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4377 svoboda 1
/*
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 * Copyright (c) 2009 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup generic
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 * @{
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 */
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/** @file
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 */
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#ifndef KERN_EVENT_H_
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#define KERN_EVENT_H_
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#include <ipc/event_types.h>
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#include <arch/types.h>
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#include <synch/spinlock.h>
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#include <ipc/ipc.h>
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/** Event notification structure. */
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typedef struct {
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    SPINLOCK_DECLARE(lock);
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    /** Answerbox for notifications. */
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    answerbox_t *answerbox;
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    /** Method to be used for the notification. */
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    unative_t method;
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    /** Counter. */
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    size_t counter;
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} event_t;
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extern void event_init(void);
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extern unative_t sys_event_subscribe(unative_t, unative_t);
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extern bool event_is_subscribed(event_type_t);
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extern void event_cleanup_answerbox(answerbox_t *);
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#define event_notify_0(e) \
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    event_notify((e), 0, 0, 0, 0, 0)
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#define event_notify_1(e, a1) \
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    event_notify((e), (a1), 0, 0, 0, 0)
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#define event_notify_2(e, a1, a2) \
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    event_notify((e), (a1), (a2), 0, 0, 0)
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#define event_notify_3(e, a1, a2, a3) \
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    event_notify((e), (a1), (a2), (a3), 0, 0)
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#define event_notify_4(e, a1, a2, a3, a4) \
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    event_notify((e), (a1), (a2), (a3), (a4), 0)
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#define event_notify_5(e, a1, a2, a3, a4, a5) \
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    event_notify((e), (a1), (a2), (a3), (a4), (a5))
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extern void event_notify(event_type_t, unative_t, unative_t, unative_t,
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    unative_t, unative_t);
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#endif
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/** @}
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 */