ncurses/tinfo/lib_napms.c

/****************************************************************************
 * Copyright 2020,2023 Thomas E. Dickey                                     *
 * Copyright 1998-2014,2017 Free Software Foundation, Inc.                  *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

/****************************************************************************
 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 *     and: Thomas E. Dickey                        1996-on                 *
 *     and: Juergen Pfeifer                         2009                    *
 ****************************************************************************/

/*
 *	lib_napms.c
 *
 *	The routine napms.
 *
 *	(This file was originally written by Eric Raymond; however except for
 *	comments, none of the original code remains - T.Dickey).
 */

#include <curses.priv.h>

#if HAVE_NANOSLEEP
#include <time.h>
#if HAVE_SYS_TIME_H
#include <sys/time.h>		/* needed for MacOS X DP3 */
#endif
#endif

MODULE_ID("$Id: lib_napms.c,v 1.28 2023/09/16 16:09:33 tom Exp $")

NCURSES_EXPORT(int)
NCURSES_SP_NAME(napms) (NCURSES_SP_DCLx int ms)
{
    T((T_CALLED("napms(%d)"), ms));

    if (ms > MAX_DELAY_MSECS)
	ms = MAX_DELAY_MSECS;

#ifdef USE_TERM_DRIVER
    CallDriver_1(SP_PARM, td_nap, ms);
#else /* !USE_TERM_DRIVER */
#if NCURSES_SP_FUNCS
    (void) sp;
#endif
#if HAVE_NANOSLEEP
    {
	struct timespec request, remaining;
	request.tv_sec = ms / 1000;
	request.tv_nsec = (ms % 1000) * 1000000;
	while (nanosleep(&request, &remaining) == -1
	       && errno == EINTR) {
	    request = remaining;
	}
    }
#elif defined(_NC_WINDOWS)
    Sleep((DWORD) ms);
#else
    _nc_timed_wait(0, 0, ms, (int *) 0 EVENTLIST_2nd(0));
#endif
#endif /* !USE_TERM_DRIVER */

    returnCode(OK);
}

#if NCURSES_SP_FUNCS
NCURSES_EXPORT(int)
napms(int ms)
{
    return NCURSES_SP_NAME(napms) (CURRENT_SCREEN, ms);
}
#endif