MQ_CLOSE(3) - man page online | library functions

Close a message queue descriptor.

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 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 For an explanation of the terms used in this section, see attributes(7). ┌───────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├───────────┼───────────────┼─────────┤ │mq_close() │ Thread safety │ MT-Safe │ └───────────┴───────────────┴─────────┘
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_over‐ view(7)
COLOPHON This page is part of release 4.04 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
Linux 2015-08-08 MQ_CLOSE(3)
This manual Reference Other manuals
mq_close(3) referred by mq_getattr(3) | mq_notify(3) | mq_open(3) | mq_overview(7) | mq_receive(3) | mq_send(3) | mq_unlink(3)
refer to attributes(7) | execve(2) | mq_getattr(3) | mq_notify(3) | mq_open(3) | mq_receive(3) | mq_send(3) | mq_unlink(3)