继续贴几个MessageQ的函数

继续贴几个MessageQ的函数:

/**//*
*使用qstatus的时候要将.init文件中的ENABLE_SBS设置为YES
*ENABLE_SBS  MessageQ给出的解释：start selective broadcast and AVAIL/UNAVAIL
*/
/**//*
*查询MessageQ的队列中有多少条消息
*/
int32 qpendings(short qid,int *mailNum)
{
    int32       dmq_status;

    int32       num_queues;
    short       q_list[1];
    int32       pend_list[1];
    int           i;
      i = -1;
    num_queues    = 1;
    q_list[0] = qid;

    dmq_status    = putil_show_pending(
                               &num_queues,
                               q_list,
                               pend_list );

    if ( dmq_status != PAMS__SUCCESS ) 
    {
            mailNum = &i;
            return ( dmq_status );
    }
    *mailNum = pend_list[0];
    return ( 0 );

}
/**//*
*判断队列状态MSG_TYPE_AVAIL为attached MSG_TYPE_UNAVAIL为unattached
*调用了三个函数AvailRegister,AvailGet, AvailDeregister
*函数在MesssageQ的Example里面都能找到
*/
int32 qstatus(short qid)
{
     short       qstate;
   q_address   Avail_server;
   q_address   target_q;
   short       qavail;
   short       Rc;

   char        priority;
   short       msg_class;
   short       msg_type;
   short       msg_area_len;
   short       msg_data_len;
   int32       dmq_status;
   int32       sel_filter;
   q_address   msg_source;
   struct PSB  get_psb;
   int32       timeout = 30;

   char           *groupid, *getenv( );


   groupid=getenv("DMQ_GROUP_ID");

   qname2id("AVAIL_SERVER", &qavail);

   Avail_server.au.queue=qavail;
   Avail_server.au.group=atoi(groupid);

   target_q.au.queue=qid;
   target_q.au.group=atoi(groupid);

   Rc=AvailRegister(target_q,Avail_server);

   if(Rc!=PAMS__SUCCESS) {
     /**//*return;*/
   }
     printf("AvailRegister succ\n");
   Rc=AvailGet();

   if(Rc==MSG_TYPE_AVAIL)
     qstate=MSG_TYPE_AVAIL;
   else if(Rc==MSG_TYPE_UNAVAIL)
     qstate=MSG_TYPE_UNAVAIL;
   else
     qstate=0;

   Rc=AvailDeregister(target_q, Avail_server);
   return (int32)qstate;
}

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