개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

qreply(9f)

qreply(9F)                     Kernel Functions                     qreply(9F)



NAME
       qreply - send a message on a stream in the reverse direction

SYNOPSIS
       #include <sys/stream.h>

       void qreply(queue_t *q, mblk_t *mp);

INTERFACE LEVEL
       Architecture independent level 1 (DDI/DKI).

PARAMETERS
       q     Pointer to the queue.


       mp    Pointer to the message to be sent in the opposite direction.


DESCRIPTION
       The qreply() function sends messages in the reverse direction of normal
       flow. That is, qreply(q,  mp) is equivalent to putnext(OTHERQ(q),  mp).

CONTEXT
       The qreply() function can be called from  user,  interrupt,  or  kernel
       context.

EXAMPLES
       Example 1 Canonical Flushing Code for STREAMS Drivers.



       This  example  depicts the canonical flushing code for STREAMS drivers.
       Assume that the driver has service procedures so that there may be mes‐
       sages  on its queues. See srv(9E). Its write-side put procedure handles
       M_FLUSH messages by first checking the FLUSHW bit in the first byte  of
       the  message,  then  the write queue is flushed (line 8) and the FLUSHW
       bit is turned off (line 9). See put(9E). If the FLUSHR bit is on,  then
       the read queue is flushed (line 12) and the message is sent back up the
       read side of the stream with the qreply() function (line  13).  If  the
       FLUSHR bit is off, then the message is freed (line 15). See the example
       for flushq(9F) for the canonical flushing code for modules.




         1  xxxwput(q, mp)
          2    queue_t *q;
          3    mblk_t *mp;
          4  {
          5       switch(mp->b_datap->db_type) {
          6       case M_FLUSH:
          7           if (*mp->b_rptr & FLUSHW) {
          8                  flushq(q, FLUSHALL);
          9                  *mp->b_rptr &= ~FLUSHW;
         10             }
         11           if (*mp->b_rptr & FLUSHR) {
         12                  flushq(RD(q), FLUSHALL);
         13                    qreply(q, mp);
         14           } else {
         15                    freemsg(mp);
         16             }
         17           break;
                    . . .
         18     }
         19  }


SEE ALSO
       put(9E), srv(9E), OTHERQ(9F), flushq(9F), putnext(9F)


       Writing Device Drivers in Oracle Solaris 11.4


       STREAMS Programming Guide



Oracle Solaris 11.4               16 Jan 2006                       qreply(9F)