C语言回调函数_c回调和宏

C语言回调函数

//函数指针的定义
typedef ULONG (*PPP_ABC_MSG_PROC_PF) (bitMask, VOID *, VOID *);

//定义一个宏，处理全局变量函数指针g_All_pfABCMSGProc的赋值
#define M_PPP_ABC_MSG_FUNC_DEFINE(tbl_id, get_config, set_config, create, del) \
    [tbl_id] = {                                 \
        [ABC_OP_GET]    = get_config,            \
        [ABC_OP_SET]    = set_config,            \
        [ABC_OP_ADD]    = create,       \
        [ABC_OP_DEL]    = del \
}

//全局变量保存函数指针
STATIC PPP_ABC_MSG_PROC_PF g_All_pfABCMSGProc[MaxMsgType][MaxopAction] = {
	M_PPP_ABC_MSG_FUNC_DEFINE(TABLE_ID_1,
								  Fun_Get1,
								  Fun_Set1,
								  Fun_Add1,
								  Fun_Del1,
								  ),
	M_PPP_ABC_MSG_FUNC_DEFINE(TABLE_ID_2,
								  Fun_Get2,
								  Fun_Set2,
								  Fun_Add2,
								  Fun_Del2,
								  ),

}
//回调函数的公共入口函数
STATIC ULONG  MduleMainCallBackFun(void * pCfgMsg, void* pRepMsg)
{
	ULONG errCode = ERROR_SUCCESS;
	PPP_ABC_MSG_PROC_PF pfPABCMSGProc = NULL;
	
	xxxx
	xxxx
	MsgType = GetMsgType();
	opAction = Get(opAction);

	//根据MsgType 、opAction 找到对应的函数指针
	pfPABCMSGProc = g_All_pfABCMSGProc[MsgType][opAction];
	if (NULL != pfPABCMSGProc )
	{
		//进行回调
		errCode = (*pfPABCMSGProc)(xxx, xxx, xxx);
	}
	xxxx
	return errCore;
}
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