(PECL sync >= 1.0.0) Waits for a read lock

(PECL eio >= 0.0.1dev) Calls Linux' syncfs syscall, if available

(PECL pthreads >= 2.0.0) Release Mutex final

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

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

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

(PECL eio >= 0.0.1dev) Set group limit void

(PECL ev >= 0.2.0) Abstract constructor of a watcher object

Examples: protected method example: protected methods can only be executed by one Thread at a time.

(PECL pthreads >= 2.0.0) Identification public