The EvWatcher class

(PECL ev >= 0.2.0)

Введение

EvWatcher is a base class for all watchers( EvCheck , EvChild etc.). Since EvWatcher 's constructor is abstract , one can't(and don't need to) create EvWatcher objects directly.

Обзор классов

abstract EvWatcher {
/* Свойства */
public $is_active ;
public $data ;
public $is_pending ;
public $priority ;
/* Методы */
public int clear ( void )
abstract public __construct ( void )
public void feed ( int $revents )
public EvLoop getLoop ( void )
public void invoke ( int $revents )
public bool keepalive ([ bool $value ] )
public void setCallback ( callable $callback )
public void start ( void )
public void stop ( void )
}

Свойства

is_active - Readonly . TRUE if the watcher is active. FALSE otherwise.

data - User custom data associated with the watcher

is_pending - Readonly .TRUE if the watcher is pending, i.e. it has outstanding events, but its callback has not yet been invoked. FALSE otherwise. As long, as a watcher is pending(but not active), one must not change its priority.

priority - Integer between Ev::MINPRI and Ev::MAXPRI . Pending watchers with higher priority will be invoked before watchers with lower priority, but priority will not keep watchers from being executed(except for EvIdle watchers). EvIdle watchers provide functionality to suppress invocation when higher priority events are pending.

Содержание

• EvWatcher::clear — Clear watcher pending status
• EvWatcher::__construct — Abstract constructor of a watcher object
• EvWatcher::feed — Feeds the given revents set into the event loop
• EvWatcher::getLoop — Returns the loop responsible for the watcher
• EvWatcher::invoke — Invokes the watcher callback with the given received events bit mask
• EvWatcher::keepalive — Configures whether to keep the loop from returning
• EvWatcher::setCallback — Sets new callback for the watcher
• EvWatcher::start — Starts the watcher
• EvWatcher::stop — Stops the watcher

User Contributed Notes

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Описание класса evwatcher, примеры использования класса evwatcher.

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