forked from Imagelibrary/rtems
101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
/*
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* Thread Handler
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*
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems/system.h>
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#include <rtems/score/apiext.h>
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#include <rtems/score/context.h>
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#include <rtems/score/interr.h>
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#include <rtems/score/isr.h>
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#include <rtems/score/object.h>
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#include <rtems/score/priority.h>
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#include <rtems/score/states.h>
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#include <rtems/score/sysstate.h>
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#include <rtems/score/thread.h>
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#include <rtems/score/threadq.h>
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#include <rtems/score/userext.h>
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#include <rtems/score/wkspace.h>
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/*PAGE
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*
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* _Thread_Create_idle
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*/
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const char *_Thread_Idle_name = "IDLE";
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void _Thread_Create_idle( void )
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{
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void *idle;
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uint32_t idle_task_stack_size;
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/*
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* The entire workspace is zeroed during its initialization. Thus, all
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* fields not explicitly assigned were explicitly zeroed by
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* _Workspace_Initialization.
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*/
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_Thread_Idle = _Thread_Internal_allocate();
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/*
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* Initialize the IDLE task.
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*/
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#if (CPU_PROVIDES_IDLE_THREAD_BODY == TRUE)
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idle = (void *) _CPU_Thread_Idle_body;
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#else
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idle = (void *) _Thread_Idle_body;
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#endif
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if ( _CPU_Table.idle_task )
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idle = _CPU_Table.idle_task;
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idle_task_stack_size = _CPU_Table.idle_task_stack_size;
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if ( idle_task_stack_size < STACK_MINIMUM_SIZE )
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idle_task_stack_size = STACK_MINIMUM_SIZE;
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_Thread_Initialize(
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&_Thread_Internal_information,
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_Thread_Idle,
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NULL, /* allocate the stack */
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idle_task_stack_size,
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CPU_IDLE_TASK_IS_FP,
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PRIORITY_MAXIMUM,
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TRUE, /* preemptable */
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THREAD_CPU_BUDGET_ALGORITHM_NONE,
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NULL, /* no budget algorithm callout */
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0, /* all interrupts enabled */
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(Objects_Name) _Thread_Idle_name
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);
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/*
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* WARNING!!! This is necessary to "kick" start the system and
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* MUST be done before _Thread_Start is invoked.
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*/
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_Thread_Heir =
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_Thread_Executing = _Thread_Idle;
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_Thread_Start(
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_Thread_Idle,
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THREAD_START_NUMERIC,
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idle,
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NULL,
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0
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);
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}
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