EVSIGNAL(3)								 1							       EVSIGNAL(3)

The EvSignal class

INTRODUCTION

       EvSignal  watchers  will trigger an event when the process receives a specific signal one or more times. Even though signals are very asyn-
       chronous, libev will try its best to deliver signals synchronously, i.e. as part of the normal event processing, like any other event.

	There is no limit for the number of watchers for the same signal, but only within the same loop, i.e. one can  watch  for  SIGINT  in  the
       default loop and for SIGIO in another loop, but it is not allowed to watch for SIGINT in both the default loop and another loop at the same
       time. At the moment, SIGCHLD is permanently tied to the default loop.

	If possible and supported, libev will install its handlers with SA_RESTART (or equivalent) behaviour enabled, so system calls  should  not
       be  unduly interrupted. In case of a problem with system calls getting interrupted by signals, all the signals can be blocked in an EvCheck
       watcher and unblocked in a EvPrepare watcher.

CLASS SYNOPSIS

       EvSignal

       EvSignalextends
       EvWatcher

       Properties

       o public$signum

       Inherited properties

       o public$is_active

       o public$data

       o public$is_pending

       o public$priority

       Methods

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

       o finalpublicstatic EvSignal EvSignal::createStopped NULL (int  $signum, callable  $callback, [mixed  $data], [int  $priority])

       o public void EvSignal::set (int  $signum)

       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 $signum
		- Signal number. See the constants exported by pcntl extension. See also signal(7) man page.

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