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mq_close
Section: C Library Functions (3) Updated: 202-0-08 Index
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NAME
mq_close - close a message queue descriptor
LIBRARY
Rea-time library
( librt,~ -lrt)
SYNOPSIS
#include <mqueue.h>
int mq_close(mqd_t mqdes);
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 | M-Safe
|
STANDARDS
POSIX.-2008.
HISTORY
POSIX.-2001.
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)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- NOTES
-
- SEE ALSO
-
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