.\".\" Copyright (C) 1997 Jerry Epplin.  All rights reserved..\".\" Permission is granted to make and distribute verbatim copies of this.\" manual provided the copyright notice and this permission notice are.\" preserved on all copies..\".\" Permission is granted to copy and distribute modified versions of this.\" manual under the conditions for verbatim copying, provided that the.\" entire resulting derived work is distributed under the terms of a.\" permission notice identical to this one.\" .\" The author assumes no responsibility for errors or omissions, or for.\" damages resulting from the use of the information contained herein..\" .\" Formatted or processed versions of this manual, if unaccompanied by.\" the source, must acknowledge the copyright and authors of this work..\".TH RT_MQ_INIT 2 "26 July 1997" "rt_ipc" "rt_ipc".SH NAMErt_mq_init \- create a message queue.SH SYNOPSIS.nf.B #define MODULE.B #include <linux/module.h> .B #include <linux/kernel.h> .B #include <linux/version.h> .B #include <linux/errno.h> .B #include "rt_ipc.h".fi.sp.BI "int rt_mq_init(rt_mq_t *" mq ", int " max_msgs ", int " msg_size ");.SH DESCRIPTION.B rt_mq_initis called to initialize a real-time message queue.  A message queue canbe used for communicating data among real-time tasks.  Communicationbetween Linux processes and real-time tasks is done using the standardReal-Time Linux RT-FIFO facilities..PP.I mqmust point to a statically allocated structure..I max_msgsis the maximum number of messages allowed, and.I msg_sizeis the size of each message..SH "RETURN VALUE"On success, 0 is returned.  On failure, a negative value is returnedas described below..SH ERRORS.IP \fB-EINVAL\fP.I msg_sizeis negative, or.I max_msgsis less than one..IP \fB-ENOMEM\fPSpace could not be allocated for the message queue..SH "BUGS"Priority inheritance is not currently supported..SH "AUTHOR"Jerry Epplin <JerryEpplin@worldnet.att.net>.SH "SEE ALSO".BR rt_mq_destroy (2),.BR rt_mq_receive (2),.BR rt_mq_send (2),.BR rt_task_ipc_delete (2), .BR rt_task_ipc_init (2)