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 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 descriptor specified in mqdes is invalid.

ATTRIBUTES¶

Multithreading (see pthreads(7))¶

The mq_close() function is thread-safe.

CONFORMING TO¶

POSIX.1-2001.

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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