RWTFunctorR0Imp<SR>

Module:  Threads   Package:  Functor

RWTFunctorR0Imp<SR>   RWBodyBase
      RWTFunctorR0<SR> Implementation Classes   RWTFunctorR0Imp<SR>

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Members

CalleeSignature

make()

#include <rw/functor/RWTFunctorR0Imp.h>

#include <rw/functor/RWTFunctorR0GImp.h>
#include <rw/functor/RWTFunctorR0GA1Imp.h>
#include <rw/functor/RWTFunctorR0GA2Imp.h>
#include <rw/functor/RWTFunctorR0GA3Imp.h>
#include <rw/functor/RWTFunctorR0MImp.h>
#include <rw/functor/RWTFunctorR0MA1Imp.h>
#include <rw/functor/RWTFunctorR0MA2Imp.h>
#include <rw/functor/RWTFunctorR0MA3Imp.h>

A function object, or a functor, is an object that encapsulates a call to an associated global or member function. When a functor is invoked, it calls the associated function.

RWTFunctorR0Imp<SR> is the abstract base class for the family of functor bodies that take no caller arguments at invocation time and return a value.

The make() function is the only member of these functor classes that is intended to be accessed directly; it is often called through one of the rwtMakeFunctor0() convenience mechanisms. All other members must be accessed through an RWFunctor0 handle.

Each derived class name appends either a G (for global) or an M (for member), to indicate whether or not it is invoked upon an object. Static member functions use the G version, since there is no object associated with the call.

The class name may also append A1, A2, or A3, to indicate that it takes callee arguments at construction time. These arguments are stored and added to the caller argument at invocation time.

The eight concrete class names are:

RWTFunctorR0GImp<SR,DR>	No this object, no callee arguments
RWTFunctorR0GA1Imp<SR,DR,A1>	No this object, one callee argument
RWTFunctorR0GA2Imp<SR,DR,A1,A2>	No this object, two callee arguments
RWTFunctorR0GA3Imp<SR,DR,A1,A2,A3>	No this object, three callee arguments
RWTFunctorR0MImp<SR,Callee,DR>	Has this object, but no callee arguments
RWTFunctorR0MA1Imp<SR,Callee,DR,A1>	Has this object, and one callee argument
RWTFunctorR0MA2Imp<SR,Callee,DR,A1,A2>	Has this object, and two callee arguments
RWTFunctorR0MA3Imp<SR,Callee,DR,A1,A2,A3>	Has this object, and three callee arguments

These concrete classes are templatized on the signature of the function that is encapsulated, as well as on the signature of the functor invocation.

The template parameters describe the invocation signature of the functor and the function call it encapsulates. These parameters are:

SR	The return type of the functor
Callee	The class type that declares a member function
DR	The return type of the function; the compiler must be able to convert this to the SR type
A1	The type of the first client data argument
A2	The type of the second client data argument
A3	The type of the third client data argument

#include <rw/functor/RWTFunctorR0GA1Imp.h>

float foo(int);

// Create a functor that calls foo(7):
RWTFunctorR0<SR> func;
func = RWTFunctorR0GA1Imp<float,float,int>::make(foo,7);
// Invoke Functor
float result = func();

typedef DR (*CalleeSignature)();

In RWTFunctorR0GImp<SR,DR>.

typedef DR (*CalleeSignature)(A1);

In RWTFunctorR0GA1Imp<SR,DR,A1>.

typedef DR (*CalleeSignature)(A1,A2);

In RWTFunctorR0GA2Imp<SR,DR,A1,A2>.

typedef DR (*CalleeSignature)(A1,A2,A3);

In RWTFunctorR0GA3Imp<SR,DR,A1,A2,A3>.

typedef DR (Callee::*CalleeSignature)();

In RWTFunctorR0MImp<SR,Callee,DR>.

typedef DR (Callee::*CalleeSignature)(A1);

In RWTFunctorR0MA1Imp<SR,Callee,DR,A1>.

typedef DR (Callee::*CalleeSignature)(A1,A2);

In RWTFunctorR0MA2Imp<SR,Callee,DR,A1,A2>.

typedef DR (Callee::*CalleeSignature)(A1,A2,A3);

In RWTFunctorR0MA3Imp<SR,Callee,DR,A1,A2,A3>.

static
RWTFunctorR0<SR>
RWTFunctorR0GImp<SR,DR>::
make(CalleeSignature function);

static
RWTFunctorR0<SR>
RWTFunctorR0GA1Imp<SR,DR,A1>::
make(CalleeSignature function,
     A1 a1);

static
RWTFunctorR0<SR>
RWTFunctorR0GA2Imp<SR,DR,A1,A2>::
make(CalleeSignature function,
     A1 a1,
     A2 a2);

static
RWTFunctorR0<SR>
RWTFunctorR0GA3Imp<SR,DR,A1,A2,A3>::
make(CalleeSignature function,
     A1 a1,
     A2 a2,
     A3 a3);

static
RWTFunctorR0<SR>
RWTFunctorR0MImp<SR,Callee,DR>::
make(Callee& callee,
     CalleeSignature function);

static
RWTFunctorR0<SR>
RWTFunctorR0MA1Imp<SR,Callee,DR,A1>::
make(Callee& callee,
     CalleeSignature function,
     A1 a1);

static
RWTFunctorR0<SR>
RWTFunctorR0MA2Imp<SR,Callee,DR,A1,A2>::
make(Callee& callee,
     CalleeSignature function,
     A1 a1,
     A2 a2);

static
RWTFunctorR0<SR>
RWTFunctorR0MA3Imp<SR,Callee,DR,A1,A2,A3>::
make(Callee& callee,
     CalleeSignature function,
     A1 a1,
     A2 a2,
     A3 a3);

These make() functions dynamically construct an instance of the corresponding implementation class and bind it to the returned RWTFunctorR0<SR> handle instance.

rwtMakeFunctorR0(), RWTFunctorR0<SR>

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