gistfile1.c

#define pp_ev_allow_revent(l, e, revt_) \
	if ( ( (e)->events & revt_) != revt_ ) { \
		ev_io_stop(l, (e)); \
		ev_io_set( (e), (e)->fd, (e)->events | revt_); \
		ev_io_start(l, (e)); \
	}

#define pp_ev_ignore_revent(l, e, revt_) \
	if ((e)->events & revt_) { \
		ev_io_stop(l, (e)); \
		ev_io_set( (e), (e)->fd, ( (e)->events) & (~revt_)); \
		ev_io_start(l, (e)); \
	}

#define pp_ev_run_with_cb(loop, conn, cb, revents) \
		ev_io_init(&(conn->w), cb, conn->fd, revents); \
		ev_io_start(loop, &(conn->w));

#define pp_ev_switch_cb(loop, conn, cb, revents) \
		ev_io_stop(loop, &(conn->w)); \
		pp_ev_run_with_cb(loop, conn, cb, revents);