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.

getq(9f)

getq(9F)                       Kernel Functions                       getq(9F)

NAME
       getq - get the next message from a queue

SYNOPSIS
       #include <sys/stream.h>

       mblk_t *getq(queue_t *q);

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

PARAMETERS
       q    Pointer to the queue from which the message is to be retrieved.


DESCRIPTION
       The  getq() function is used by a service (srv(9E)) routine to retrieve
       its enqueued messages.


       A module or driver may include a service routine  to  process  enqueued
       messages.  Once  the  STREAMS scheduler calls srv() it must process all
       enqueued messages, unless prevented by flow control. getq() obtains the
       next available message from the top of the queue pointed to  by  q.  It
       should  be called in a while loop that is exited only when there are no
       more messages or flow control prevents further processing.


       If an attempt was made to write to the queue while it  was  blocked  by
       flow  control,  getq() back-enables (restarts) the service routine once
       it falls below the low water mark.

RETURN VALUES
       If there is a message to retrieve, getq() returns a pointer to  it.  If
       no message is queued, getq() returns a NULL pointer.

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

EXAMPLES
       See dupb(9F).

SEE ALSO
       srv(9E), bcanput(9F), canput(9F), dupb(9F), putbq(9F),  putq(9F),  qen‐
       able(9F)


       Writing Device Drivers in Oracle Solaris 11.4


       STREAMS Programming Guide

Oracle Solaris 11.4               16 Jan 2006                         getq(9F)