NAME

       Event::generic - generic event handling

SYNOPSIS

        use Event::generic;

        $source = Event::generic::Source->new;

        $w = Event->generic(source => $source, ...);
        $w = $source->watch(...);

        $source = $w->source;
        $w->source($source);

        $source->event;
        $source->event($data);

        $data = $event->data;

DESCRIPTION

       This module provides a watcher type within the "Event" framework.  You must understand the architecture
       of the "Event" system in order to understand this document.

       This module provides a system of reified event sources and watchers watching those sources.  Events are
       generated solely by a method on the event source object.  The events may carry arbitrary data to the
       event handler callbacks.  This module is intended for situations where the events of interest are best
       determined by Perl code.

CLASSES

       Event::generic::Source
           A reified event source.

       Event::generic
           A watcher that can watch "Event::generic::Source" event sources.

       Event::Event::Dataful
           A (target) event that can carry arbitrary data.

EVENT SOURCE CLASS

   Constructor
       Event::generic::Source->new
           Creates and returns a new event source.

   Methods
       $source->event
       $source->event(DATA)
           The  invocation  of this method is a source event for watchers of the event source.  When this method
           is called, each active watcher of the event source generates a target event.  The DATA, if  supplied,
           is copied into the target event objects, from which it can be retrieved using the data() method.

       $source->watch(ATTR => VALUE, ...)
           Generates  and  returns  a  new watcher, configured to watch this event source.  The standard watcher
           attributes may be specified as arguments.  The watcher returned is an ordinary "Event::generic",  and
           may be reconfigured to watch a different event source.

WATCHER CLASS

   Type-specific attributes
       source => $source
           The  event source to watch.  This must be either an "Event::generic::Source" object or "undef".  When
           set to "undef", no source is being watched, and the watcher cannot be started.

EVENT CLASS

   Type-specific methods
       $event->data
           Returns the data associated with the event, which may be any scalar.  This is read-only, and  is  set
           by the event source.

SEE ALSO

       Event

perl v5.40.0                                       2024-10-20                                Event::generic(3pm)