MQ_CLOSE
Section: Linux Programmer's Manual (3)
Updated: 2020-08-13
Page Index
NAME
mq_close - close a message queue descriptor
SYNOPSIS
#include <mqueue.h>
int mq_close(mqd_t mqdes);
Link with -lrt.
DESCRIPTION
mq_close()
closes the message queue descriptor
mqdes.
If the calling process has attached a notification request (see
(mq_notify(3))
to this message queue via
mqdes,
then this request is removed,
and another process can now attach a notification request.
RETURN VALUE
On success
mq_close()
returns 0; on error, -1 is returned, with
errno
set to indicate the error.
ERRORS
- EBADF
-
The message queue descriptor specified in
mqdes
is invalid.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
mq_close()
| Thread safety | MT-Safe
|
CONFORMING TO
POSIX.1-2001, POSIX.1-2008.
NOTES
All open message queues are automatically closed on process termination,
or upon
execve(2).
SEE ALSO
mq_getattr(3),
mq_notify(3),
mq_open(3),
mq_receive(3),
mq_send(3),
mq_unlink(3),
mq_overview(7)
COLOPHON
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