BCANPUT(9F)BCANPUT(9F)NAMEbcanput - test for flow control in specified priority band
int bcanput(queue_t *q, unsigned char pri);
Architecture independent level 1 (DDI/DKI).
Pointer to the message queue.
The bcanput() function searches through the stream (starting at q)
until it finds a queue containing a service routine where the message
can be enqueued, or until it reaches the end of the stream. If found,
the queue containing the service routine is tested to see if there is
room for a message of priority pri in the queue.
If pri is 0, bcanput() is equivalent to a call with canput(9F).
canputnext(q) and bcanputnext(q,pri) should always be used in prefer‐
ence to canput(q→q_next) and bcanput(q→q_next,pri) respectively.
If a message of priority pri can be placed on the queue.
If the priority band is full.
The bcanput() function can be called from user, interrupt, or kernel
SEE ALSObcanputnext(9F), canput(9F), canputnext(9F), putbq(9F), putnext(9F)
Writing Device Drivers
STREAMS Programming Guide
Drivers are responsible for both testing a queue with bcanput() and
refraining from placing a message on the queue if bcanput() fails.
Jan 16, 2006 BCANPUT(9F)