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.\" This -*- nroff -*- file has been generated from
.\" DocBook SGML with docbook-to-man on Debian GNU/Linux.
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.TH "rtf_destroy" "3"
.SH "NAME"
rtf_destroy \(em remove a realtime fifo created with \fBrtf_create(3)\fP
.SH "SYNOPSIS"
.PP
.nf
.ta 8n 16n 24n 32n 40n 48n 56n 64n 72n
#include <asm/rtl_fifo.h>
int \fBrtf_destroy\fP(unsigned int \fBfifo\fR);
.fi
.SH "DESCRIPTION"
.PP
\fBrtf_destroy\fP removes a realtime fifo (RT-FIFO) previously created with \fBrtf_create(3)\fP. \fBfifo\fR is then available for re-use by another call to \fBrtf_create(3)\fP. All handlers
for the FIFO are uninstalled.
.PP
The RT-FIFO is a mechanism, implemented as a character device, to communicate between realtime tasks and ordinary Linux processes. The rtf_* functions are used by the realtime tasks; Linux processes use standard character device accesed by functions such as \fBread(3)\fP, \fBwrite(3)\fP and
\fBselect(3)\fP.
.SH "RETURN VALUE"
.PP
On success, \fBcount\fR is returned. On failure, a
negative value is returned as described below.
.SH "ERRORS"
.IP "-ENODEV" 10
\fBfifo\fR is greater than or equal to RTF_NO.
.IP "-EINVAL" 10
\fBfifo\fR is not a valid RT-FIFO identifier.
.SH "NOTES"
.PP
This function should only be used in the Linux \fBcleanup_module()\fP context or in user space via PSC library (please see below).
.PP
\fBrtf_create\fP is a system call made available by PSC,
the user-level real-time signal library. It can be called from user space,
but not from PSC handlers.
.SH "SEE ALSO"
\fIrtf_create(3) (link to URL rtf_create.3.html) \fR, \fIrtf_create_handler(3) (link to URL rtf_create_handler.3.html) \fR, \fIrtf_get(3) (link to URL rtf_get.3.html) \fR, \fIrtf_put(3) (link to URL rtf_put.3.html) \fR
.PP
\(co1997 Jerry Epplin.
.PP
Modifications for RTLinux 2.x and 3.x by Michael Barabanov. \(co2001 FSMLabs Inc.
.PP
All rights reserved.
...\" created by instant / docbook-to-man, Wed 13 Jun 2001, 17:58
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