event::generic(3pm) [debian man page]

Event::generic(3pm)					User Contributed Perl Documentation				       Event::generic(3pm)

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 v5.14.2							    2007-05-22						       Event::generic(3pm)

dat_evd_post_se(3DAT)				     Direct Access Transport Library Functions				     dat_evd_post_se(3DAT)

NAME

       dat_evd_post_se - post Software event to the Event Dispatcher event queue

SYNOPSIS

       cc [ flag... ] file... -ldat [ library... ]
       #include <dat/udat.h>

       DAT_RETURN
	   dat_evd_post_se(
	   IN	     DAT_EVD_HANDLE    evd_handle,
	   IN const  DAT_EVENT	       *event
	   )

PARAMETERS

       evd_handle    Handle for an instance of the Event Dispatcher

       event	     A pointer to a Consumer created Software Event.

DESCRIPTION

       The  dat_evd_post_se()  function posts Software events to the Event Dispatcher event queue. This is analogous to event arrival on the Event
       Dispatcher software Event Stream. The event that the Consumer provides adheres to the event format as defined in <dat.h>. The first element
       in  the	event provides the type of the event (DAT_EVENT_TYPE_SOFTWARE); the rest provide the event-type-specific parameters. These parame-
       ters are opaque to a Provider. Allocation and release of the memory referenced by the event pointer in a software event are the	Consumer's
       responsibility.

       There  is no ordering between events from different Event Streams. All the synchronization issues between multiple Consumer contexts trying
       to post events to an Event Dispatcher instance simultaneously are left to a Consumer.

       If the event queue is full, the operation is completed unsuccessfully and returns DAT_QUEUE_FULL. The event is not queued. The queue  over-
       flow condition does takes place and, therefore, the asynchronous Event Dispatcher is not effected.

RETURN VALUES

       DAT_SUCCESS		The operation was successful.

       DAT_INVALID_HANDLE	The evd_handle parameter is invalid.

       DAT_INVALID_PARAMETER	The event parameter is invalid.

       DAT_QUEUE_FULL		The Event Dispatcher queue is full.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard: uDAPL, 1.1, 1.2    |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       libdat(3LIB), attributes(5)

SunOS 5.11							    16 Jul 2004 					     dat_evd_post_se(3DAT)