'\" te .\" Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved. .\" Copyright 1989 AT&T .\" Portions Copyright (c) 1992, X/Open Company Limited All Rights Reserved .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at http://www.opengroup.org/bookstore/. .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html. This notice shall appear on any product containing this material. .TH mq_close 3C "31 Jan 2012" "SunOS 5.11" "Standard C Library Functions" .SH NAME mq_close \- close a message queue .SH SYNOPSIS .LP .nf #include \fBint\fR \fBmq_close\fR(\fBmqd_t\fR \fImqdes\fR); .fi .SH DESCRIPTION .sp .LP The \fBmq_close()\fR function removes the association between the message queue descriptor, \fImqdes\fR, and its message queue. The results of using this message queue descriptor after successful return from this \fBmq_close()\fR, and until the return of this message queue descriptor from a subsequent \fBmq_open\fR(3C), are undefined. .sp .LP If the process (or thread) has successfully attached a notification request to the message queue via this \fImqdes\fR, this attachment is removed and the message queue is available for another process to attach for notification. .SH RETURN VALUES .sp .LP Upon successful completion, \fBmq_close()\fR returns \fB0\fR; otherwise, the function returns \fB\(mi1\fR and sets \fBerrno\fR to indicate the error condition. .SH ERRORS .sp .LP The \fBmq_close()\fR function will fail if: .sp .ne 2 .mk .na \fB\fBEBADF\fR\fR .ad .RS 10n .rt The \fImqdes\fR argument is an invalid message queue descriptor. .RE .sp .ne 2 .mk .na \fB\fBENOSYS\fR\fR .ad .RS 10n .rt The \fBmq_open()\fR function is not supported by the system. .RE .SH ATTRIBUTES .sp .LP See \fBattributes\fR(5) for descriptions of the following attributes: .sp .sp .TS tab() box; lw(2.75i) |lw(2.75i) lw(2.75i) |lw(2.75i) . \fBATTRIBUTE TYPE\fR\fBATTRIBUTE VALUE\fR _ Interface StabilityCommitted _ MT-LevelMT-Safe _ StandardSee \fBstandards\fR(5). .TE .SH SEE ALSO .sp .LP \fBmqueue.h\fR(3HEAD), \fBmq_notify\fR(3C), \fBmq_open\fR(3C), \fBmq_unlink\fR(3C), \fBattributes\fR(5), \fBstandards\fR(5)