OTHERQ(D3)

NAME
     OTHERQ - get a pointer to queue's partner queue

SYNOPSIS
     #include <sys/stream.h>
     #include <sys/ddi.h>
     queue_t *OTHERQ(queue_t *q);

   Arguments
     q         Pointer to the queue.

DESCRIPTION
     The OTHERQ function returns a pointer to the other of the two queue
     structures that make up an instance of a STREAMS module or driver.

   Return Values
     OTHERQ returns a pointer to a queue's partner.

USAGE
   Level
     Base or Interrupt.

   Synchronization Constraints
     Does not sleep.

     Multithreaded drivers may hold driver-defined basic locks, read/write
     locks, and sleep locks across calls to this function.

   Examples
     This routine sets the minimum packet size, the maximum packet size, the
     high water mark, and the low water mark for the read and write queues of
     a given module or driver.  It is passed either one of the queues.  This
     could be used if a module or driver wished to update its queue parameters
     dynamically.

      1  void
      2  set_q_params(queue_t *q, long min, long max, ulong_t hi, ulong_t lo)
      3  {
      4   pl_t pl;  /* for multi-threaded drivers */
      5   (void) strqset(q, QMINPSZ, 0, min);
      6   (void) strqset(q, QMAXPSZ, 0, max);
      7   (void) strqset(q, QHIWAT, 0, hi);
      8   (void) strqset(q, QLOWAT, 0, lo);
      9   (void) strqset(OTHERQ(q), QMINPSZ, 0, min);
     10   (void) strqset(OTHERQ(q), QMAXPSZ, 0, max);
     11   (void) strqset(OTHERQ(q), QHIWAT, 0, hi);
     12   (void) strqset(OTHERQ(q), QLOWAT, 0, lo);
     13  }
REFERENCES
     RD(D3), WR(D3)