php man page for evidle

EVIDLE(3)								 1								 EVIDLE(3)

The EvIdle class

INTRODUCTION
       EvIdle  watchers  trigger  events  when	no  other events of the same or higher priority are pending ( EvPrepare , EvCheck and other EvIdle
       watchers do not count as receiving events ).

	Thus, as long as the process is busy handling sockets or timeouts(or even signals) of the same or higher priority it  will  not  be  trig-
       gered.  But  when  the process is in idle(or only lower-priority watchers are pending), the EvIdle watchers are being called once per event
       loop iteration - until stopped, that is, or the process receives more events and becomes busy again with higher priority stuff.

	Apart from keeping the process non-blocking(which is a useful on its own sometimes), EvIdle watchers are a good place to do  "pseudo-back-
       ground processing" , or delay processing stuff to after the event loop has handled all outstanding events.

	The most noticeable effect is that as long as any idle watchers are active, the process will not block when waiting for new events.

CLASS SYNOPSIS
       EvIdle

       EvIdleextends
       EvWatcher

       Inherited properties

       o public$is_active

       o public$data

       o public$is_pending

       o public$priority

       Methods

       o public EvIdle::__construct (callable  $callback, [mixed  $data], [int	$priority])

       o finalpublicstatic object EvIdle::createStopped (string  $callback, [mixed  $data], [int  $priority])

       Inherited methods

       o public int EvWatcher::clear (void  )

       o abstractpublic EvWatcher::__construct (void  )

       o public void EvWatcher::feed (int  $revents)

       o public EvLoop EvWatcher::getLoop (void  )

       o public void EvWatcher::invoke (int  $revents)

       o public bool EvWatcher::keepalive ([bool  $value])

       o public void EvWatcher::setCallback (callable  $callback)

       o public void EvWatcher::start (void  )

       o public void EvWatcher::stop (void  )

PHP Documentation Group 														 EVIDLE(3)