enableok(D3)enableok(D3)NAMEenableok - allow a queue to be serviced
SYNOPSIS
#include <sys/stream.h>
#include <sys/ddi.h>
void enableok(queue_t *q);
Arguments
q Pointer to the queue.
DESCRIPTION
The enableok function allows the service routine of the queue pointed to
by q to be rescheduled for service. It cancels the effect of a previous
use of the noenable(D3) function on q.
Return Values
None
USAGE
Level
Base or Interrupt.
Synchronization Constraints
Does not sleep.
Driver-defined basic locks, read/write locks, and sleep locks may be held
across calls to this function.
The caller cannot have the stream frozen [see freezestr(D3)] when calling
this function.
Examples
The qrestart routine uses two STREAMS functions to re-enable a queue that
has been disabled. The enableok function removes the restriction that
prevented the queue from being scheduled when a message was enqueued.
Then, if there are messages on the queue, it is scheduled by calling
qenable(D3).
1 void
2 qrestart(q)
3 queue_t *q;
4 {
5 enableok(q);
6 if (q->q_first)
7 qenable(q);
8 }
REFERENCESnoenable(D3), qenable(D3), queue(D4), srv(D2)
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