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Command: mq_close | Section: 3 | Source: Digital UNIX | File: mq_close.3.gz
mq_close(3) Library Functions Manual mq_close(3)
NAME
mq_close - Closes a message queue (P1003.1b)
SYNOPSIS
#include <mqueue.h>
int mq_close (
mqd_t mqdes);
PARAMETERS
mqdes Specifies a message queue descriptor.
DESCRIPTION
Closes a message queue. This function removes the association between
the message queue descriptor, mqdes, and its open message queue de-
scription. When all message queue descriptors associated with an open
message queue description have been closed, the associated open message
queue description is removed. The message associated with the message
queue will then be deleted if mq_unlink was already called, or is
called after all processes have closed the queue.
RETURN VALUES
On successful completion, the function returns the value 0; otherwise,
the function returns the value -1 and sets errno to indicate the error.
ERRORS
The mq_close function fails under the following conditions:
[EBADF] The mqdes argument is an invalid message queue descrip-
tor.
[EFAULT] Internal virtual memory error.
RELATED INFORMATION
Functions: mq_open(3), mq_unlink(3) delim off
mq_close(3)