evSelectFD
int evSelectFD __P((evContext, int, int, evFileFunc, void *, evFileID *));
if (evSelectFD(opaqueCtx, fd, EV_READ, readable, new, &new->file) < 0)
if (evSelectFD(opaqueCtx, fd, EV_WRITE, writable, new, &new->file) < 0)