(PECL ev >= 0.2.0) Resume previously suspended default event loop

(PECL ev >= 0.2.0) Creates EvIdle watcher object associated with the current event loop instance

(PECL ev >= 0.2.0) Creates an instance of EvEmbed watcher associated with the current EvLoop object.

(PECL ev >= 0.2.0) Constructs the EvFork watcher object

(PECL ev >= 0.2.0) Sets new callback for the watcher