lib_napms.c revision 56639 
1/****************************************************************************
2 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
3 *                                                                          *
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5 * copy of this software and associated documentation files (the            *
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9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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22 *                                                                          *
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28
29/****************************************************************************
30 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32 ****************************************************************************/
33
34
35/*
36 *	lib_napms.c
37 *
38 *	The routine napms.
39 *
40 */
41
42#include <curses.priv.h>
43
44#if HAVE_NANOSLEEP
45#include <time.h>
46#elif USE_FUNC_POLL
47#include <stropts.h>
48#include <poll.h>
49#if HAVE_SYS_TIME_H
50#include <sys/time.h>
51#endif
52#elif HAVE_SELECT
53#if HAVE_SYS_TIME_H && HAVE_SYS_TIME_SELECT
54#include <sys/time.h>
55#endif
56#if HAVE_SYS_SELECT_H
57#include <sys/select.h>
58#endif
59#endif
60
61MODULE_ID("$Id: lib_napms.c,v 1.6 1999/10/21 23:01:41 tom Exp $")
62
63int napms(int ms)
64{
65	T((T_CALLED("napms(%d)"), ms));
66
67#if HAVE_NANOSLEEP
68	{
69		struct timespec ts;
70		ts.tv_sec = ms / 1000;
71		ts.tv_nsec = (ms % 1000) * 1000000;
72		nanosleep(&ts, NULL);
73	}
74#elif USE_FUNC_POLL
75	{
76		struct pollfd fds[1];
77		poll(fds, 0, ms);
78	}
79#elif HAVE_SELECT
80	{
81		struct timeval tval;
82		tval.tv_sec = ms / 1000;
83		tval.tv_usec = (ms % 1000) * 1000;
84		select(0, NULL, NULL, NULL, &tval);
85	}
86#endif
87	returnCode(OK);
88}
89