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/*
* SuperCore RWLock Handler
*
* DESCRIPTION:
*
* This package is part of the implementation of the SuperCore RWLock Handler.
*
* COPYRIGHT (c) 1989-2006.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/system.h>
#include <rtems/score/corerwlock.h>
#include <rtems/score/states.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
/*PAGE
*
* _CORE_RWLock_Initialize
*
* This function initialize a rwlock and sets the initial value based
* on the given count.
*
* Input parameters:
* the_rwlock - the rwlock control block to initialize
* the_rwlock_attributes - the attributes specified at create time
*
* Output parameters: NONE
*/
void _CORE_RWLock_Initialize(
CORE_RWLock_Control *the_rwlock,
CORE_RWLock_Attributes *the_rwlock_attributes
)
{
the_rwlock->Attributes = *the_rwlock_attributes;
/*
the_rwlock->number_of_waiting_threads = 0;
*/
the_rwlock->number_of_readers = 0;
the_rwlock->current_state = CORE_RWLOCK_UNLOCKED;
_Thread_queue_Initialize(
&the_rwlock->Wait_queue,
THREAD_QUEUE_DISCIPLINE_FIFO,
STATES_WAITING_FOR_RWLOCK,
CORE_RWLOCK_TIMEOUT
);
}
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