mq_close - close a message queue descriptor
#include <mqueue.h>
int mq_close(mqd_t mqdes);
Link with -lrt.
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.
On success mq_close() returns 0; on error, -1 is returned, with
errno set to indicate the error.
- EBADF
- The message queue descriptor specified in mqdes is invalid.
For an explanation of the terms used in this section, see attributes(7).
| Interface |
Attribute |
Value |
| mq_close () |
Thread safety |
MT-Safe |
POSIX.1-2001, POSIX.1-2008.
All open message queues are automatically closed on process termination, or upon
execve(2).
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