/**
* @file
*
* @ingroup ScoreSchedulerStrongAPA
*
* @brief Strong APA Scheduler Implementation
*/
/*
* Copyright (c) 2013, 2016 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/schedulerstrongapa.h>
#include <rtems/score/schedulerpriorityimpl.h>
#include <rtems/score/schedulersmpimpl.h>
static Scheduler_strong_APA_Context *_Scheduler_strong_APA_Get_self(
Scheduler_Context *context
)
{
return (Scheduler_strong_APA_Context *) context;
}
static Scheduler_strong_APA_Node *
_Scheduler_strong_APA_Node_downcast( Scheduler_Node *node )
{
return (Scheduler_strong_APA_Node *) node;
}
static void _Scheduler_strong_APA_Move_from_scheduled_to_ready(
Scheduler_Context *context,
Scheduler_Node *scheduled_to_ready
)
{
Scheduler_strong_APA_Context *self =
_Scheduler_strong_APA_Get_self( context );
Scheduler_strong_APA_Node *node =
_Scheduler_strong_APA_Node_downcast( scheduled_to_ready );
_Chain_Extract_unprotected( &node->Base.Base.Node.Chain );
_Scheduler_priority_Ready_queue_enqueue_first(
&node->Base.Base.Node.Chain,
&node->Ready_queue,
&self->Bit_map
);
}
static void _Scheduler_strong_APA_Move_from_ready_to_scheduled(
Scheduler_Context *context,
Scheduler_Node *ready_to_scheduled
)
{
Scheduler_strong_APA_Context *self;
Scheduler_strong_APA_Node *node;
Priority_Control insert_priority;
self = _Scheduler_strong_APA_Get_self( context );
node = _Scheduler_strong_APA_Node_downcast( ready_to_scheduled );
_Scheduler_priority_Ready_queue_extract(
&node->Base.Base.Node.Chain,
&node->Ready_queue,
&self->Bit_map
);
insert_priority = _Scheduler_SMP_Node_priority( &node->Base.Base );
insert_priority = SCHEDULER_PRIORITY_APPEND( insert_priority );
_Chain_Insert_ordered_unprotected(
&self->Base.Scheduled,
&node->Base.Base.Node.Chain,
&insert_priority,
_Scheduler_SMP_Priority_less_equal
);
}
static void _Scheduler_strong_APA_Insert_ready(
Scheduler_Context *context,
Scheduler_Node *node_base,
Priority_Control insert_priority
)
{
Scheduler_strong_APA_Context *self;
Scheduler_strong_APA_Node *node;
self = _Scheduler_strong_APA_Get_self( context );
node = _Scheduler_strong_APA_Node_downcast( node_base );
if ( SCHEDULER_PRIORITY_IS_APPEND( insert_priority ) ) {
_Scheduler_priority_Ready_queue_enqueue(
&node->Base.Base.Node.Chain,
&node->Ready_queue,
&self->Bit_map
);
} else {
_Scheduler_priority_Ready_queue_enqueue_first(
&node->Base.Base.Node.Chain,
&node->Ready_queue,
&self->Bit_map
);
}
}
static void _Scheduler_strong_APA_Extract_from_ready(
Scheduler_Context *context,
Scheduler_Node *the_thread
)
{
Scheduler_strong_APA_Context *self =
_Scheduler_strong_APA_Get_self( context );
Scheduler_strong_APA_Node *node =
_Scheduler_strong_APA_Node_downcast( the_thread );
_Scheduler_priority_Ready_queue_extract(
&node->Base.Base.Node.Chain,
&node->Ready_queue,
&self->Bit_map
);
}
static void _Scheduler_strong_APA_Do_update(
Scheduler_Context *context,
Scheduler_Node *node_to_update,
Priority_Control new_priority
)
{
Scheduler_strong_APA_Context *self =
_Scheduler_strong_APA_Get_self( context );
Scheduler_strong_APA_Node *node =
_Scheduler_strong_APA_Node_downcast( node_to_update );
_Scheduler_SMP_Node_update_priority( &node->Base, new_priority );
_Scheduler_priority_Ready_queue_update(
&node->Ready_queue,
SCHEDULER_PRIORITY_UNMAP( new_priority ),
&self->Bit_map,
&self->Ready[ 0 ]
);
}
static Scheduler_strong_APA_Context *
_Scheduler_strong_APA_Get_context( const Scheduler_Control *scheduler )
{
return (Scheduler_strong_APA_Context *) _Scheduler_Get_context( scheduler );
}
void _Scheduler_strong_APA_Initialize( const Scheduler_Control *scheduler )
{
Scheduler_strong_APA_Context *self =
_Scheduler_strong_APA_Get_context( scheduler );
_Scheduler_SMP_Initialize( &self->Base );
_Priority_bit_map_Initialize( &self->Bit_map );
_Scheduler_priority_Ready_queue_initialize(
&self->Ready[ 0 ],
scheduler->maximum_priority
);
}
void _Scheduler_strong_APA_Node_initialize(
const Scheduler_Control *scheduler,
Scheduler_Node *node,
Thread_Control *the_thread,
Priority_Control priority
)
{
Scheduler_Context *context;
Scheduler_strong_APA_Context *self;
Scheduler_strong_APA_Node *the_node;
the_node = _Scheduler_strong_APA_Node_downcast( node );
_Scheduler_SMP_Node_initialize(
scheduler,
&the_node->Base,
the_thread,
priority
);
context = _Scheduler_Get_context( scheduler );
self = _Scheduler_strong_APA_Get_self( context );
_Scheduler_priority_Ready_queue_update(
&the_node->Ready_queue,
SCHEDULER_PRIORITY_UNMAP( priority ),
&self->Bit_map,
&self->Ready[ 0 ]
);
}
static bool _Scheduler_strong_APA_Has_ready( Scheduler_Context *context )
{
Scheduler_strong_APA_Context *self =
_Scheduler_strong_APA_Get_self( context );
return !_Priority_bit_map_Is_empty( &self->Bit_map );
}
static Scheduler_Node *_Scheduler_strong_APA_Get_highest_ready(
Scheduler_Context *context,
Scheduler_Node *node
)
{
Scheduler_strong_APA_Context *self =
_Scheduler_strong_APA_Get_self( context );
(void) node;
return (Scheduler_Node *) _Scheduler_priority_Ready_queue_first(
&self->Bit_map,
&self->Ready[ 0 ]
);
}
void _Scheduler_strong_APA_Block(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
)
{
Scheduler_Context *context = _Scheduler_Get_context( scheduler );
_Scheduler_SMP_Block(
context,
the_thread,
node,
_Scheduler_strong_APA_Extract_from_ready,
_Scheduler_strong_APA_Get_highest_ready,
_Scheduler_strong_APA_Move_from_ready_to_scheduled,
_Scheduler_SMP_Allocate_processor_exact
);
}
static bool _Scheduler_strong_APA_Enqueue(
Scheduler_Context *context,
Scheduler_Node *node,
Priority_Control insert_priority
)
{
return _Scheduler_SMP_Enqueue(
context,
node,
insert_priority,
_Scheduler_SMP_Priority_less_equal,
_Scheduler_strong_APA_Insert_ready,
_Scheduler_SMP_Insert_scheduled,
_Scheduler_strong_APA_Move_from_scheduled_to_ready,
_Scheduler_SMP_Get_lowest_scheduled,
_Scheduler_SMP_Allocate_processor_exact
);
}
static bool _Scheduler_strong_APA_Enqueue_scheduled(
Scheduler_Context *context,
Scheduler_Node *node,
Priority_Control insert_priority
)
{
return _Scheduler_SMP_Enqueue_scheduled(
context,
node,
insert_priority,
_Scheduler_SMP_Priority_less_equal,
_Scheduler_strong_APA_Extract_from_ready,
_Scheduler_strong_APA_Get_highest_ready,
_Scheduler_strong_APA_Insert_ready,
_Scheduler_SMP_Insert_scheduled,
_Scheduler_strong_APA_Move_from_ready_to_scheduled,
_Scheduler_SMP_Allocate_processor_exact
);
}
void _Scheduler_strong_APA_Unblock(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
)
{
Scheduler_Context *context = _Scheduler_Get_context( scheduler );
_Scheduler_SMP_Unblock(
context,
the_thread,
node,
_Scheduler_strong_APA_Do_update,
_Scheduler_strong_APA_Enqueue
);
}
static bool _Scheduler_strong_APA_Do_ask_for_help(
Scheduler_Context *context,
Thread_Control *the_thread,
Scheduler_Node *node
)
{
return _Scheduler_SMP_Ask_for_help(
context,
the_thread,
node,
_Scheduler_SMP_Priority_less_equal,
_Scheduler_strong_APA_Insert_ready,
_Scheduler_SMP_Insert_scheduled,
_Scheduler_strong_APA_Move_from_scheduled_to_ready,
_Scheduler_SMP_Get_lowest_scheduled,
_Scheduler_SMP_Allocate_processor_lazy
);
}
void _Scheduler_strong_APA_Update_priority(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
)
{
Scheduler_Context *context = _Scheduler_Get_context( scheduler );
_Scheduler_SMP_Update_priority(
context,
the_thread,
node,
_Scheduler_strong_APA_Extract_from_ready,
_Scheduler_strong_APA_Do_update,
_Scheduler_strong_APA_Enqueue,
_Scheduler_strong_APA_Enqueue_scheduled,
_Scheduler_strong_APA_Do_ask_for_help
);
}
bool _Scheduler_strong_APA_Ask_for_help(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
)
{
Scheduler_Context *context = _Scheduler_Get_context( scheduler );
return _Scheduler_strong_APA_Do_ask_for_help( context, the_thread, node );
}
void _Scheduler_strong_APA_Reconsider_help_request(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
)
{
Scheduler_Context *context = _Scheduler_Get_context( scheduler );
_Scheduler_SMP_Reconsider_help_request(
context,
the_thread,
node,
_Scheduler_strong_APA_Extract_from_ready
);
}
void _Scheduler_strong_APA_Withdraw_node(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node,
Thread_Scheduler_state next_state
)
{
Scheduler_Context *context = _Scheduler_Get_context( scheduler );
_Scheduler_SMP_Withdraw_node(
context,
the_thread,
node,
next_state,
_Scheduler_strong_APA_Extract_from_ready,
_Scheduler_strong_APA_Get_highest_ready,
_Scheduler_strong_APA_Move_from_ready_to_scheduled,
_Scheduler_SMP_Allocate_processor_lazy
);
}
void _Scheduler_strong_APA_Add_processor(
const Scheduler_Control *scheduler,
Thread_Control *idle
)
{
Scheduler_Context *context = _Scheduler_Get_context( scheduler );
_Scheduler_SMP_Add_processor(
context,
idle,
_Scheduler_strong_APA_Has_ready,
_Scheduler_strong_APA_Enqueue_scheduled,
_Scheduler_SMP_Do_nothing_register_idle
);
}
Thread_Control *_Scheduler_strong_APA_Remove_processor(
const Scheduler_Control *scheduler,
Per_CPU_Control *cpu
)
{
Scheduler_Context *context = _Scheduler_Get_context( scheduler );
return _Scheduler_SMP_Remove_processor(
context,
cpu,
_Scheduler_strong_APA_Extract_from_ready,
_Scheduler_strong_APA_Enqueue
);
}
void _Scheduler_strong_APA_Yield(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
)
{
Scheduler_Context *context = _Scheduler_Get_context( scheduler );
_Scheduler_SMP_Yield(
context,
the_thread,
node,
_Scheduler_strong_APA_Extract_from_ready,
_Scheduler_strong_APA_Enqueue,
_Scheduler_strong_APA_Enqueue_scheduled
);
}