xref: /titanic_44/usr/src/lib/libcurses/screen/delay_out.c (revision 40e5e17b3361b3eea56a9723071c406894a20b78)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 /*
31  * University Copyright- Copyright (c) 1982, 1986, 1988
32  * The Regents of the University of California
33  * All Rights Reserved
34  *
35  * University Acknowledgment- Portions of this document are derived from
36  * software developed by the University of California, Berkeley, and its
37  * contributors.
38  */
39 
40 #pragma ident	"%Z%%M%	%I%	%E% SMI"
41 
42 /*LINTLIBRARY*/
43 
44 /*
45  * Code for various kinds of delays.  Most of this is nonportable and
46  * requires various enhancements to the operating system, so it won't
47  * work on all systems.  It is included in curses to provide a portable
48  * interface, and so curses itself can use it for function keys.
49  */
50 
51 #include	<sys/types.h>
52 #include	"curses_inc.h"
53 
54 /*
55  * Delay the output for ms milliseconds.
56  * Note that this is NOT the same as a high resolution sleep.  It will
57  * cause a delay in the output but will not necessarily suspend the
58  * processor.  For applications needing to sleep for 1/10th second,
59  * this is not a usable substitute.  It causes a pause in the displayed
60  * output, for example, for the eye wink in snake.  It is disrecommended
61  * for "delay" to be much more than 1/2 second, especially at high
62  * baud rates, because of all the characters it will output.  Note
63  * that due to system delays, the actual pause could be even more.
64  * You can't get a decent pac-man game with this routine.
65  */
66 
67 int
68 delay_output(int ms)
69 {
70 	extern	int	_outchar(char);
71 
72 	return (_delay(ms * 10, _outchar));
73 }
74