/*
 *  Copyright (C) James R. Leu 2000
 *  jleu@mindspring.com
 *
 *  This software is covered under the LGPL, for more
 *  info check out http://www.gnu.org/copyleft/lgpl.html
 */

#ifndef _LDP_REFCNT_H_
#define _LDP_REFCNT_H_

#ifdef __LDP_LINUX__
#include "ldp_assert.h"
#else
#include <ldp/ldp_assert.h>
#endif

#define LDP_REFCNT_FIELD  uint32_t	_refcnt

#define LDP_REFCNT_VALUE(obj) (obj)?((obj)->_refcnt):(-1)

#define LDP_REFCNT_INIT(obj,count) {		\
  (obj)->_refcnt = count;			\
}

#define LDP_REFCNT_HOLD(obj) {			\
  if((obj) != NULL) {				\
    (obj)->_refcnt++;				\
  }						\
}

#define LDP_REFCNT_RELEASE(obj,dstry) {		\
  if((obj) != NULL) {				\
    (obj)->_refcnt--;				\
    if((obj)->_refcnt <= 0) {			\
      dstry(obj);				\
      obj = NULL;				\
    }						\
  }						\
}

#define LDP_REFCNT_ASSERT(obj,count) {		\
  if((obj) != NULL) {				\
    LDP_ASSERT((obj)->_refcnt == count);	\
  }						\
}

#define LDP_REFCNT_PTR_TYPE  uint32_t*
#define LDP_REFCNT_PTR(obj) (((obj) != NULL)?(&((obj)->_refcnt)):(NULL))

#define LDP_REFCNT_PTR_HOLD(ptr) {		\
  if((ptr) != NULL) {				\
    ((*(ptr))++);				\
  }						\
}
#define LDP_REFCNT_PTR_RELEASE(ptr) {		\
  if((ptr) != NULL) {				\
    ((*(ptr))--);				\
  }						\
}

#endif