X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=dt%2Fdnotifier.h;h=4b4ef1bf7e8c933ddce5dd11d708edeed4cd3eca;hb=HEAD;hp=a7523cbc68c23a17ea4466ff0ecfda705b03ffef;hpb=5f3952176a4e9a00ca8dd5ec4a6b994958f89e0a;p=bertos.git

diff --git a/dt/dnotifier.h b/dt/dnotifier.h
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-/**
- * \file
- * <!--
- * Copyright 2005 Develer S.r.l. (http://www.develer.com/)
- * -->
- *
- * \version $Id$
- *
- * \brief Notifier obj (interface).
- *
- * \version $Id$
- * \author Bernardo Innocenti <bernie@develer.com>
- * \author Francesco Sacchi <batt@develer.com>
- */
-
-/*#*
- *#* $Log$
- *#* Revision 1.2  2006/07/19 12:56:26  bernie
- *#* Convert to new Doxygen style.
- *#*
- *#* Revision 1.1  2005/11/04 18:26:38  bernie
- *#* Import into DevLib.
- *#*
- *#* Revision 1.4  2005/06/09 13:23:58  batt
- *#* Add some comments.
- *#*
- *#* Revision 1.3  2005/06/08 17:32:33  batt
- *#* Switch to new messaging system.
- *#*
- *#* Revision 1.2  2005/06/06 11:04:12  batt
- *#* Add some comments.
- *#*
- *#* Revision 1.1  2005/05/26 08:32:53  batt
- *#* Add new Develer widget system :)
- *#*
- *#*/
-#ifndef DT_DNOTIFIER_H
-#define DT_DNOTIFIER_H
-
-#include <cfg/debug.h>
-#include <dt/dtag.h>
-#include <mware/list.h>
-
-//Fwd declaretion.
-struct DNotifier;
-struct DFilter;
-
-typedef void (* update_func_ptr)(struct DNotifier *, dtag_t, dval_t);
-typedef void (* update_filter_ptr)(struct DFilter *, dtag_t, dval_t);
-
-/**
- * Base object for receive and forward messages.
- * It contains an update function used to update itslef and a list to
- * notify other DNotifer eventually connected.
- */
-typedef struct DNotifier
-{
-	/// Receive new attributes from other notifiers.
-	update_func_ptr update;
-
-	/// List of target notifiers to set new attributes to.
-	List targets;
-} DNotifier;
-
-/**
- * Map for messages.
- * Used to translate src message to dst message.
- */
-typedef struct DFilterMap
-{
-	DTagItem src;
-	DTagItem dst;
-} DFilterMap;
-
-
-/**
- * A filter is an interface between two notifier.
- * It can translate messages between them through a map (if it is not null).
- */
-typedef struct DFilter
-{
-	/// Allow creating a list of dfilter objects.
-	Node link;
-
-	/// Target of the filter
-	DNotifier *target;
-
-	/// Update function called by the source dnotifier
-	update_filter_ptr update;
-
-	///Map for translating messages for target
-	const DFilterMap *map;
-
-	///Used in debug to prevent inserting this filter in more than one list
-	DB(uint8_t magic;)
-} DFilter;
-
-/// Type for filter-mask checking
-typedef uint16_t dfilter_mask_t;
-
-/// Filter init
-void filter_init(DFilter *f, const DFilterMap *map, bool masked, DNotifier *source, DNotifier *target);
-
-/// Filter update function without masking capabilities.
-void filter_update(DFilter *f, dtag_t tag, dval_t val);
-
-/// Filter update function with masking capabilities.
-void filter_mask_update(DFilter *f, dtag_t tag, dval_t val);
-
-/// Notifier init
-void notifier_init(DNotifier *n);
-
-
-/**
- * Macro to notify the target object.
- */
-INLINE void dnotify(DNotifier *target, dtag_t tag, dval_t val)
-{
-	if (target)
-		target->update(target, tag, val);
-}
-
-/**
- * Macro to notify all the targets of \a target object.
- */
-INLINE void dnotify_targets(DNotifier *target, dtag_t tag, dval_t val)
-{
-	DFilter *f;
-	if (!ISLISTEMPTY(&target->targets))
-		FOREACHNODE(f, &target->targets)
-			f->update(f, tag, val);
-}
-
-
-/**
- * Macro that connect \a src notifier to \a tgt using \a map and passing \a opt for filtering option.
- * It declares a static filter to achieve connection and messages translation.
- * \note Due its static filter declaration, DCONNECT MUST NOT be used inside loops or in functions called multiple times.
- * Failing to do so will lead to unpredictable connections between notifiers.
- */
-#define DCONNECT(src, tgt, map, opt) \
-	do { \
-		static DFilter _filter_; /* Declare a filter */ \
-		filter_init(&(_filter_), map, opt, src, tgt); /* Init it. */ \
-	} while (0)
-
-
-#endif /* DT_DNOTIFIER_H */