SVR5 and SCO OpenServer 5

noenable(D3str)

noenable -- prevent a queue from being scheduled

Synopsis

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

Description

The noenable function prevents the service routine of the queue pointed to by q from being scheduled for service by insq(D3str), putbq(D3str), or putq(D3str), when enqueuing a message that is not a high priority message.

Arguments

q: Pointer to the queue.

Return values

None.

Usage

The high-priority-only message restriction can be lifted with the enableok(D3str) function.

noenable does not prevent the queue's service routine from being scheduled when a high priority message is enqueued, or by an explicit call to qenable(D3str).

Context

Base or Interrupt.

Synchronization constraints

Does not block.

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(D3str)) when calling this function.

Hardware applicability

All

Version applicability

ddi: 1, 2, 3, 4, 5, 5mp, 6, 6mp, 7, 7mp, 7.1, 7.1mp, 8, 8mp
oddi: 1, 2, 2mp, 3, 3mp, 4, 4mp, 5, 5mp, 6, 6mp

References

enableok(D3str), insq(D3str), putbq(D3str), putq(D3str), qenable(D3str), queue(D4str), srv(D2str)