public void ToTimespan()
{
var tv = new timeval { tv_sec = 4, tv_usec = 20000 };
var ts = tv.ToTimeSpan();
Assert.AreEqual(tv.tv_sec, ts.Seconds);
Assert.AreEqual(tv.tv_usec, ts.Milliseconds * 1000);
}
static extern unsafe int event_add(IntPtr evnt, timeval* tv);
static extern void bufferevent_set_timeouts(IntPtr bev, ref timeval timeoutread, ref timeval timeoutwrite);
private static extern int event_base_gettimeofday_cached(IntPtr event_base, out timeval timeval);
private static extern int event_base_loopexit(IntPtr event_base, ref timeval timeval);
static unsafe extern int event_add(IntPtr evnt, timeval* tv);