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/*
* (C) Finite State Machine Labs Inc. 2000 business@fsmlabs.com
*
* Released under the terms of GPL 2.
* Open RTLinux makes use of a patented process described in
* US Patent 5,995,745. Use of this process is governed
* by the Open RTLinux Patent License which can be obtained from
* www.fsmlabs.com/PATENT or by sending email to
* licensequestions@fsmlabs.com
*/
#include <stdio.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
struct timeval torig, t1, t2;
int main(void)
{
#define US(x) ( ((unsigned long long)(x).tv_sec*1000000) + (unsigned long long)(x).tv_usec )
gettimeofday(&torig, 0);
t1 = torig;
do {
gettimeofday(&t2, 0);
if (US(t2) < US(t1)) {
fprintf(stderr, "Linux time went backwards\n");
return -1;
}
t1 = t2;
} while (US(t2) < (US(torig) + (unsigned long long) 10 * 1000000));
return 0;
}
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