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Viewing changes to uspace/lib/libc/include/fibril_sync.h

  • Committer: Martin Decky
  • Date: 2009-08-04 11:19:19 UTC
  • Revision ID: martin@uranus.dsrg.hide.ms.mff.cuni.cz-20090804111919-evyclddlr3v5lhmp
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uspace/lib/libc/include/fibril_sync.h
 
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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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typedef struct {
 
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        link_t waiters;
 
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} fibril_condvar_t;
 
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#define FIBRIL_CONDVAR_INITIALIZE(name) \
 
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        fibril_condvar_t name = { \
 
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                .waiters = { \
 
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                        .next = &name.waiters, \
 
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                        .prev = &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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extern void fibril_condvar_initialize(fibril_condvar_t *);
 
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extern void fibril_condvar_wait(fibril_condvar_t *, fibril_mutex_t *);
 
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extern void fibril_condvar_signal(fibril_condvar_t *);
 
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extern void fibril_condvar_broadcast(fibril_condvar_t *);
 
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#endif
 
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/** @}
 
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 */