Manpages - mq_close.3

mq_close - close a message queue descriptor

  #include <mqueue.h>

  int mq_close(mqd_t mqdes);

Link with -lrt.

*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.

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

EBADF

The message queue descriptor specified in mqdes is invalid.

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

POSIX.1-2001, POSIX.1-2008.

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

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

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