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/*
* Copyright (c) 2015 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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/threadimpl.h>
#include <rtems/score/chainimpl.h>
#include <rtems/score/rbtreeimpl.h>
static void _Thread_queue_Do_nothing_priority_change(
Thread_Control *the_thread,
Priority_Control new_priority,
Thread_queue_Control *the_thread_queue
)
{
/* Do nothing */
}
static void _Thread_queue_Do_nothing_extract(
Thread_queue_Control *the_thread_queue,
Thread_Control *the_thread
)
{
/* Do nothing */
}
static void _Thread_queue_FIFO_initialize(
Thread_queue_Control *the_thread_queue
)
{
_Chain_Initialize_empty( &the_thread_queue->Queues.Fifo );
}
static void _Thread_queue_FIFO_enqueue(
Thread_queue_Control *the_thread_queue,
Thread_Control *the_thread
)
{
_Chain_Append_unprotected(
&the_thread_queue->Queues.Fifo,
&the_thread->Wait.Node.Chain
);
}
static void _Thread_queue_FIFO_extract(
Thread_queue_Control *the_thread_queue,
Thread_Control *the_thread
)
{
_Chain_Extract_unprotected( &the_thread->Wait.Node.Chain );
}
static Thread_Control *_Thread_queue_FIFO_first(
Thread_queue_Control *the_thread_queue
)
{
Chain_Control *fifo = &the_thread_queue->Queues.Fifo;
return _Chain_Is_empty( fifo ) ?
NULL : THREAD_CHAIN_NODE_TO_THREAD( _Chain_First( fifo ) );
}
static void _Thread_queue_Priority_priority_change(
Thread_Control *the_thread,
Priority_Control new_priority,
Thread_queue_Control *the_thread_queue
)
{
_RBTree_Extract(
&the_thread_queue->Queues.Priority,
&the_thread->Wait.Node.RBTree
);
_RBTree_Insert(
&the_thread_queue->Queues.Priority,
&the_thread->Wait.Node.RBTree,
_Thread_queue_Compare_priority,
false
);
}
static void _Thread_queue_Priority_initialize(
Thread_queue_Control *the_thread_queue
)
{
_RBTree_Initialize_empty( &the_thread_queue->Queues.Priority );
}
static void _Thread_queue_Priority_enqueue(
Thread_queue_Control *the_thread_queue,
Thread_Control *the_thread
)
{
_RBTree_Insert(
&the_thread_queue->Queues.Priority,
&the_thread->Wait.Node.RBTree,
_Thread_queue_Compare_priority,
false
);
}
static void _Thread_queue_Priority_extract(
Thread_queue_Control *the_thread_queue,
Thread_Control *the_thread
)
{
_RBTree_Extract(
&the_thread_queue->Queues.Priority,
&the_thread->Wait.Node.RBTree
);
}
static Thread_Control *_Thread_queue_Priority_first(
Thread_queue_Control *the_thread_queue
)
{
RBTree_Node *first;
first = _RBTree_First( &the_thread_queue->Queues.Priority, RBT_LEFT );
return first != NULL ? THREAD_RBTREE_NODE_TO_THREAD( first ) : NULL;
}
const Thread_queue_Operations _Thread_queue_Operations_default = {
.priority_change = _Thread_queue_Do_nothing_priority_change,
.extract = _Thread_queue_Do_nothing_extract
/*
* The default operations are only used in _Thread_Change_priority() and
* _Thread_Timeout() and don't have a thread queue associated with them, so
* the enqueue and first operations are superfluous.
*/
};
const Thread_queue_Operations _Thread_queue_Operations_FIFO = {
.priority_change = _Thread_queue_Do_nothing_priority_change,
.initialize = _Thread_queue_FIFO_initialize,
.enqueue = _Thread_queue_FIFO_enqueue,
.extract = _Thread_queue_FIFO_extract,
.first = _Thread_queue_FIFO_first
};
const Thread_queue_Operations _Thread_queue_Operations_priority = {
.priority_change = _Thread_queue_Priority_priority_change,
.initialize = _Thread_queue_Priority_initialize,
.enqueue = _Thread_queue_Priority_enqueue,
.extract = _Thread_queue_Priority_extract,
.first = _Thread_queue_Priority_first
};
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