(PECL ev >= 0.2.0) Begin checking for events and calling callbacks for the loop

(PECL ev >= 0.2.0) Returns the set of backends that are embeddable in other event loops.

(PECL ev >= 0.2.0) Block the process for the given number of seconds.

(PECL ev >= 0.2.0) Returns recursion depth

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

(PECL ev >= 0.2.0) Establishes the current time by querying the kernel, updating the time returned by EvLoop::now

(PECL ev >= 0.2.0) Suspend the loop public

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

(PECL ev >= 0.2.0) Performs internal consistency checks(for debugging)

(PECL ev >= 0.2.0) Constructs EvPeriodic watcher object