MQ_CLOSE

Section: Linux Programmer's Manual (3)
Updated: 2017-09-15
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NAME

mq_close - close a message queue descriptor  

SYNOPSIS

#include <mqueue.h>

int mq_close(mqd_t mqdes);

Link with -lrt.  

DESCRIPTION

mq_close() closes the message queue descriptor mqdes.

If the calling process has attached a notification request (see (mq_notify(3)) to this message queue via mqdes, then this request is removed, and another process can now attach a notification request.  

RETURN VALUE

On success mq_close() returns 0; on error, -1 is returned, with errno set to indicate the error.  

ERRORS

EBADF

The message queue descriptor specified in mqdes is invalid.

 

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

Interface	Attribute	Value
mq_close()	Thread safety	MT-Safe

 

CONFORMING TO

POSIX.1-2001, POSIX.1-2008.  

NOTES

All open message queues are automatically closed on process termination, or upon execve(2).  

SEE ALSO

mq_getattr(3), mq_notify(3), mq_open(3), mq_receive(3), mq_send(3), mq_unlink(3), mq_overview(7)  

COLOPHON

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Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

ERRORS

ATTRIBUTES

CONFORMING TO

NOTES

SEE ALSO

COLOPHON