3. Library calls (functions within program libraries)
MQ_CLOSE
Section: Linux Programmer's Manual (3)Updated: 2020-08-13
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NAME
mq_close - close a message queue descriptorSYNOPSIS
#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 | 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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