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.

WR(9f)

WR(9F)                         Kernel Functions                         WR(9F)



NAME
       WR, wr - get pointer to the write queue for this module or driver

SYNOPSIS
       #include <sys/stream.h>
       #include <sys/ddi.h>

       queue_t *WR(queue_t *q);

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

PARAMETERS
       q    Pointer to the read queue whose write queue is to be returned.


DESCRIPTION
       The  WR()  function  accepts  a  read  queue pointer as an argument and
       returns a pointer to the write queue of the same module.


       CAUTION: Make sure the argument to this function is a pointer to a read
       queue.  WR()  will  not  check for queue type, and a system panic could
       result if the pointer is not to a read queue.

RETURN VALUES
       The pointer to the write queue.

CONTEXT
       The WR() function can be called from user, interrupt,  or  kernel  con‐
       text.

EXAMPLES
       Example 1 Using WR()



       In  a  STREAMS  close(9E)  routine,  the  driver  or module is passed a
       pointer to the read queue. These usually are set to the address of  the
       module-specific data structure for the minor device.



         1   xxxclose(q, flag)
         2       queue_t *q;
         3       int flag;
         4   {
         5             q->q_ptr = NULL;
         6         WR(q)->q_ptr = NULL;
                       . . .
         7   }



SEE ALSO
       close(9E), OTHERQ(9F), RD(9F)


       Writing Device Drivers in Oracle Solaris 11.4


       STREAMS Programming Guide



Oracle Solaris 11.4               16 Jan 2006                           WR(9F)