svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
putbq(9f)
putbq(9F) Kernel Functions putbq(9F)
NAME
putbq - place a message at the head of a queue
SYNOPSIS
#include <sys/stream.h>
int putbq(queue_t *q, mblk_t *bp);
INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI).
PARAMETERS
q Pointer to the queue.
bp Pointer to the message block.
DESCRIPTION
The putbq() function places a message at the beginning of the appropri‐
ate section of the message queue. There are always sections for high
priority and ordinary messages. If other priority bands are used, each
will have its own section of the queue, in priority band order, after
high priority messages and before ordinary messages. putbq() can be
used for ordinary, priority band, and high priority messages. However,
unless precautions are taken, using putbq() with a high priority mes‐
sage is likely to lead to an infinite loop of putting the message back
on the queue, being rescheduled, pulling it off, and putting it back
on.
This function is usually called when bcanput(9F) or canput(9F) deter‐
mines that the message cannot be passed on to the next stream compo‐
nent. The flow control parameters are updated to reflect the change in
the queue's status. If QNOENB is not set, the service routine is en‐
abled.
RETURN VALUES
The putbq() function returns 1 upon success and 0 upon failure.
Upon failure, the caller should call freemsg(9F) to free the pointer to
the message block.
CONTEXT
The putbq() function can be called from user, interrupt, or kernel con‐
text.
EXAMPLES
See the bufcall(9F) function page for an example of putbq().
SEE ALSO
bcanput(9F), bufcall(9F), canput(9F), getq(9F), putq(9F)
Writing Device Drivers in Oracle Solaris 11.4
STREAMS Programming Guide
Oracle Solaris 11.4 16 Jan 2006 putbq(9F)