(PECL eio >= 0.0.1dev) Returns number of threads currently in use

(PECL pthreads >= 2.0.0) Submits an object for execution

(PHP 5 >= 5.3.0, PHP 7) Calls signal handlers for pending signals

(PECL pthreads >= 2.0.0) Submits an object for execution

(PECL libevent >= 0.0.1) Assign a priority to a buffered event

(PECL pthreads >= 2.0.0) State Detection public

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

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

(PECL eio >= 0.0.1dev) Cancels a request void

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