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mq_close(3) | Library Functions Manual | mq_close(3) |
NAME¶
mq_close - close a message queue descriptor
LIBRARY¶
Real-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 | MT-Safe |
STANDARDS¶
POSIX.1-2008.
HISTORY¶
POSIX.1-2001.
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)
2023-03-30 | Linux man-pages 6.04 |