EST_THandle< BoxT, ObjectT > Class Template Reference

#include <include/EST_THandle.h>

Public Member Functions
	EST_THandle (BoxT *p)
	EST_THandle (const EST_THandle &cp)
bool	null () const
int	shareing (void) const
EST_THandle &	operator= (EST_THandle h)
EST_THandle &	operator= (BoxT *t_ptr)
	operator ObjectT * ()
	operator const ObjectT * () const
int	operator== (const BoxT *p) const
int	operator!= (const BoxT *p) const
const ObjectT &	operator* () const
ObjectT &	operator* ()
const ObjectT *	operator-> () const
ObjectT *	operator-> ()

Friends
int	operator== (const EST_THandle< BoxT, ObjectT > &a, const EST_THandle< BoxT, ObjectT > &b)
int	operator!= (const EST_THandle< BoxT, ObjectT > &a, const EST_THandle< BoxT, ObjectT > &b)
ostream &	operator<< (ostream &s, const EST_THandle< BoxT, ObjectT > &a)

Detailed Description

template<class BoxT, class ObjectT>
class EST_THandle< BoxT, ObjectT >

A `smart' pointer which does reference counting.

Behaves almost like a pointer as far as naive code is concerned, but keeps count of how many handles are holding on to the contents and deletes it when there are none.

You need to be careful there are no dumb C++ pointers to things which are being handled this way.

Things to be handled should implement the same interface as EST_Handleable (either by taking that as a superclass or by reimplementing it) and in addition define { object_ptr()}. See EST_TBox for an example.

There are two parameter types. In most cases the thing which contains the reference count and the data it represents will be the same object, but in the case of boxed values it may not be, so you can specify the type of both independently.

See Also

EST_Handleable

EST_TBox

EST_THandle:example

Author

Richard Caley rjc@c.nosp@m.str..nosp@m.ed.ac.nosp@m..uk

Version

Id:

EST_THandle.h,v 1.5 2006/07/19 21:52:12 awb Exp

Definition at line 71 of file EST_THandle.h.

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The documentation for this class was generated from the following file:

• include/EST_THandle.h