mq_close(3) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON

MQ_CLOSE(3)             Linux Programmer's Manual            MQ_CLOSE(3)

NAME         top

       mq_close - close a message queue descriptor

SYNOPSIS         top

       #include <mqueue.h>

       int mq_close(mqd_t mqdes);

       Link with -lrt.

DESCRIPTION         top

       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         top

       On success mq_close() returns 0; on error, -1 is returned, with
       errno set to indicate the error.

ERRORS         top

       EBADF  The message queue descriptor specified in mqdes is
              invalid.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).

       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │Interface                             Attribute     Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │mq_close()                            │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

CONFORMING TO         top

       POSIX.1-2001, POSIX.1-2008.

NOTES         top

       All open message queues are automatically closed on process
       termination, or upon execve(2).

SEE ALSO         top

       mq_getattr(3), mq_notify(3), mq_open(3), mq_receive(3),
       mq_send(3), mq_unlink(3), mq_overview(7)

COLOPHON         top

       This page is part of release 5.11 of the Linux man-pages project.
       A description of the project, information about reporting bugs,
       and the latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.

Linux                          2021-03-22                    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)