NAME | SYNOPSIS | PARAMETERS | INTERFACE LEVEL | DESCRIPTION | RETURN VALUES | CONTEXT | EXAMPLES | SUMMARY OF TRUSTED SOLARIS CHANGES | SEE ALSO | NOTES
#include <sys/stream.h>int putnextctl1(queue_t *q, int type, int p);
Architecture independent level 1 (DDI/DKI).
putnextctl1(), like putctl1(9F), tests the type argument to make sure a data type has not been specified, and attempts to allocate a message block. Thep parameter can be used, for example, to specify how long the delay will be when an M_DELAY message is being sent. putnextctl1() fails if type is M_DATA, M_PROTO, or M_PCPROTO, or if a message block cannot be allocated. If successful, putnextctl1() calls the put(9E) routine of the queue pointed to by q with the newly allocated and initialized message.
A call to putnextctl1(q,type, p) is an atomic equivalent of putctl1(q->q_next, type, p). The STREAMS framework provides whatever mutual exclusion is necessary to insure that de-referencing q through its q_next field and then invoking putctl1(9F) proceeds without interference from other threads.
On success, 1 is returned. 0 is returned if type is a data type, or if a message block cannot be allocated.
putnextctl1() can be called from user or interrupt context.
See the putnextctl(9F) function page for an example of putnextctl1().
This routine will put an unlabeled message on the stream. Use of this routine is strongly discouraged. Programmers should use tsol_putnextctl1(9F) instead. If this routine is used on a network-type stream, the message will be dropped by the STREAMS head.
These interfaces are uncommitted. Although not expected to do so, they may change between minor Trusted Solaris releases.
NAME | SYNOPSIS | PARAMETERS | INTERFACE LEVEL | DESCRIPTION | RETURN VALUES | CONTEXT | EXAMPLES | SUMMARY OF TRUSTED SOLARIS CHANGES | SEE ALSO | NOTES