(PECL pthreads >= 2.0.0) Acquire Mutex final

(PECL eio >= 0.0.1dev) Set maximum parallel threads

(PECL libevent >= 0.0.5) Assign a priority to an event.

(PECL libevent >= 0.0.2) Alias of

(PECL ev >= 0.2.0) Returns the loop responsible for the watcher

(PECL ev >= 0.2.0) Configures the watcher

(PHP 4, PHP 5, PHP 7) Send a signal to a process

(PECL ev >= 0.2.0) Returns the time when the last iteration of the default event loop has started.

(PHP 4, PHP 5, PHP 7) Return info about a group by group id

(PECL pthreads >= 2.0.0) Signal a Condition