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/* */
/* Centre for Speech Technology Research */
/* University of Edinburgh, UK */
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/*************************************************************************/
#ifndef __EST_HANDLABLE_H__
#define __EST_HANDLABLE_H__
/** Reference Counting Interface.
*
* This simple class does most of the things an object which is to be
* manipulated by EST_THandle style smart pointers needs to provide.
*
* @see EST_THandle
* @see EST_TBox
* @see EST_TrackMap
* @author Richard Caley <rjc@cstr.ed.ac.uk>
* @version $Id: EST_Handleable.h,v 1.4 2004/09/29 08:24:17 robert Exp $
*/
#include <climits>
using namespace std;
class EST_Handleable
{
private:
int p_refcount;
public:
# define NOT_REFCOUNTED (INT_MAX)
EST_Handleable(void) { p_refcount=NOT_REFCOUNTED; }
int refcount(void) const { return p_refcount;}
void start_refcounting(int initial=0) {p_refcount=initial;}
void inc_refcount(void) {if (p_refcount!=NOT_REFCOUNTED) p_refcount++;}
void dec_refcount(void) {if (p_refcount!=NOT_REFCOUNTED) p_refcount--;}
int is_unreferenced(void) const {return p_refcount == 0;}
int is_refcounted(void) const {return p_refcount!= NOT_REFCOUNTED;}
//@}
};
#endif
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