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Man Pages


Manual Reference Pages  -  MQ_CLOSE (2)

NAME

mq_close - close a message queue (REALTIME)

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
Standards
History
Copyright

LIBRARY


.Lb librt

SYNOPSIS


.In mqueue.h int mq_close mqd_t mqdes

DESCRIPTION

The mq_close system call removes 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 will be removed, and the message queue is available for another process to attach for notification.

RETURN VALUES


.Rv -std

ERRORS

The mq_close system call will fail if:
[EBADF]
  The mqdes argument is not a valid message queue descriptor.

SEE ALSO

mq_open(2), mq_unlink(2)

STANDARDS

The mq_close system call conforms to -p1003.1-2004.

HISTORY

Support for POSIX message queues first appeared in
.Fx 7.0 .

COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 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 at http://www.opengroup.org/unix/online.html.
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