mq_close(3) — Linux manual page

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)

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Linux man-pages 6.9.1          2024-05-02                    mq_close(3)

Pages that refer to this page: mq_getattr(3), mq_notify(3), mq_open(3), mq_receive(3), mq_send(3), mq_unlink(3), mq_overview(7)

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