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You are here: manpages





MQ_CLOSE

Section: Linux Programmer's Manual (3)
Updated: 2017-09-15
Index Return to Main Contents
 

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).
InterfaceAttributeValue
mq_close() Thread safetyMT-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

This page is part of release 4.13 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
ATTRIBUTES
CONFORMING TO
NOTES
SEE ALSO
COLOPHON


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