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35 .Nd "close a message queue (REALTIME)"
41 .Fn mq_close "mqd_t mqdes"
45 system call removes the association between the message queue descriptor,
47 and its message queue.
48 The results of using this message queue descriptor
49 after successful return from this
51 and until the return of this message queue descriptor from a subsequent
55 If the process has successfully attached a notification request to the
56 message queue via this
58 this attachment will be removed, and the message queue is available for
59 another process to attach for notification.
71 argument is not a valid message queue descriptor.
79 system call conforms to
84 message queues first appeared in