osx man page for qunbufcall

qunbufcall(9F)						   Kernel Functions for Drivers 					    qunbufcall(9F)

NAME

       qunbufcall - cancel a pending qbufcall request

SYNOPSIS

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

       void qunbufcall(queue_t *q, bufcall_id_t id);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       q	Pointer to STREAMS queue_t structure.

       id	Identifier returned from qbufcall(9F)

DESCRIPTION

       qunbufcall()  cancels a pending qbufcall() request. The argument id is a non-zero identifier of the request to be cancelled. id is returned
       from the qbufcall() function used to issue the cancel request.

       The qunbufcall() function is tailored to be used with the enhanced STREAMS framework interface which is based on the concept of perimeters.
       (See   mt-streams(9F).)	qunbufcall() returns when the bufcall has been cancelled or finished executing. The bufcall will be cancelled even
       if it is blocked at the perimeters associated with the queue. All outstanding timeouts and bufcalls must be cancelled before a driver close
       routine can block and before the close  routine calls qprocsoff(9F).

CONTEXT

       qunbufcall() can be called from user or interrupt context.

SEE ALSO

       mt-streams(9F), qbufcall(9F), qtimeout(9F), quntimeout(9F)

       Writing Device Drivers

       STREAMS Programming Guide

SunOS 5.10							    17 Oct 2002 						    qunbufcall(9F)