delay.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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 <sys/types.h>
#include "curses_inc.h"
/*
* The following array gives the number of tens of milliseconds per
* character for each speed as returned by gtty. Thus since 300
* baud returns a 7, there are 33.3 milliseconds per char at 300 baud.
*/
static short tmspc10[] =
{
/* 0 50 75 110 134.5 150 200 300 baud */
0, 2000, 1333, 909, 743, 666, 500, 333,
/* 600 1200 1800 2400 4800 9600 19200 38400 baud */
166, 83, 55, 41, 20, 10, 5, 2,
/* 57600, 76800, 115200, 153600, 230400 307200 baud */
2, 1, 1, 1, 1, 1,
/* 460800 baud */
1
};
/*
* Insert a delay into the output stream for "delay/10" milliseconds.
* Round up by a half a character frame, and then do the delay.
* Too bad there are no user program accessible programmed delays.
* Transmitting pad characters slows many terminals down and also
* loads the system.
*/
int
_delay(int delay, int (*outc)(char))
{
int mspc10;
char pc;
int outspeed;
/* if there is no pad character, then just return */
if (no_pad_char)
goto good;
#ifdef SYSV
outspeed = _BRS(PROGTTYS);
#else /* SYSV */
outspeed = _BR(PROGTTY);
#endif /* SYSV */
if (outspeed <= 0 || outspeed >=
(sizeof (tmspc10) / sizeof (tmspc10[0])))
return (ERR);
mspc10 = tmspc10[outspeed];
delay += mspc10 / 2;
if (pad_char)
pc = *pad_char;
else
pc = 0;
for (delay /= mspc10; delay-- > 0; )
(*outc)(pc);
good:
return (OK);
}