/* should detect a problem in settimeofday 
 * we set the time to the time we've just got
 * then we read the time, we should obtain a time just little bit after what we set
 * You need to be root to run this test
 */ 

#include <stdio.h>
#include <sys/time.h>
#include <signal.h>

#define USEC_PER_SEC	1000000
#define timerdiff(a,b) ((float)((a)->tv_sec - (b)->tv_sec) + \
                         (float)((a)->tv_usec - (b)->tv_usec)/USEC_PER_SEC)

main()
{
	struct timeval treq, tnew;
	float diff;

//	raise(SIGSTOP);
	/* do the test */
	gettimeofday(&treq, NULL);
	settimeofday(&treq, NULL);
	gettimeofday(&tnew, NULL);

	/* interpret the result */
	diff = timerdiff(&tnew, &treq);
	printf("requested:\t%lds %ldns\n"
               "new:\t\t%lds %ldns\n"	
               "diff is %12.9fsec\n",
		treq.tv_sec, treq.tv_usec,
		tnew.tv_sec, tnew.tv_usec,
		diff);



}