SAMESTR(9F)

NAME

     SAMESTR, samestr - test if next queue is in the same stream

SYNOPSIS

     #include <sys/stream.h>

     int SAMESTR(queue_t *q);

INTERFACE LEVEL

     Architecture independent level 1 (DDI/DKI).

PARAMETERS

     q     Pointer to the queue.

DESCRIPTION

     The SAMESTR() function is used to see if the next queue in a
     stream  (if it exists) is the same type as the current queue
     (that is, both are read queues or both  are  write  queues).
     This  function  accounts  for  the twisted queue connections
     that occur in a STREAMS pipe and should be used  in  prefer-
     ence  to direct examination of the q_next field of queue(9S)
     to see if the stream continues beyond q.

RETURN VALUES

     SAMESTR() returns 1 if the next queue is the  same  type  as
     the  current  queue. It returns 0 if the next queue does not
     exist or if it is not the same type.

CONTEXT

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

SEE ALSO

     OTHERQ(9F)

     Writing Device Drivers

     STREAMS Programming Guide