29 Apr 2021 18:14:31 UTC
- Distribution: Event
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- License: perl_5
- Perl: v5.8.0
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- EVENT SOURCE CLASS
- WATCHER CLASS
- EVENT CLASS
- SEE ALSO
Event::generic - generic event handling
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;
This module provides a watcher type within the
Eventframework. You must understand the architecture of the
Eventsystem 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.
A reified event source.
A watcher that can watch
A (target) event that can carry arbitrary 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
- $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.
- source => $source
The event source to watch. This must be either an
undef. When set to
undef, no source is being watched, and the watcher cannot be started.
Returns the data associated with the event, which may be any scalar. This is read-only, and is set by the event source.