source: rtems/cpukit/score/src/threadcreateidle.c @ b568ccb

4.104.114.84.95
Last change on this file since b568ccb was 05df0a8, checked in by Joel Sherrill <joel.sherrill@…>, on 05/17/99 at 20:41:13

Thread Handler split into multiple files. Eventually, as RTEMS is
split into one function per file, this will decrease the size of executables.

  • Property mode set to 100644
File size: 2.2 KB
Line 
1/*
2 *  Thread Handler
3 *
4 *
5 *  COPYRIGHT (c) 1989-1998.
6 *  On-Line Applications Research Corporation (OAR).
7 *  Copyright assigned to U.S. Government, 1994.
8 *
9 *  The license and distribution terms for this file may be
10 *  found in found in the file LICENSE in this distribution or at
11 *  http://www.OARcorp.com/rtems/license.html.
12 *
13 *  $Id$
14 */
15
16#include <rtems/system.h>
17#include <rtems/score/apiext.h>
18#include <rtems/score/context.h>
19#include <rtems/score/interr.h>
20#include <rtems/score/isr.h>
21#include <rtems/score/object.h>
22#include <rtems/score/priority.h>
23#include <rtems/score/states.h>
24#include <rtems/score/sysstate.h>
25#include <rtems/score/thread.h>
26#include <rtems/score/threadq.h>
27#include <rtems/score/userext.h>
28#include <rtems/score/wkspace.h>
29
30/*PAGE
31 *
32 *  _Thread_Create_idle
33 */
34
35char *_Thread_Idle_name = "IDLE";
36
37void _Thread_Create_idle( void )
38{
39  void       *idle;
40  unsigned32  idle_task_stack_size;
41
42  /*
43   *  The entire workspace is zeroed during its initialization.  Thus, all
44   *  fields not explicitly assigned were explicitly zeroed by
45   *  _Workspace_Initialization.
46   */
47 
48  _Thread_Idle = _Thread_Internal_allocate();
49 
50  /*
51   *  Initialize the IDLE task.
52   */
53 
54#if (CPU_PROVIDES_IDLE_THREAD_BODY == TRUE)
55  idle = (void *) _CPU_Thread_Idle_body;
56#else
57  idle = (void *) _Thread_Idle_body;
58#endif
59 
60  if ( _CPU_Table.idle_task )
61    idle = _CPU_Table.idle_task;
62 
63  idle_task_stack_size =  _CPU_Table.idle_task_stack_size;
64  if ( idle_task_stack_size < STACK_MINIMUM_SIZE )
65    idle_task_stack_size = STACK_MINIMUM_SIZE;
66 
67  _Thread_Initialize(
68    &_Thread_Internal_information,
69    _Thread_Idle,
70    NULL,        /* allocate the stack */
71    idle_task_stack_size,
72    CPU_IDLE_TASK_IS_FP,
73    PRIORITY_MAXIMUM,
74    TRUE,        /* preemptable */
75    THREAD_CPU_BUDGET_ALGORITHM_NONE,
76    NULL,        /* no budget algorithm callout */
77    0,           /* all interrupts enabled */
78    _Thread_Idle_name
79  );
80 
81  /*
82   *  WARNING!!! This is necessary to "kick" start the system and
83   *             MUST be done before _Thread_Start is invoked.
84   */
85 
86  _Thread_Heir      =
87  _Thread_Executing = _Thread_Idle;
88 
89  _Thread_Start(
90    _Thread_Idle,
91    THREAD_START_NUMERIC,
92    idle,
93    NULL,
94    0
95  );
96 
97}
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