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/*
* Thread Handler
*
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/score/apiext.h>
#include <rtems/score/context.h>
#include <rtems/score/interr.h>
#include <rtems/score/isr.h>
#include <rtems/score/object.h>
#include <rtems/score/priority.h>
#include <rtems/score/states.h>
#include <rtems/score/sysstate.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
#include <rtems/score/userext.h>
#include <rtems/score/wkspace.h>
/*PAGE
*
* _Thread_Create_idle
*/
char *_Thread_Idle_name = "IDLE";
void _Thread_Create_idle( void )
{
void *idle;
unsigned32 idle_task_stack_size;
/*
* The entire workspace is zeroed during its initialization. Thus, all
* fields not explicitly assigned were explicitly zeroed by
* _Workspace_Initialization.
*/
_Thread_Idle = _Thread_Internal_allocate();
/*
* Initialize the IDLE task.
*/
#if (CPU_PROVIDES_IDLE_THREAD_BODY == TRUE)
idle = (void *) _CPU_Thread_Idle_body;
#else
idle = (void *) _Thread_Idle_body;
#endif
if ( _CPU_Table.idle_task )
idle = _CPU_Table.idle_task;
idle_task_stack_size = _CPU_Table.idle_task_stack_size;
if ( idle_task_stack_size < STACK_MINIMUM_SIZE )
idle_task_stack_size = STACK_MINIMUM_SIZE;
_Thread_Initialize(
&_Thread_Internal_information,
_Thread_Idle,
NULL, /* allocate the stack */
idle_task_stack_size,
CPU_IDLE_TASK_IS_FP,
PRIORITY_MAXIMUM,
TRUE, /* preemptable */
THREAD_CPU_BUDGET_ALGORITHM_NONE,
NULL, /* no budget algorithm callout */
0, /* all interrupts enabled */
_Thread_Idle_name
);
/*
* WARNING!!! This is necessary to "kick" start the system and
* MUST be done before _Thread_Start is invoked.
*/
_Thread_Heir =
_Thread_Executing = _Thread_Idle;
_Thread_Start(
_Thread_Idle,
THREAD_START_NUMERIC,
idle,
NULL,
0
);
}
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