int _gettimeofday (struct timeval * tp, void* zone)
{
(void) zone;
long long ts = tm_timestamp();
tp->tv_sec = floor(ts / 1000000);
tp->tv_usec = ts % 1000000;
return 0;
}
static int l_tm_timestamp (lua_State* L)
{
lua_pushnumber(L, tm_timestamp());
return 1;
}