table of contents
MQ_CLOSE(3) | Linux Programmer's Manual | MQ_CLOSE(3) |
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¶
This page is part of release 4.15 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/.
2017-09-15 | Linux |