bionic (3) mq_close.3posix.gz

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PROLOG
       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.


NAME
       mq_close — close a message queue (REALTIME)


SYNOPSIS
       #include <mqueue.h>

       int mq_close(mqd_t mqdes);


DESCRIPTION
       The mq_close() function shall remove the association between the message queue descriptor, mqdes, and its
       message queue. The results of using this message queue  descriptor  after  successful  return  from  this
       mq_close(),  and  until  the  return  of  this  message queue descriptor from a subsequent mq_open(), are
       undefined.

       If the process has successfully attached a notification request to the message queue via this mqdes, this
       attachment  shall  be  removed,  and  the  message  queue  is available for another process to attach for
       notification.


RETURN VALUE
       Upon successful completion, the mq_close() function shall return a value of zero; otherwise, the function
       shall return a value of −1 and set errno to indicate the error.


ERRORS
       The mq_close() function shall fail if:

       EBADF  The mqdes argument is not a valid message queue descriptor.

       The following sections are informative.


EXAMPLES
       None.


APPLICATION USAGE
       None.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       mq_open(), mq_unlink(), msgctl(), msgget(), msgrcv(), msgsnd()

       The Base Definitions volume of POSIX.1‐2008, <mqueue.h>


       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition,
       Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open  Group  Base
       Specifications  Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc
       and The Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In  the  event
       of  any  discrepancy between this version and the original IEEE and The Open Group Standard, the original
       IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at
       http://www.unix.org/online.html .

       Any  typographical  or formatting errors that appear in this page are most likely to have been introduced
       during  the  conversion  of  the  source  files  to  man  page  format.  To  report  such   errors,   see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .