opensolaris man page for qprocsoff

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

NAME
       qprocson, qprocsoff - enable, disable put and service routines

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

       void qprocson(queue_t *q);

       void qprocsoff(queue_t *q);

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

PARAMETERS
       q    Pointer to the RD side of a STREAMS queue pair.

DESCRIPTION
       The  qprocson()	enables the put and service routines of the driver or module whose read queue is pointed to by q. Threads cannot enter the
       module instance through the put and service routines while they are disabled.

       The qprocson() function must be called by the open routine of a driver or module before returning, and after any  initialization  necessary
       for the proper functioning of the put and service routines.

       The qprocson() function must be called before calling put(9F), putnext(9F), qbufcall(9F), qtimeout(9F), qwait(9F), or qwait_sig(9F).

       The  qprocsoff() function must be called by the close routine of a driver or module before returning, and before deallocating any resources
       necessary for the proper functioning of the put and service routines. It also removes the queue's service routines from the service  queue,
       and blocks until any pending service processing completes.

       The  module  or driver instance is guaranteed to be single-threaded before qprocson() is called and after qprocsoff() is called, except for
       threads executing asynchronous events such as interrupt handlers and callbacks, which must be handled separately.

CONTEXT
       These routines can be called from user, interrupt, or kernel context.

SEE ALSO
       close(9E), open(9E), put(9E), srv(9E), put(9F), putnext(9F), qbufcall(9F), qtimeout(9F), qwait(9F), qwait_sig(9F)

       Writing Device Drivers

       STREAMS Programming Guide

NOTES
       The caller may not have the STREAM frozen during either of these calls.

SunOS 5.11							    16 Jan 2006 						      qprocson(9F)