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/*
* Copyright (c) 1999-2004 Damien Miller <djm@mindrot.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "includes.h"
#include <sys/types.h>
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <err.h>
#include <string.h>
#include <signal.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
int
nanosleep(const struct timespec *req, struct timespec *rem)
{
int rc, saverrno;
extern int errno;
struct timeval tstart, tstop, tremain, time2wait;
TIMESPEC_TO_TIMEVAL(&time2wait, req);
(void) gettimeofday(&tstart, NULL);
rc = select(0, NULL, NULL, NULL, &time2wait);
if (rc == -1) {
saverrno = errno;
(void) gettimeofday (&tstop, NULL);
errno = saverrno;
tremain.tv_sec = time2wait.tv_sec -
(tstop.tv_sec - tstart.tv_sec);
tremain.tv_usec = time2wait.tv_usec -
(tstop.tv_usec - tstart.tv_usec);
tremain.tv_sec += tremain.tv_usec / 1000000L;
tremain.tv_usec %= 1000000L;
} else {
tremain.tv_sec = 0;
tremain.tv_usec = 0;
}
if (rem != NULL)
TIMEVAL_TO_TIMESPEC(&tremain, rem);
return(rc);
}
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