(PECL eio >= 0.0.1dev) Returns number of not-yet handled requests

(PECL ev >= 0.2.0) Create stopped EvEmbed watcher object

(PECL pthreads >= 2.0.0) Creates a new Pool of Workers

(PECL sync >= 1.0.0) Unlocks the mutex public

(PECL eio >= 0.0.1dev) Get file status resource

(PECL pthreads >= 2.0.0) State Detection public

(PECL pthreads >= 2.0.8) Mark an object as garbage

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Execute a command and open file pointers for input/output

(PHP 5, PHP 7) Change the priority of the current process

(PECL sync >= 1.0.0) Releases a read lock