OTHERQ, otherq - get pointer to queue's partner queue
#include <sys/stream.h> #include <sys/ddi.h> queue_t *OTHERQ(queue_t *q);
Architecture independent level 1 (DDI/DKI).
Pointer to the queue.
The OTHERQ() function returns a pointer to the other of the two queue structures that make up a STREAMS module or driver. If q points to the read queue the write queue will be returned, and vice versa.
The OTHERQ() function returns a pointer to a queue's partner.
The OTHERQ() function can be called from user, interrupt, or kernel context.
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(q, min, max, hi, lo)
3 queue_t *q;
4 short min;
5 short max;
6 ushort_t hi;
7 ushort_t lo;
8 {
9 q->q_minpsz = min;
10 q->q_maxpsz = max;
11 q->q_hiwat = hi;
12 q->q_lowat = lo;
13 OTHERQ(q)->q_minpsz = min;
14 OTHERQ(q)->q_maxpsz = max;
15 OTHERQ(q)->q_hiwat = hi;
16 OTHERQ(q)->q_lowat = lo;
17 }