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OSMemberFunctionCast

Converts a C++ member function pointer, relative to an instance, to a C-style pointer to function.

Declaration

#define OSMemberFunctionCast(cptrtype, self, func)

Parameters

cptrtype:
The function type declaration to cast to (typically provided as a typedef by I/O KitKit classes).
self:
The this pointer of the object whose function you wish to cache.
func:
The pointer to the member function itself, something like &Class::function.

Return Value

A pointer to a function of the given type referencing self.

Discussion

This function is used to generate pointers to C++ functions for instances, such that they can be registered as callbacks with I/O Kit objects.

No warnings are generated.

This function will panic if an attempt is made to call it with a multiply-inheriting class.