bionic (3) mq_close.3.gz

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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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