static struct timeval genesis;
static unsigned long ns_granularity;
-unsigned long utime_since(struct timeval *s, struct timeval *e)
+unsigned long long utime_since(struct timeval *s, struct timeval *e)
{
long sec, usec;
-
+ unsigned long long ret;
+
sec = e->tv_sec - s->tv_sec;
usec = e->tv_usec - s->tv_usec;
if (sec > 0 && usec < 0) {
usec += 1000000;
}
- sec *= (double) 1000000;
-
- return sec + usec;
+ /*
+ * time warp bug on some kernels?
+ */
+ if (sec < 0 || (sec == 0 && usec < 0))
+ return 0;
+
+ ret = sec * 1000000ULL + usec;
+
+ return ret;
}
-unsigned long utime_since_now(struct timeval *s)
+unsigned long long utime_since_now(struct timeval *s)
{
struct timeval t;
unsigned long mtime_since(struct timeval *s, struct timeval *e)
{
- long sec, usec;
+ long sec, usec, ret;
sec = e->tv_sec - s->tv_sec;
usec = e->tv_usec - s->tv_usec;
usec += 1000000;
}
- sec *= (double) 1000;
- usec /= (double) 1000;
+ sec *= 1000UL;
+ usec /= 1000UL;
+ ret = sec + usec;
+
+ /*
+ * time warp bug on some kernels?
+ */
+ if (ret < 0)
+ ret = 0;
- return sec + usec;
+ return ret;
}
unsigned long mtime_since_now(struct timeval *s)