CDE/cde/programs/dtscreen/usleep.c

/*
 * CDE - Common Desktop Environment
 *
 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
 *
 * These libraries and programs are free software; you can
 * redistribute them and/or modify them under the terms of the GNU
 * Lesser General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * These libraries and programs are distributed in the hope that
 * they will be useful, but WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with these libraries and programs; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA 02110-1301 USA
 */
/* $TOG: usleep.c /main/6 1998/04/06 13:32:38 mgreess $ */
/*
 */
/*                                                                      *
 * (c) Copyright 1993, 1994 Hewlett-Packard Company                     *
 * (c) Copyright 1993, 1994 International Business Machines Corp.       *
 * (c) Copyright 1993, 1994 Sun Microsystems, Inc.                      *
 * (c) Copyright 1993, 1994 Novell, Inc.                                *
 */
/*-
 * usleep.c - OS dependant implementation of usleep().
 *
 * Copyright (c) 1991 by Patrick J. Naughton.
 *
 * Revision History:
 * 30-Aug-90: written.
 *
 */

#include "dtscreen.h"

#if !defined(_AIX) && !defined(hpV4) && !defined(__linux__) && !defined(sun) && !defined(CSRG_BASED)
int
usleep(unsigned long usec)
{
#ifdef SYSV
    poll((struct poll *) 0, (size_t) 0, usec / 1000);	/* ms resolution */
#else
    struct timeval timeout;
    timeout.tv_usec = usec % (unsigned long) 1000000;
    timeout.tv_sec = usec / (unsigned long) 1000000;
    select(0, (void *) 0, (void *) 0, (void *) 0, &timeout);
#endif
    return 0;
}
#endif /* !_AIX && !hpV4*/

/*
 * returns the number of seconds since 01-Jan-70.
 * This is used to control rate and timeout in many of the animations.
 */
long
seconds(void)
{
    struct timeval now;

    gettimeofday(&now, (struct timezone *) 0);
    return now.tv_sec;
}