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  • 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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kernel/test/synch/rwlock1.c
 
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/*
 
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 * Copyright (c) 2001-2004 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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#include <test.h>
 
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#include <arch.h>
 
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#include <atomic.h>
 
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#include <print.h>
 
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#include <proc/thread.h>
 
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#include <synch/waitq.h>
 
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#include <synch/rwlock.h>
 
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#define READERS  50
 
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#define WRITERS  50
 
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static rwlock_t rwlock;
 
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char *test_rwlock1(void)
 
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{
 
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        rwlock_initialize(&rwlock);
 
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        rwlock_write_lock(&rwlock);
 
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        rwlock_write_unlock(&rwlock);
 
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        rwlock_read_lock(&rwlock);
 
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        rwlock_read_lock(&rwlock);
 
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        rwlock_read_lock(&rwlock);
 
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        rwlock_read_lock(&rwlock);
 
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        rwlock_read_lock(&rwlock);
 
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        rwlock_read_unlock(&rwlock);
 
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        rwlock_read_unlock(&rwlock);
 
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        rwlock_read_unlock(&rwlock);
 
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        rwlock_read_unlock(&rwlock);
 
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        rwlock_read_unlock(&rwlock);
 
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        rwlock_write_lock(&rwlock);
 
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        rwlock_write_unlock(&rwlock);
 
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        rwlock_read_lock(&rwlock);
 
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        rwlock_read_unlock(&rwlock);
 
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        rwlock_write_lock(&rwlock);
 
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        rwlock_write_unlock(&rwlock);
 
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        rwlock_read_lock(&rwlock);
 
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        rwlock_read_unlock(&rwlock);
 
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        return NULL;
 
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}