osf1 man page for getq

getq(9r)																  getq(9r)

NAME
       getq - STREAMS: Gets a message from the front of the queue

SYNOPSIS
       #include <sys/stream.h>

       MBLKP getq(
	       queue_t *message_queue );

ARGUMENTS
       Specifies  a  pointer  to  the message queue from which the message is to be retrieved. The typedef queue_t is an alternate name for struct
       queue_entry *.

DESCRIPTION
       The getq interface is used by a service interface to retrieve its enqueued messages.

       A module or driver may include a service interface to process enqueued messages. Once the STREAMS scheduler  calls  this  service  it  must
       process	all  enqueued  messages,  unless prevented by flow control. The getq interface gets the next available message from the top of the
       queue pointed to by the message_queue argument. You should call getq in a while loop that should be exited only when there are no more mes-
       sages.

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.

SEE ALSO
       Kernel Interfaces: bcanput(9r), canput(9r), putbq(9r), putq(9r), qenable(9r)

       Programmer's Guide: STREAMS

																	  getq(9r)