-/**
- * \file
- * <!--
- * This file is part of BeRTOS.
- *
- * Bertos is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * As a special exception, you may use this file as part of a free software
- * library without restriction. Specifically, if other files instantiate
- * templates or use macros or inline functions from this file, or you compile
- * this file and link it with other files to produce an executable, this
- * file does not by itself cause the resulting executable to be covered by
- * the GNU General Public License. This exception does not however
- * invalidate any other reasons why the executable file might be covered by
- * the GNU General Public License.
- *
- * Copyright 2006 Develer S.r.l. (http://www.develer.com/)
- *
- * -->
- *
- * \brief Simple notifier for the observer/subject pattern (implementation)
- *
- * \version $Id$
- * \author Bernardo Innocenti <bernie@develer.com>
- */
-
-#include "observer.h"
-#include <cfg/cpu.h> // IRQ_DISABLE/IRQ_ENABLE
-
-
-void observer_SetEvent(Observer *observer, void (*event)(int event_id, void *param))
-{
- observer->event = event;
-}
-
-void observer_InitSubject(Subject *subject)
-{
- LIST_INIT(&subject->observers);
-}
-
-void observer_Subscribe(Subject *subject, Observer *observer)
-{
- ATOMIC(ADDHEAD(&subject->observers, &observer->link));
-}
-
-void observer_Unsubscribe(UNUSED_ARG(Subject *,subject), Observer *observer)
-{
- ATOMIC(REMOVE(&observer->link));
-}
-
-void observer_notify(Subject *subject, int event_id, void *param)
-{
- Observer *observer;
- cpuflags_t irqstate;
- IRQ_SAVE_DISABLE(irqstate);
-
- /*
- * Run over list with protection against other
- * threads, but re-enable irqs in callbacks.
- */
- FOREACH_NODE(observer, &subject->observers)
- {
- IRQ_RESTORE(irqstate);
- observer->event(event_id, param);
- IRQ_SAVE_DISABLE(irqstate);
- }
-
- IRQ_RESTORE(irqstate);
-}