SYNOPSISIn mqueue.h Ft int Fn mq_close mqd_t mqdes
DESCRIPTIONThe Fn mq_close system call removes the association between the message queue descriptor, Fa mqdes , and its message queue. The results of using this message queue descriptor after successful return from this Fn mq_close , and until the return of this message queue descriptor from a subsequent Fn mq_open , are undefined.
If the process has successfully attached a notification request to the message queue via this Fa mqdes , this attachment will be removed, and the message queue is available for another process to attach for notification.
RETURN VALUESRv -std
ERRORSThe Fn mq_close system call will fail if:
- Bq Er EBADF
- The Fa mqdes argument is not a valid message queue descriptor.
STANDARDSThe Fn mq_close system call conforms to St -p1003.1-2004 .
HISTORYSupport for POSIX message queues first appeared in Fx 7.0 .
COPYRIGHTPortions 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.