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mq_close(3p) — Linux manual page

MQ_CLOSE(3P)            POSIX Programmer's ManualMQ_CLOSE(3P)

PROLOG        top

       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        top

       mq_close — close a message queue (REALTIME)

SYNOPSIS        top

       #include <mqueue.h>       int mq_close(mqd_tmqdes);

DESCRIPTION        top

       Themq_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 thismq_close(), and until the return of this message       queue descriptor from a subsequentmq_open(), are undefined.       If the process has successfully attached a notification request to       the message queue via thismqdes, this attachment shall be       removed, and the message queue is available for another process to       attach for notification.

RETURN VALUE        top

       Upon successful completion, themq_close() function shall return a       value of zero; otherwise, the function shall return a value of -1       and seterrno to indicate the error.

ERRORS        top

       Themq_close() function shall fail if:EBADFThemqdes argument is not a valid message queue descriptor.The following sections are informative.

EXAMPLES        top

       None.

APPLICATION USAGE        top

       None.

RATIONALE        top

       None.

FUTURE DIRECTIONS        top

       None.

SEE ALSO        top

mq_open(3p),mq_unlink(3p),msgctl(3p),msgget(3p),msgrcv(3p),msgsnd(3p)       The Base Definitions volume of POSIX.1‐2017,mqueue.h(0p)

COPYRIGHT        top

       Portions of this text are reprinted and reproduced in electronic       form from IEEE Std 1003.1-2017, Standard for Information       Technology -- Portable Operating System Interface (POSIX), The       Open Group Base Specifications Issue 7, 2018 Edition, Copyright       (C) 2018 by the Institute of Electrical and Electronics Engineers,       Inc and The Open Group.  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 athttp://www.opengroup.org/unix/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, seehttps://www.kernel.org/doc/man-pages/reporting_bugs.html .IEEE/The Open Group                2017MQ_CLOSE(3P)

Pages that refer to this page:mqueue.h(0p), _Exit(3p), mq_open(3p), mq_unlink(3p), msgctl(3p), msgget(3p), msgrcv(3p), msgsnd(3p)

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