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/*
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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 libc
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 * @{
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 */
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/** @file
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 */
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#ifndef LIBC_FIBRIL_SYNC_H_
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#define LIBC_FIBRIL_SYNC_H_
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#include <async.h>
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#include <fibril.h>
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#include <adt/list.h>
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#include <libarch/tls.h>
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typedef struct {
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    int counter;
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    link_t waiters;
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} fibril_mutex_t;
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#define FIBRIL_MUTEX_INITIALIZE(name) \
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    fibril_mutex_t name = { \
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        .counter = 1, \
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        .waiters = { \
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            .prev = &name.waiters, \
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            .next = &name.waiters, \
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        } \
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    }
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typedef struct {
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    unsigned writers;
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    unsigned readers;
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    link_t waiters;
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} fibril_rwlock_t;
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#define FIBRIL_RWLOCK_INITIALIZE(name) \
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    fibril_rwlock_t name = { \
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        .readers = 0, \
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        .writers = 0, \
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        .waiters = { \
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            .prev = &name.waiters, \
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            .next = &name.waiters, \
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        } \
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    }
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extern void fibril_mutex_initialize(fibril_mutex_t *);
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extern void fibril_mutex_lock(fibril_mutex_t *);
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extern bool fibril_mutex_trylock(fibril_mutex_t *);
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extern void fibril_mutex_unlock(fibril_mutex_t *);
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extern void fibril_rwlock_initialize(fibril_rwlock_t *);
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extern void fibril_rwlock_read_lock(fibril_rwlock_t *);
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extern void fibril_rwlock_write_lock(fibril_rwlock_t *);
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extern void fibril_rwlock_read_unlock(fibril_rwlock_t *);
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extern void fibril_rwlock_write_unlock(fibril_rwlock_t *);
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#endif
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/** @}
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 */