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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1997 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
#include <unistd.h>
#include <sys/types.h>
#include "curses_inc.h"
/*
* Code for various kinds of delays. Most of this is nonportable and
* requires various enhancements to the operating system, so it won't
* work on all systems. It is included in curses to provide a portable
* interface, and so curses itself can use it for function keys.
*/
#define NAPINTERVAL 100
/*
* Wait until the output has drained enough that it will only take
* ms more milliseconds to drain completely.
* Needs Berkeley TIOCOUTQ ioctl. Returns ERR if impossible.
*/
int
draino(int ms)
{
#ifdef TIOCOUTQ
#define _DRAINO
/* number of chars = that many ms */
long ncneeded;
/* 10 bits/char, 1000 ms/sec, baudrate in bits/sec */
ncneeded = SP->baud * ms / (10 * 1000);
/*CONSTCOND*/
while (TRUE) {
int rv; /* ioctl return value */
int ncthere = 0; /* number of chars actually in */
/* output queue */
rv = ioctl(cur_term->Filedes, TIOCOUTQ, &ncthere);
#ifdef DEBUG
if (outf)
fprintf(outf, "draino: rv %d, ncneeded %d, "
"ncthere %d\n", rv, ncneeded, ncthere);
#endif /* DEBUG */
if (rv < 0)
return (ERR); /* ioctl didn't work */
if (ncthere <= ncneeded)
return (OK);
(void) napms(NAPINTERVAL);
}
#else /* TIOCOUTQ */
#ifdef TCSETAW
#define _DRAINO
/*
* SYSV simulation - waits until the entire queue is empty,
* then sets the state to what it already is (e.g. no-op).
* Unfortunately this only works if ms is zero.
*/
if (ms <= 0) {
#ifdef SYSV
if (prog_istermios < 0) {
int i;
PROGTTY.c_lflag = PROGTTYS.c_lflag;
PROGTTY.c_oflag = PROGTTYS.c_oflag;
PROGTTY.c_iflag = PROGTTYS.c_iflag;
PROGTTY.c_cflag = PROGTTYS.c_cflag;
for (i = 0; i < NCC; i++)
PROGTTY.c_cc[i] = PROGTTYS.c_cc[i];
(void) ioctl(cur_term->Filedes, TCSETAW, &PROGTTY);
} else
(void) ioctl(cur_term->Filedes, TCSETSW, &PROGTTYS);
#else /* SYSV */
(void) ioctl(cur_term->Filedes, TCSETAW, &PROGTTY);
#endif /* SYSV */
return (OK);
} else
return (ERR);
#endif /* TCSETAW */
#endif /* TIOCOUTQ */
#ifndef _DRAINO
/*
* No way to fake it, so we return failure.
* Used #else to avoid warning from compiler about unreached stmt
*/
return (ERR);
#endif /* _DRAINO */
/*NOTREACHED*/
}
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