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mq_close(3)

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



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).

       allbox;  lb  lb  lb  l  l  l.   Interface Attribute Value T{ mq_close()
       T}   Thread safety MT-Safe

CONFORMING TO
       POSIX.1-2001, POSIX.1-2008.

NOTES
       All open message queues are automatically closed  on  process  termina‐
       tion, 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
       This page is part of release 5.02 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                             2017-09-15                       MQ_CLOSE(3)
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