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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/rbtreeimpl.h>
#include <rtems/score/threadimpl.h>
RBTree_Compare_result _Thread_queue_Compare_priority(
const RBTree_Node *left,
const RBTree_Node *right
)
{
const Thread_Control *left_thread;
const Thread_Control *right_thread;
Priority_Control left_prio;
Priority_Control right_prio;
left_thread = THREAD_RBTREE_NODE_TO_THREAD( left );
right_thread = THREAD_RBTREE_NODE_TO_THREAD( right );
left_prio = left_thread->current_priority;
right_prio = right_thread->current_priority;
/*
* SuperCore priorities use lower numbers to indicate greater importance.
*/
return ( left_prio > right_prio ) - ( left_prio < right_prio );
}
void _Thread_queue_Initialize(
Thread_queue_Control *the_thread_queue,
Thread_queue_Disciplines the_discipline,
uint32_t timeout_status
)
{
const Thread_queue_Operations *operations;
the_thread_queue->timeout_status = timeout_status;
_ISR_lock_Initialize( &the_thread_queue->Lock, "Thread Queue" );
if ( the_discipline == THREAD_QUEUE_DISCIPLINE_PRIORITY ) {
operations = &_Thread_queue_Operations_priority;
} else {
_Assert( the_discipline == THREAD_QUEUE_DISCIPLINE_FIFO );
operations = &_Thread_queue_Operations_FIFO;
}
the_thread_queue->operations = operations;
( *operations->initialize )( the_thread_queue );
}
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