qsize man page on SmartOS

qsize man page on SmartOS

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QSIZE(9F)							     QSIZE(9F)

NAME
       qsize - find the number of messages on a queue

SYNOPSIS
       #include <sys/stream.h>

       int qsize(queue_t *q);

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

PARAMETERS
       q
	    Queue to be evaluated.

DESCRIPTION
       The  qsize()  function  evaluates the queue q and returns the number of
       messages it contains.

RETURN VALUES
       If there are no message on the queue, qsize() returns 0. Otherwise,  it
       returns the integer representing the number of messages on the queue.

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

SEE ALSO
       Writing Device Drivers

       STREAMS Programming Guide

				 Jan 16, 2006			     QSIZE(9F)

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