MQ_CLOSE(3C) Standard C Library Functions MQ_CLOSE(3C)
NAME
mq_close - close a message queue
SYNOPSIS
#include <mqueue.h>
int mq_close(
mqd_t mqdes);
DESCRIPTION
The
mq_close() function removes the association between the message
queue descriptor,
mqdes, and its message queue. The results of using
this message queue descriptor after successful return from this
mq_close(), and until the return of this message queue descriptor
from a subsequent
mq_open(3C), are undefined.
If the process (or thread) has successfully attached a notification
request to the message queue via this
mqdes, this attachment is
removed and the message queue is available for another process to
attach for notification.
RETURN VALUES
Upon successful completion,
mq_close() returns
0; otherwise, the
function returns
-1 and sets
errno to indicate the error condition.
ERRORS
The
mq_close() function will fail if:
EBADF The
mqdes argument is an invalid message queue descriptor.
ENOSYS The
mq_open() function is not supported by the system.
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------+
|Interface Stability | Committed |
+--------------------+-------------------+
|MT-Level | MT-Safe |
+--------------------+-------------------+
|Standard | See
standards(7). |
+--------------------+-------------------+
SEE ALSO
mq_notify(3C),
mq_open(3C),
mq_unlink(3C),
mqueue.h(3HEAD),
attributes(7),
standards(7)NOTES
Solaris 2.6 was the first release to support the Asynchronous Input
and Output option. Prior to this release, this function always
returned
-1 and set
errno to
ENOSYS.
February 5, 2008 MQ_CLOSE(3C)
