1qsize(9F)                Kernel Functions for Drivers                qsize(9F)
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NAME

6       qsize - find the number of messages on a queue
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SYNOPSIS

9       #include <sys/stream.h>
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13       int qsize(queue_t *q);
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INTERFACE LEVEL

17       Architecture independent level 1 (DDI/DKI).
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PARAMETERS

20       q    Queue to be evaluated.
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DESCRIPTION

24       The  qsize()  function  evaluates the queue q and returns the number of
25       messages it contains.
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RETURN VALUES

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

32       The qsize() function can be called from user, interrupt, or kernel con‐
33       text.
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SEE ALSO

36       Writing Device Drivers
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39       STREAMS Programming Guide
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43SunOS 5.11                        16 Jan 2006                        qsize(9F)