?? mpls_refcnt.h
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/* * Copyright (C) James R. Leu 2002 * jleu@mindspring.com * * This software is covered under the LGPL, for more * info check out http://www.gnu.org/copyleft/lgpl.html */#ifndef _MPLS_REFCNT_H_#define _MPLS_REFCNT_H_#include "mpls_assert.h"#define MPLS_REFCNT_FIELD uint32_t _refcnt#define MPLS_REFCNT_VALUE(obj) (obj)?((obj)->_refcnt):(-1)#define MPLS_REFCNT_INIT(obj,count) { \ (obj)->_refcnt = count; \}#define MPLS_REFCNT_HOLD(obj) { \ if((obj) != NULL) { \ (obj)->_refcnt++; \ } \}#define MPLS_REFCNT_RELEASE(obj,dstry) { \ if((obj) != NULL) { \ (obj)->_refcnt--; \ if((obj)->_refcnt <= 0) { \ dstry(obj); \ obj = NULL; \ } \ } \}#define MPLS_REFCNT_RELEASE2(global,obj,dstry) { \ if((obj) != NULL) { \ (obj)->_refcnt--; \ if((obj)->_refcnt <= 0) { \ dstry(global,obj); \ obj = NULL; \ } \ } \}#define MPLS_REFCNT_ASSERT(obj,count) { \ if((obj) != NULL) { \ MPLS_ASSERT((obj)->_refcnt == count); \ } \}#define MPLS_REFCNT_PTR_TYPE uint32_t*#define MPLS_REFCNT_PTR(obj) (((obj) != NULL)?(&((obj)->_refcnt)):(NULL))#define MPLS_REFCNT_PTR_HOLD(ptr) { \ if((ptr) != NULL) { \ ((*(ptr))++); \ } \}#define MPLS_REFCNT_PTR_RELEASE(ptr) { \ if((ptr) != NULL) { \ ((*(ptr))--); \ } \}#endif?? 快捷鍵說明
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