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/**
* @file
*
* @brief Thread Queue Initialize
* @ingroup ScoreThreadQ
*/
/*
* COPYRIGHT (c) 1989-2014.
* 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.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/threadqimpl.h>
#include <rtems/score/chainimpl.h>
#include <rtems/score/rbtreeimpl.h>
#include <rtems/score/scheduler.h>
#include <rtems/score/threadimpl.h>
int _Thread_queue_Compare_priority(
const RBTree_Node *left,
const RBTree_Node *right
)
{
Priority_Control left_priority =
THREAD_RBTREE_NODE_TO_THREAD( left )->current_priority;
Priority_Control right_priority =
THREAD_RBTREE_NODE_TO_THREAD( right )->current_priority;
/*
* SuperCore priorities use lower numbers to indicate greater importance.
*/
if ( left_priority == right_priority )
return 0;
if ( left_priority < right_priority )
return -1;
return 1;
}
void _Thread_queue_Initialize(
Thread_queue_Control *the_thread_queue,
Thread_queue_Disciplines the_discipline,
States_Control state,
uint32_t timeout_status
)
{
if ( _Scheduler_FIXME_thread_priority_queues_are_broken ) {
the_discipline = THREAD_QUEUE_DISCIPLINE_FIFO;
}
the_thread_queue->state = state;
the_thread_queue->discipline = the_discipline;
the_thread_queue->timeout_status = timeout_status;
the_thread_queue->sync_state = THREAD_BLOCKING_OPERATION_SYNCHRONIZED;
if ( the_discipline == THREAD_QUEUE_DISCIPLINE_PRIORITY ) {
_RBTree_Initialize_empty( &the_thread_queue->Queues.Priority );
} else { /* must be THREAD_QUEUE_DISCIPLINE_FIFO */
_Chain_Initialize_empty( &the_thread_queue->Queues.Fifo );
}
}
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