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#include "global.h"
#include "net_shm.h"
/**********************************/
/*** Fonctions de support dates ***/
/**********************************/
/* calcule t2-t1, en secondes. Juste (mais negatif) meme si t1>t2 */
Public
double diffDates(struct timeval t1, struct timeval t2)
{
double d = (double)t2.tv_sec - (double)t1.tv_sec;
d += ((double)t2.tv_usec - (double)t1.tv_usec)*1e-6;
return d;
}
/* ajoute d secondes a la date. OK meme si d<0 */
Public
void addToDate(struct timeval *t, double d)
{
double f = floor(d);
t->tv_sec += (signed long) f;
t->tv_usec += (u_int32) ((d-f)*1e6);
while (t->tv_usec >= 1000000) {
t->tv_usec -= 1000000;
t->tv_sec++;
}
}
/* calcule une nouvelle date pour le assume_at de la propriete
* et met le last_seen a "maintenant"
*/
Public
void resetDates(Property * p)
{
struct timeval now;
gettimeofday(&now, NULL);
p->last_seen = now;
p->assume_at = now;
addToDate(&p->assume_at, MIN_ASSUME_DELAY
+ rand()/(RAND_MAX+1.0)*(MAX_ASSUME_DELAY-MIN_ASSUME_DELAY));
}
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