evtimer(3) [php man page]

EVTIMER(3)								 1								EVTIMER(3)

The EvTimer class

INTRODUCTION

       EvTimer	watchers are simple relative timers that generate an event after a given time, and optionally repeating in regular intervals after
       that.

	The timers are based on real time, that is, if one registers an event that times out after an hour and resets the system clock to  January
       last  year  ,  it  will	still  time out after(roughly) one hour. "Roughly" because detecting time jumps is hard, and some inaccuracies are
       unavoidable.

	The callback is guaranteed to be invoked only after its timeout has passed (not at, so on systems with	very  low-resolution  clocks  this
       might  introduce  a small delay). If multiple timers become ready during the same loop iteration then the ones with earlier time-out values
       are invoked before ones of the same priority with later time-out values (but this is no longer  true  when  a  callback	calls  EvLoop::run
       recursively).

	The timer itself will do a best-effort at avoiding drift, that is, if a timer is configured to trigger every 10 seconds, then it will nor-
       mally trigger at exactly 10 second intervals. If, however, the script cannot keep up with the timer because it takes longer than  those	10
       seconds to do) the timer will not fire more than once per event loop iteration.

CLASS SYNOPSIS

       EvTimer

       EvTimerextends
       EvWatcher

       Properties

       o public$repeat

       o public$remaining

       Inherited properties

       o public$is_active

       o public$data

       o public$is_pending

       o public$priority

       Methods

       o public void EvTimer::again (void  )

       o public EvTimer::__construct NULL (double  $after, double  $repeat, callable  $callback, [mixed  $data], [int  $priority])

       o finalpublicstatic  EvTimer EvTimer::createStopped NULL (double  $after, double  $repeat, callable  $callback, [mixed  $data], [int  $pri-
	 ority])

       o public void EvTimer::set (double  $after, double  $repeat)

       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  )

PROPERTIES

	      o $repeat
		- If repeat is 0.0 , then it will automatically be stopped once the timeout is reached. If it is positive,  then  the  timer  will
		automatically be configured to trigger again every repeat seconds later, until stopped manually.

	      o $remaining
		-  Returns  the  remaining  time until a timer fires. If the timer is active, then this time is relative to the current event loop
		time, otherwise it's the timeout value currently configured.  That is, after instanciating an EvTimer with an $after value of  5.0
		and  $repeat value of 7.0 , $remaining returns 5.0 . When the timer is started and one second passes, $remaining will return 4.0 .
		When the timer expires and is restarted, it will return roughly 7.0 (likely slightly less as callback invocation takes	some  time
		too), and so on.

PHP Documentation Group 														EVTIMER(3)

Check Out this Related Man Page

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)

Linux and UNIX Man Pages

evtimer(3) [php man page]

Check Out this Related Man Page