1 | /* |
---|
2 | * Thread Handler |
---|
3 | * |
---|
4 | * |
---|
5 | * COPYRIGHT (c) 1989-2008. |
---|
6 | * On-Line Applications Research Corporation (OAR). |
---|
7 | * |
---|
8 | * The license and distribution terms for this file may be |
---|
9 | * found in the file LICENSE in this distribution or at |
---|
10 | * http://www.rtems.com/license/LICENSE. |
---|
11 | * |
---|
12 | * $Id$ |
---|
13 | */ |
---|
14 | |
---|
15 | #if HAVE_CONFIG_H |
---|
16 | #include "config.h" |
---|
17 | #endif |
---|
18 | |
---|
19 | #include <rtems/system.h> |
---|
20 | #include <rtems/score/apiext.h> |
---|
21 | #include <rtems/score/context.h> |
---|
22 | #include <rtems/score/interr.h> |
---|
23 | #include <rtems/score/isr.h> |
---|
24 | #include <rtems/score/object.h> |
---|
25 | #include <rtems/score/priority.h> |
---|
26 | #include <rtems/score/states.h> |
---|
27 | #include <rtems/score/sysstate.h> |
---|
28 | #include <rtems/score/thread.h> |
---|
29 | #include <rtems/score/threadq.h> |
---|
30 | #include <rtems/score/userext.h> |
---|
31 | #include <rtems/score/wkspace.h> |
---|
32 | #include <rtems/config.h> |
---|
33 | |
---|
34 | /*PAGE |
---|
35 | * |
---|
36 | * _Thread_Create_idle |
---|
37 | */ |
---|
38 | |
---|
39 | void _Thread_Create_idle( void ) |
---|
40 | { |
---|
41 | Objects_Name name; |
---|
42 | |
---|
43 | name.name_u32 = _Objects_Build_name( 'I', 'D', 'L', 'E' ); |
---|
44 | |
---|
45 | /* |
---|
46 | * The entire workspace is zeroed during its initialization. Thus, all |
---|
47 | * fields not explicitly assigned were explicitly zeroed by |
---|
48 | * _Workspace_Initialization. |
---|
49 | */ |
---|
50 | _Thread_Idle = _Thread_Internal_allocate(); |
---|
51 | |
---|
52 | /* |
---|
53 | * This is only called during initialization and we better be sure |
---|
54 | * that when _Thread_Initialize unnests dispatch that we do not |
---|
55 | * do anything stupid. |
---|
56 | */ |
---|
57 | _Thread_Disable_dispatch(); |
---|
58 | |
---|
59 | _Thread_Initialize( |
---|
60 | &_Thread_Internal_information, |
---|
61 | _Thread_Idle, |
---|
62 | NULL, /* allocate the stack */ |
---|
63 | _Stack_Ensure_minimum( Configuration.idle_task_stack_size ), |
---|
64 | CPU_IDLE_TASK_IS_FP, |
---|
65 | PRIORITY_MAXIMUM, |
---|
66 | true, /* preemptable */ |
---|
67 | THREAD_CPU_BUDGET_ALGORITHM_NONE, |
---|
68 | NULL, /* no budget algorithm callout */ |
---|
69 | 0, /* all interrupts enabled */ |
---|
70 | name |
---|
71 | ); |
---|
72 | |
---|
73 | _Thread_Unnest_dispatch(); |
---|
74 | |
---|
75 | /* |
---|
76 | * WARNING!!! This is necessary to "kick" start the system and |
---|
77 | * MUST be done before _Thread_Start is invoked. |
---|
78 | */ |
---|
79 | _Thread_Heir = |
---|
80 | _Thread_Executing = _Thread_Idle; |
---|
81 | |
---|
82 | _Thread_Start( |
---|
83 | _Thread_Idle, |
---|
84 | THREAD_START_NUMERIC, |
---|
85 | Configuration.idle_task, |
---|
86 | NULL, |
---|
87 | 0 |
---|
88 | ); |
---|
89 | |
---|
90 | } |
---|