturnValueImpl<T, ReturnValue (T::*)(),        ReturnValue>(object, method);}#endif //__callback_h__


chrome自己实现tuple

#ifndef __tuple_h__#define __tuple_h__#pragma once// 元组(Tuple)是一种概念上与std::pair类似的通用模板容器.// Tuple0到Tuple6对应容器中元素个数. 带有0-6个参数的MakeTuple()函数能够方便// 的构造对应的元组对象. DispatchToMethod和DispatchToFunction带有函数指针或// 者对象实例和成员函数指针, 解包元组为参数进行函数调用.//// 元组的元素通过值拷贝存储.//// 用法示例://     // These two methods of creating a Tuple are identical.//     Tuple2<int, const char*> tuple_a(1, "wee");//     Tuple2<int, const char*> tuple_b = MakeTuple(1, "wee");////     void SomeFunc(int a, const char* b) {}//     DispatchToFunction(&SomeFunc, tuple_a); // SomeFunc(1, "wee")//     DispatchToFunction(//       &SomeFunc, MakeTuple(10, "foo")); // SomeFunc(10, "foo")////     struct { void SomeMeth(int a, int b, int c) {} } foo;//     DispatchToMethod(&foo, &Foo::SomeMeth, MakeTuple(1, 2, 3));//     //foo->SomeMeth(1, 2, 3);// Traits ----------------------------------------------------------------------//// A simple traits class for tuple arguments.//// ValueType: the bare, nonref version of a type (same as the type for nonrefs).// RefType: the ref version of a type (same as the type for refs).// ParamType: what type to pass to functions (refs should not be constified).template<class P>struct TupleTraits{    typedef P ValueType;    typedef P& RefType;    typedef const P& ParamType;};template<class P>struct TupleTraits<P&>{    typedef P ValueType;    typedef P& RefType;    typedef P& ParamType;};template<class P>struct TupleTypes {};// Tuple -----------------------------------------------------------------------//// This set of classes is useful for bundling 0 or more heterogeneous data types// into a single variable.  The advantage of this is that it greatly simplifies// function objects that need to take an arbitrary number of parameters; see// RunnableMethod and IPC::MessageWithTuple.//// Tuple0 is supplied to act as a 'void' type.  It can be used, for example,// when dispatching to a function that accepts no arguments (see the// Dispatchers below).// Tuple1<A> is rarely useful.  One such use is when A is non-const ref that you// want filled by the dispatchee, and the tuple is merely a container for that// output (a "tier").  See MakeRefTuple and its usages.struct Tuple0{    typedef Tuple0 ValueTuple;    typedef Tuple0 RefTuple;    typedef Tuple0 ParamTuple;};template<class A>struct Tuple1{public:    typedef A TypeA;    Tuple1() {}    explicit Tuple1(typename TupleTraits<A>::ParamType a) : a(a) {}    A a;};template<class A, class B>struct Tuple2{public:    typedef A TypeA;    typedef B TypeB;    Tuple2() {}    Tuple2(typename TupleTraits<A>::ParamType a,        typename TupleTraits<B>::ParamType b)        : a(a), b(b) {}    A a;    B b;};template<class A, class B, class C>struct Tuple3{public:    typedef A TypeA;    typedef B TypeB;    typedef C TypeC;    Tuple3() {}    Tuple3(typename TupleTraits<A>::ParamType a,        typename TupleTraits<B>::ParamType b,        typename TupleTraits<C>::ParamType c)        : a(a), b(b), c(c){}    A a;    B b;    C c;};template<class A, class B, class C, class D>struct Tuple4{public:    typedef A TypeA;    typedef B TypeB;    typedef C TypeC;    typedef D TypeD;    Tuple4() {}    Tuple4(typename TupleTraits<A>::ParamType a,        typename TupleTraits<B>::ParamType b,        typename TupleTraits<C>::ParamType c,        typename TupleTraits<D>::ParamType d)        : a(a), b(b), c(c), d(d) {}    A a;    B b;    C c;    D d;};template<class A, class B, class C, class D, class E>struct Tuple5{public:    typedef A TypeA;    typedef B TypeB;    typedef C TypeC;    typedef D TypeD;    typedef E TypeE;    Tuple5() {}    Tuple5(typename TupleTraits<A>::ParamType a,        typename TupleTraits<B>::ParamType b,        typename TupleTraits<C>::ParamType c,        typename TupleTraits<D>::ParamType d,        typename TupleTraits<E>::ParamType e)        : a(a), b(b), c(c), d(d), e(e) {}    A a;    B b;    C c;    D d;    E e;};template<class A, class B, class C, class D, class E, class F>struct Tuple6{public:    typedef A TypeA;    typedef B TypeB;    typedef C TypeC;    typedef D TypeD;    typedef E TypeE;    typedef F TypeF;    Tuple6() {}    Tuple6(typename TupleTraits<A>::ParamType a,        typename TupleTraits<B>::ParamType b,        typename TupleTraits<C>::ParamType c,        typename TupleTraits<D>::ParamType d,        typename TupleTraits<E>::ParamType e,        typename TupleTraits<F>::ParamType f)        : a(a), b(b), c(c), d(d), e(e), f(f) {}    A a;    B b;    C c;    D d;    E e;    F f;};template<class A, class B, class C, class D, class E, class F, class G>struct Tuple7{public:    typedef A TypeA;    typedef B TypeB;    typedef C TypeC;    typedef D TypeD;    typedef E TypeE;    typedef F TypeF;    typedef G TypeG;    Tuple7() {}    Tuple7(typename TupleTraits<A>::ParamType a,        typename TupleTraits<B>::ParamType b,        typename TupleTraits<C>::ParamType c,        typename TupleTraits<D>::ParamType d,        typename TupleTraits<E>::ParamType e,        typename TupleTraits<F>::ParamType f,        typename TupleTraits<G>::ParamType g)        : a(a), b(b), c(c), d(d), e(e), f(f), g(g) {}    A a;    B b;    C c;    D d;    E e;    F f;    G g;};template<class A, class B, class C, class D, class E, class F, class G,class H>struct Tuple8{public:    typedef A TypeA;    typedef B TypeB;    typedef C TypeC;    typedef D TypeD;    typedef E TypeE;    typedef F TypeF;    typedef G TypeG;    typedef H TypeH;    Tuple8() {}    Tuple8(typename TupleTraits<A>::ParamType a,        typename TupleTraits<B>::ParamType b,        typename TupleTraits<C>::ParamType c,        typename TupleTraits<D>::ParamType d,        typename TupleTraits<E>::ParamType e,        typename TupleTraits<F>::ParamType f,        typename TupleTraits<G>::ParamType g,        typename TupleTraits<H>::ParamType h)        : a(a), b(b), c(c), d(d), e(e), f(f), g(g), h(h) {}    A a;    B b;    C c;    D d;    E e;    F f;    G g;    H h;};// Tuple types ----------------------------------------------------------------//// Allows for selection of ValueTuple/RefTuple/ParamTuple without needing the// definitions of class types the tuple takes as parameters.template<>struct TupleTypes< Tuple0 >{    typedef Tuple0 ValueTuple;    typedef Tuple0 RefTuple;    typedef Tuple0 ParamTuple;};template<class A>struct TupleTypes< Tuple1<A> >{    typedef Tuple1<typename TupleTraits<A>::ValueType> ValueTuple;    typedef Tuple1<typename TupleTraits<A>::RefType> RefTuple;    typedef Tuple1<typename TupleTraits<A>::ParamType> ParamTuple;};template<class A, class B>struct TupleTypes< Tuple2<A, B> >{    typedef Tuple2<typename TupleTraits<A>::ValueType,        typename TupleTraits<B>::ValueType> ValueTuple;    typedef Tuple2<typename TupleTraits<A>::RefType,        typename TupleTraits<B>::RefType> RefTuple;    typedef Tuple2<typename TupleTraits<A>::ParamType,        typename TupleTraits<B>::ParamType> ParamTuple;};template<class A, class B, class C>struct TupleTypes< Tuple3<A, B, C> >{    typedef Tuple3<typename TupleTraits<A>::ValueType,        typename TupleTraits<B>::ValueType,        typename TupleTraits<C>::ValueType> ValueTuple;    typedef Tuple3<typename TupleTraits<A>::RefType,        typename TupleTraits<B>::RefType,        typename TupleTraits<C>::RefType> RefTuple;    typedef Tuple3<typename TupleTraits<A>::ParamType,        typename TupleTraits<B>::ParamType,        typename TupleTraits<C>::ParamType> ParamTuple;};template<class A, class B, class C, class D>struct TupleTypes< Tuple4<A, B, C, D> >{    typedef Tuple4<typename TupleTraits<A>::ValueType,        typename TupleTraits<B>::ValueType,        typename TupleTraits<C>::ValueType,        typename TupleTraits<D>::ValueType> ValueTuple;    typedef Tuple4<typename TupleTraits<A>::RefType,        typename TupleTraits<B>::RefType,        typename TupleTraits<C>::RefType,        typename TupleTraits<D>::RefType> RefTuple;    typedef Tuple4<typename TupleTraits<A>::ParamType,        typename TupleTraits<B>::ParamType,        typename TupleTraits<C>::ParamType,        typename TupleTraits<D>::ParamType> ParamTuple;};template<class A, class B, class C, class D, class E>struct TupleTypes< Tuple5<A, B, C, D, E> >{    typedef Tuple5<typename TupleTraits<A>::ValueType,        typename TupleTraits<B>::ValueType,        typename TupleTraits<C>::ValueType,        typename TupleTraits<D>::ValueType,        typename TupleTraits<E>::ValueType> ValueTuple;    typedef Tuple5<typename TupleTraits<A>::RefType,        typename TupleTraits<B>::RefType,        typename TupleTraits<C>::RefType,        typename TupleTraits<D>::RefType,        typename TupleTraits<E>::RefType> RefTuple;    typedef Tuple5<typename TupleTraits<A>::ParamType,        typename TupleTraits<B>::ParamType,        typename TupleTraits<C>::ParamType,        typename TupleTraits<D>::ParamType,        typename TupleTraits<E>::ParamType> ParamTuple;};template<class A, class B, class C, class D, class E, class F>struct TupleTypes< Tuple6<A, B, C, D, E, F> >{    typedef Tuple6<typename TupleTraits<A>::ValueType,        typename TupleTraits<B>::ValueType,        typename TupleTraits<C>::ValueType,        typename TupleTraits<D>::ValueType,        typename TupleTraits<E>::ValueType,        typename TupleTraits<F>::ValueType> ValueTuple;    typedef Tuple6<typename TupleTraits<A>::RefType,        typename TupleTraits<B>::RefType,        typename TupleTraits<C>::RefType,        typename TupleTraits<D>::RefType,        typename TupleTraits<E>::RefType,        typename TupleTraits<F>::RefType> RefTuple;    typedef Tuple6<typename TupleTraits<A>::ParamType,        typename TupleTraits<B>::ParamType,        typename TupleTraits<C>::ParamType,        typename TupleTraits<D>::ParamType,        typename TupleTraits<E>::ParamType,        typename TupleTraits<F>::ParamType> ParamTuple;};template<class A, class B, class C, class D, class E, class F, class G>struct TupleTypes< Tuple7<A, B, C, D, E, F, G> >{    typedef Tuple7<typename TupleTraits<A>::ValueType,        typename TupleTraits<B>::ValueType,        typename TupleTraits<C>::ValueType,        typename TupleTraits<D>::ValueType,        typename TupleTraits<E>::ValueType,        typename TupleTraits<F>::ValueType,        typename TupleTraits<G>::ValueType> ValueTuple;    typedef Tuple7<typename TupleTraits<A>::RefType,        typename TupleTraits<B>::RefType,        typename TupleTraits<C>::RefType,        typename TupleTraits<D>::RefType,        typename TupleTraits<E>::RefType,        typename TupleTraits<F>::RefType,        typename TupleTraits<G>::RefType> RefTuple;    typedef Tuple7<typename TupleTraits<A>::ParamType,        typename TupleTraits<B>::ParamType,        typename TupleTraits<C>::ParamType,        typename TupleTraits<D>::ParamType,        typename TupleTraits<E>::ParamType,        typename TupleTraits<F>::ParamType,        typename TupleTraits<G>::ParamType> ParamTuple;};template<class A, class B, class C, class D, class E, class F, class G,class H>struct TupleTypes< Tuple8<A, B, C, D, E, F, G, H> >{    typedef Tuple8<typename TupleTraits<A>::ValueType,        typename TupleTraits<B>::ValueType,        typename TupleTraits<C>::ValueType,        typename TupleTraits<D>::ValueType,        typename TupleTraits<E>::ValueType,        typename TupleTraits<F>::ValueType,        typename TupleTraits<G>::ValueType,        typename TupleTraits<H>::ValueType> ValueTuple;    typedef Tuple8<typename TupleTraits<A>::RefType,        typename TupleTraits<B>::RefType,        typename TupleTraits<C>::RefType,        typename TupleTraits<D>::RefType,        typename TupleTraits<E>::RefType,        typename TupleTraits<F>::RefType,        typename TupleTraits<G>::RefType,        typename TupleTraits<H>::RefType> RefTuple;    typedef Tuple8<typename TupleTraits<A>::ParamType,        typename TupleTraits<B>::ParamType,        typename TupleTraits<C>::ParamType,        typename TupleTraits<D>::ParamType,        typename TupleTraits<E>::ParamType,        typename TupleTraits<F>::ParamType,        typename TupleTraits<G>::ParamType,        typename TupleTraits<H>::ParamType> ParamTuple;};// Tuple creators -------------------------------------------------------------//// Helper functions for constructing tuples while inferring the template// argument types.inline Tuple0 MakeTuple(){    return Tuple0();}template<class A>inline Tuple1<A> MakeTuple(const A& a){    return Tuple1<A>(a);}template<class A, class B>inline Tuple2<A, B> MakeTuple(const A& a, const B& b){    return Tuple2<A, B>(a, b);}template<class A, class B, class C>inline Tuple3<A, B, C> MakeTuple(const A& a, const B& b, const C& c){    return Tuple3<A, B, C>(a, b, c);}template<class A, class B, class C, class D>inline Tuple4<A, B, C, D> MakeTuple(const A& a, const B& b, const C& c,                                    const D& d){    return Tuple4<A, B, C, D>(a, b, c, d);}template<class A, class B, class C, class D, class E>inline Tuple5<A, B, C, D, E> MakeTuple(const A& a, const B& b, const C& c,                                       const D& d, const E& e){    return Tuple5<A, B, C, D, E>(a, b, c, d, e);}template<class A, class B, class C, class D, class E, class F>inline Tuple6<A, B, C, D, E, F> MakeTuple(const A& a, const B& b, const C& c,                                          const D& d, const E& e, const F& f){    return Tuple6<A, B, C, D, E, F>(a, b, c, d, e, f);}template<class A, class B, class C, class D, class E, class F, class G>inline Tuple7<A, B, C, D, E, F, G> MakeTuple(const A& a, const B& b, const C& c,                                             const D& d, const E& e, const F& f,                                             const G& g){    return Tuple7<A, B, C, D, E, F, G>(a, b, c, d, e, f, g);}template<class A, class B, class C, class D, class E, class F, class G,class H>    inline Tuple8<A, B, C, D, E, F, G, H> MakeTuple(const A& a, const B& b,    const C& c, const D& d,    const E& e, const F& f,    const G& g, const H& h){    return Tuple8<A, B, C, D, E, F, G, H>(a, b, c, d, e, f, g, h);}// The following set of helpers make what Boost refers to as "Tiers" - a tuple// of references.template<class A>inline Tuple1<A&> MakeRefTuple(A& a){    return Tuple1<A&>(a);}template<class A, class B>inline Tuple2<A&, B&> MakeRefTuple(A& a, B& b){    return Tuple2<A&, B&>(a, b);}template<class A, class B, class C>inline Tuple3<A&, B&, C&> MakeRefTuple(A& a, B& b, C& c){    return Tuple3<A&, B&, C&>(a, b, c);}template<class A, class B, class C, class D>inline Tuple4<A&, B&, C&, D&> MakeRefTuple(A& a, B& b, C& c, D& d){    return Tuple4<A&, B&, C&, D&>(a, b, c, d);}template<class A, class B, class C, class D, class E>inline Tuple5<A&, B&, C&, D&, E&> MakeRefTuple(A& a, B& b, C& c, D& d, E& e){    return Tuple5<A&, B&, C&, D&, E&>(a, b, c, d, e);}template<class A, class B, class C, class D, class E, class F>inline Tuple6<A&, B&, C&, D&, E&, F&> MakeRefTuple(A& a, B& b, C& c, D& d, E& e,                                                   F& f){    return Tuple6<A&, B&, C&, D&, E&, F&>(a, b, c, d, e, f);}template<class A, class B, class C, class D, class E, class F, class G>inline Tuple7<A&, B&, C&, D&, E&, F&, G&> MakeRefTuple(A& a, B& b, C& c, D& d,                                                       E& e, F& f, G& g){    return Tuple7<A&, B&, C&, D&, E&, F&, G&>(a, b, c, d, e, f, g);}template<class A, class B, class C, class D, class E, class F, class G,class H>    inline Tuple8<A&, B&, C&, D&, E&, F&, G&, H&> MakeRefTuple(A& a, B& b, C& c,    D& d, E& e, F& f,    G& g, H& h){    return Tuple8<A&, B&, C&, D&, E&, F&, G&, H&>(a, b, c, d, e, f, g, h);}// Dispatchers ----------------------------------------------------------------//// Helper functions that call the given method on an object, with the unpacked// tuple arguments.  Notice that they all have the same number of arguments,// so you need only write://   DispatchToMethod(object, &Object::method, args);// This is very useful for templated dispatchers, since they don't need to know// what type |args| is.// Non-Static Dispatchers with no out params.template<class ObjT, class Method>inline void DispatchToMethod(ObjT* obj, Method method, const Tuple0& arg){    (obj->*method)();}template<class ObjT, class Method, class A>inline void DispatchToMethod(ObjT* obj, Method method, const A& arg){    (obj->*method)(arg);}template<class ObjT, class Method, class A>inline void DispatchToMethod(ObjT* obj, Method method, const Tuple1<A>& arg){    (obj->*method)(arg.a);}template<class ObjT, class Method, class A, class B>inline void DispatchToMethod(ObjT* obj,                             Method method,                             const Tuple2<A, B>& arg){    (obj->*method)(arg.a, arg.b);}template<class ObjT, class Method, class A, class B, class C>inline void DispatchToMethod(ObjT* obj, Method method,                             const Tuple3<A, B, C>& arg){    (obj->*method)(arg.a, arg.b, arg.c);}template<class ObjT, class Method, class A, class B, class C, class D>inline void DispatchToMethod(ObjT* obj, Method method,                             const Tuple4<A, B, C, D>& arg){    (obj->*method)(arg.a, arg.b, arg.c, arg.d);}template<class ObjT, class Method, class A, class B, class C, class D, class E>inline void DispatchToMethod(ObjT* obj, Method method,                             const Tuple5<A, B, C, D, E>& arg){    (obj->*method)(arg.a, arg.b, arg.c, arg.d, arg.e);}template<class ObjT, class Method, class A, class B, class C, class D, class E,class F>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple6<A, B, C, D, E, F>& arg){    (obj->*method)(arg.a, arg.b, arg.c, arg.d, arg.e, arg.f);}template<class ObjT, class Method, class A, class B, class C, class D, class E,class F, class G>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple7<A, B, C, D, E, F, G>& arg){    (obj->*method)(arg.a, arg.b, arg.c, arg.d, arg.e, arg.f, arg.g);}// Static Dispatchers with no out params.template<class Function>inline void DispatchToFunction(Function function, const Tuple0& arg){    (*function)();}template<class Function, class A>inline void DispatchToFunction(Function function, const A& arg){    (*function)(arg);}template<class Function, class A>inline void DispatchToFunction(Function function, const Tuple1<A>& arg){    (*function)(arg.a);}template<class Function, class A, class B>inline void DispatchToFunction(Function function, const Tuple2<A, B>& arg){    (*function)(arg.a, arg.b);}template<class Function, class A, class B, class C>inline void DispatchToFunction(Function function, const Tuple3<A, B, C>& arg){    (*function)(arg.a, arg.b, arg.c);}template<class Function, class A, class B, class C, class D>inline void DispatchToFunction(Function function,                               const Tuple4<A, B, C, D>& arg){    (*function)(arg.a, arg.b, arg.c, arg.d);}template<class Function, class A, class B, class C, class D, class E>inline void DispatchToFunction(Function function,                               const Tuple5<A, B, C, D, E>& arg){    (*function)(arg.a, arg.b, arg.c, arg.d, arg.e);}template<class Function, class A, class B, class C, class D, class E, class F>inline void DispatchToFunction(Function function,                               const Tuple6<A, B, C, D, E, F>& arg){    (*function)(arg.a, arg.b, arg.c, arg.d, arg.e, arg.f);}template<class Function, class A, class B, class C, class D, class E, class F,class G>    inline void DispatchToFunction(Function function,    const Tuple7<A, B, C, D, E, F, G>& arg){    (*function)(arg.a, arg.b, arg.c, arg.d, arg.e, arg.f, arg.g);}template<class Function, class A, class B, class C, class D, class E, class F,class G, class H>    inline void DispatchToFunction(Function function,    const Tuple8<A, B, C, D, E, F, G, H>& arg){    (*function)(arg.a, arg.b, arg.c, arg.d, arg.e, arg.f, arg.g, arg.h);}// Dispatchers with 0 out param (as a Tuple0).template<class ObjT, class Method>inline void DispatchToMethod(ObjT* obj,                             Method method,                             const Tuple0& arg, Tuple0*){    (obj->*method)();}template<class ObjT, class Method, class A>inline void DispatchToMethod(ObjT* obj, Method method, const A& arg, Tuple0*){    (obj->*method)(arg);}template<class ObjT, class Method, class A>inline void DispatchToMethod(ObjT* obj,                             Method method,                             const Tuple1<A>& arg, Tuple0*){    (obj->*method)(arg.a);}template<class ObjT, class Method, class A, class B>inline void DispatchToMethod(ObjT* obj,                             Method method,                             const Tuple2<A, B>& arg, Tuple0*){    (obj->*method)(arg.a, arg.b);}template<class ObjT, class Method, class A, class B, class C>inline void DispatchToMethod(ObjT* obj, Method method,                             const Tuple3<A, B, C>& arg, Tuple0*){    (obj->*method)(arg.a, arg.b, arg.c);}template<class ObjT, class Method, class A, class B, class C, class D>inline void DispatchToMethod(ObjT* obj, Method method,                             const Tuple4<A, B, C, D>& arg, Tuple0*){    (obj->*method)(arg.a, arg.b, arg.c, arg.d);}template<class ObjT, class Method, class A, class B, class C, class D, class E>inline void DispatchToMethod(ObjT* obj, Method method,                             const Tuple5<A, B, C, D, E>& arg, Tuple0*){    (obj->*method)(arg.a, arg.b, arg.c, arg.d, arg.e);}template<class ObjT, class Method, class A, class B, class C, class D, class E,class F>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple6<A, B, C, D, E, F>& arg, Tuple0*){    (obj->*method)(arg.a, arg.b, arg.c, arg.d, arg.e, arg.f);}// Dispatchers with 1 out param.template<class ObjT, class Method,class OutA>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple0& in,    Tuple1<OutA>* out){    (obj->*method)(&out->a);}template<class ObjT, class Method, class InA,class OutA>    inline void DispatchToMethod(ObjT* obj, Method method,    const InA& in,    Tuple1<OutA>* out){    (obj->*method)(in, &out->a);}template<class ObjT, class Method, class InA,class OutA>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple1<InA>& in,    Tuple1<OutA>* out){    (obj->*method)(in.a, &out->a);}template<class ObjT, class Method, class InA, class InB,class OutA>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple2<InA, InB>& in,    Tuple1<OutA>* out){    (obj->*method)(in.a, in.b, &out->a);}template<class ObjT, class Method, class InA, class InB, class InC,class OutA>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple3<InA, InB, InC>& in,    Tuple1<OutA>* out){    (obj->*method)(in.a, in.b, in.c, &out->a);}template<class ObjT, class Method, class InA, class InB, class InC, class InD,class OutA>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple4<InA, InB, InC, InD>& in,    Tuple1<OutA>* out){    (obj->*method)(in.a, in.b, in.c, in.d, &out->a);}template<class ObjT, class Method, class InA, class InB, class InC, class InD,class InE, class OutA>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple5<InA, InB, InC, InD, InE>& in,    Tuple1<OutA>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e, &out->a);}template<class ObjT, class Method,class InA, class InB, class InC, class InD, class InE, class InF,class OutA>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple6<InA, InB, InC, InD, InE, InF>& in,    Tuple1<OutA>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e, in.f, &out->a);}// Dispatchers with 2 out params.template<class ObjT, class Method,class OutA, class OutB>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple0& in,    Tuple2<OutA, OutB>* out){    (obj->*method)(&out->a, &out->b);}template<class ObjT, class Method, class InA,class OutA, class OutB>    inline void DispatchToMethod(ObjT* obj, Method method,    const InA& in,    Tuple2<OutA, OutB>* out){    (obj->*method)(in, &out->a, &out->b);}template<class ObjT, class Method, class InA,class OutA, class OutB>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple1<InA>& in,    Tuple2<OutA, OutB>* out){    (obj->*method)(in.a, &out->a, &out->b);}template<class ObjT, class Method, class InA, class InB,class OutA, class OutB>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple2<InA, InB>& in,    Tuple2<OutA, OutB>* out){    (obj->*method)(in.a, in.b, &out->a, &out->b);}template<class ObjT, class Method, class InA, class InB, class InC,class OutA, class OutB>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple3<InA, InB, InC>& in,    Tuple2<OutA, OutB>* out){    (obj->*method)(in.a, in.b, in.c, &out->a, &out->b);}template<class ObjT, class Method, class InA, class InB, class InC, class InD,class OutA, class OutB>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple4<InA, InB, InC, InD>& in,    Tuple2<OutA, OutB>* out){    (obj->*method)(in.a, in.b, in.c, in.d, &out->a, &out->b);}template<class ObjT, class Method,class InA, class InB, class InC, class InD, class InE,class OutA, class OutB>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple5<InA, InB, InC, InD, InE>& in,    Tuple2<OutA, OutB>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e, &out->a, &out->b);}template<class ObjT, class Method,class InA, class InB, class InC, class InD, class InE, class InF,class OutA, class OutB>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple6<InA, InB, InC, InD, InE, InF>& in,    Tuple2<OutA, OutB>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e, in.f, &out->a, &out->b);}// Dispatchers with 3 out params.template<class ObjT, class Method,class OutA, class OutB, class OutC>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple0& in,    Tuple3<OutA, OutB, OutC>* out){    (obj->*method)(&out->a, &out->b, &out->c);}template<class ObjT, class Method, class InA,class OutA, class OutB, class OutC>    inline void DispatchToMethod(ObjT* obj, Method method,    const InA& in,    Tuple3<OutA, OutB, OutC>* out){    (obj->*method)(in, &out->a, &out->b, &out->c);}template<class ObjT, class Method, class InA,class OutA, class OutB, class OutC>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple1<InA>& in,    Tuple3<OutA, OutB, OutC>* out){    (obj->*method)(in.a, &out->a, &out->b, &out->c);}template<class ObjT, class Method, class InA, class InB,class OutA, class OutB, class OutC>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple2<InA, InB>& in,    Tuple3<OutA, OutB, OutC>* out){    (obj->*method)(in.a, in.b, &out->a, &out->b, &out->c);}template<class ObjT, class Method, class InA, class InB, class InC,class OutA, class OutB, class OutC>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple3<InA, InB, InC>& in,    Tuple3<OutA, OutB, OutC>* out){    (obj->*method)(in.a, in.b, in.c, &out->a, &out->b, &out->c);}template<class ObjT, class Method, class InA, class InB, class InC, class InD,class OutA, class OutB, class OutC>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple4<InA, InB, InC, InD>& in,    Tuple3<OutA, OutB, OutC>* out){    (obj->*method)(in.a, in.b, in.c, in.d, &out->a, &out->b, &out->c);}template<class ObjT, class Method,class InA, class InB, class InC, class InD, class InE,class OutA, class OutB, class OutC>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple5<InA, InB, InC, InD, InE>& in,    Tuple3<OutA, OutB, OutC>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e, &out->a, &out->b, &out->c);}template<class ObjT, class Method,class InA, class InB, class InC, class InD, class InE, class InF,class OutA, class OutB, class OutC>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple6<InA, InB, InC, InD, InE, InF>& in,    Tuple3<OutA, OutB, OutC>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e, in.f, &out->a, &out->b, &out->c);}// Dispatchers with 4 out params.template<class ObjT, class Method,class OutA, class OutB, class OutC, class OutD>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple0& in,    Tuple4<OutA, OutB, OutC, OutD>* out){    (obj->*method)(&out->a, &out->b, &out->c, &out->d);}template<class ObjT, class Method, class InA,class OutA, class OutB, class OutC, class OutD>    inline void DispatchToMethod(ObjT* obj, Method method,    const InA& in,    Tuple4<OutA, OutB, OutC, OutD>* out){    (obj->*method)(in, &out->a, &out->b, &out->c, &out->d);}template<class ObjT, class Method, class InA,class OutA, class OutB, class OutC, class OutD>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple1<InA>& in,    Tuple4<OutA, OutB, OutC, OutD>* out){    (obj->*method)(in.a, &out->a, &out->b, &out->c, &out->d);}template<class ObjT, class Method, class InA, class InB,class OutA, class OutB, class OutC, class OutD>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple2<InA, InB>& in,    Tuple4<OutA, OutB, OutC, OutD>* out){    (obj->*method)(in.a, in.b, &out->a, &out->b, &out->c, &out->d);}template<class ObjT, class Method, class InA, class InB, class InC,class OutA, class OutB, class OutC, class OutD>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple3<InA, InB, InC>& in,    Tuple4<OutA, OutB, OutC, OutD>* out){    (obj->*method)(in.a, in.b, in.c, &out->a, &out->b, &out->c, &out->d);}template<class ObjT, class Method, class InA, class InB, class InC, class InD,class OutA, class OutB, class OutC, class OutD>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple4<InA, InB, InC, InD>& in,    Tuple4<OutA, OutB, OutC, OutD>* out){    (obj->*method)(in.a, in.b, in.c, in.d, &out->a, &out->b, &out->c, &out->d);}template<class ObjT, class Method,class InA, class InB, class InC, class InD, class InE,class OutA, class OutB, class OutC, class OutD>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple5<InA, InB, InC, InD, InE>& in,    Tuple4<OutA, OutB, OutC, OutD>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e,        &out->a, &out->b, &out->c, &out->d);}template<class ObjT, class Method,class InA, class InB, class InC, class InD, class InE, class InF,class OutA, class OutB, class OutC, class OutD>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple6<InA, InB, InC, InD, InE, InF>& in,    Tuple4<OutA, OutB, OutC, OutD>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e, in.f,        &out->a, &out->b, &out->c, &out->d);}// Dispatchers with 5 out params.template<class ObjT, class Method,class OutA, class OutB, class OutC, class OutD, class OutE>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple0& in,    Tuple5<OutA, OutB, OutC, OutD, OutE>* out){    (obj->*method)(&out->a, &out->b, &out->c, &out->d, &out->e);}template<class ObjT, class Method, class InA,class OutA, class OutB, class OutC, class OutD, class OutE>    inline void DispatchToMethod(ObjT* obj, Method method,    const InA& in,    Tuple5<OutA, OutB, OutC, OutD, OutE>* out){    (obj->*method)(in, &out->a, &out->b, &out->c, &out->d, &out->e);}template<class ObjT, class Method, class InA,class OutA, class OutB, class OutC, class OutD, class OutE>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple1<InA>& in,    Tuple5<OutA, OutB, OutC, OutD, OutE>* out){    (obj->*method)(in.a, &out->a, &out->b, &out->c, &out->d, &out->e);}template<class ObjT, class Method, class InA, class InB,class OutA, class OutB, class OutC, class OutD, class OutE>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple2<InA, InB>& in,    Tuple5<OutA, OutB, OutC, OutD, OutE>* out){    (obj->*method)(in.a, in.b, &out->a, &out->b, &out->c, &out->d, &out->e);}template<class ObjT, class Method, class InA, class InB, class InC,class OutA, class OutB, class OutC, class OutD, class OutE>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple3<InA, InB, InC>& in,    Tuple5<OutA, OutB, OutC, OutD, OutE>* out){    (obj->*method)(in.a, in.b, in.c, &out->a, &out->b, &out->c, &out->d, &out->e);}template<class ObjT, class Method, class InA, class InB, class InC, class InD,class OutA, class OutB, class OutC, class OutD, class OutE>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple4<InA, InB, InC, InD>& in,    Tuple5<OutA, OutB, OutC, OutD, OutE>* out){    (obj->*method)(in.a, in.b, in.c, in.d, &out->a, &out->b, &out->c, &out->d,        &out->e);}template<class ObjT, class Method,class InA, class InB, class InC, class InD, class InE,class OutA, class OutB, class OutC, class OutD, class OutE>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple5<InA, InB, InC, InD, InE>& in,    Tuple5<OutA, OutB, OutC, OutD, OutE>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e,        &out->a, &out->b, &out->c, &out->d, &out->e);}template<class ObjT, class Method,class InA, class InB, class InC, class InD, class InE, class InF,class OutA, class OutB, class OutC, class OutD, class OutE>    inline void DispatchToMethod(ObjT* obj, Method method,    const Tuple6<InA, InB, InC, InD, InE, InF>& in,    Tuple5<OutA, OutB, OutC, OutD, OutE>* out){    (obj->*method)(in.a, in.b, in.c, in.d, in.e, in.f,        &out->a, &out->b, &out->c, &out->d, &out->e);}#endif //__tuple_h__


0 0
原创粉丝点击