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/*

 *  Thread Handler

 *

 *

 *  COPYRIGHT (c) 1989-1999.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  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: threadcreateidle.c,v 1.2 2001-09-27 11:59:34 chris Exp $

 */

#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,

  );

}