shm_elem.h

来自「hash表和单向链表的实现代码,相当实用.」· C头文件 代码 · 共 41 行

/*=================================================================
** Copyright (c)2006,
** All rights reserved.
**
** 文件名称：ipc_elem.h
**
** 当前版本：1.1
** 作    者：Like
** 完成日期：2006-11-24
**
===================================================================*/

#ifndef SHM_ELEM_H
#define SHM_ELEM_H

extern char* gMemBase;

typedef unsigned long ShmOffset;

#define MAKE_SHM_OFF(ptr) \
    (((unsigned long) ptr) - ((unsigned long) gMemBase))

#define MAKE_SHM_PTR(off) \
    (((unsigned long) gMemBase) + ((unsigned long) off))

typedef struct ShmElem
{
    ShmOffset   _nextOffset;
    ShmOffset   _prevOffset;
    
} ShmElem;

typedef struct ShmOListElem
{
    ShmOffset   _nextOffset;
    
} ShmOListElem;

#endif