source:
rtems/cpukit/score/src/objectinitializeinformation.c
@
a6eef8b
Last change on this file since a6eef8b was a6eef8b, checked in by Joel Sherrill <joel.sherrill@…>, on 09/04/03 at 18:52:48 | |
---|---|
|
|
File size: 4.4 KB |
Line | |
---|---|
1 | /* |
2 | * Object Handler |
3 | * |
4 | * |
5 | * COPYRIGHT (c) 1989-1999. |
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 | #include <rtems/system.h> |
16 | #include <rtems/score/address.h> |
17 | #include <rtems/score/chain.h> |
18 | #include <rtems/score/object.h> |
19 | #if defined(RTEMS_MULTIPROCESSING) |
20 | #include <rtems/score/objectmp.h> |
21 | #endif |
22 | #include <rtems/score/thread.h> |
23 | #include <rtems/score/wkspace.h> |
24 | #include <rtems/score/sysstate.h> |
25 | #include <rtems/score/isr.h> |
26 | |
27 | /*PAGE |
28 | * |
29 | * _Objects_Initialize_information |
30 | * |
31 | * This routine initializes all object information related data structures. |
32 | * |
33 | * Input parameters: |
34 | * information - object information table |
35 | * maximum - maximum objects of this class |
36 | * size - size of this object's control block |
37 | * is_string - TRUE if names for this object are strings |
38 | * maximum_name_length - maximum length of each object's name |
39 | * When multiprocessing is configured, |
40 | * supports_global - TRUE if this is a global object class |
41 | * extract_callout - pointer to threadq extract callout if MP |
42 | * |
43 | * Output parameters: NONE |
44 | */ |
45 | |
46 | void _Objects_Initialize_information( |
47 | Objects_Information *information, |
48 | Objects_APIs the_api, |
49 | unsigned32 the_class, |
50 | unsigned32 maximum, |
51 | unsigned32 size, |
52 | boolean is_string, |
53 | unsigned32 maximum_name_length |
54 | #if defined(RTEMS_MULTIPROCESSING) |
55 | , |
56 | boolean supports_global, |
57 | Objects_Thread_queue_Extract_callout *extract |
58 | #endif |
59 | ) |
60 | { |
61 | static Objects_Control *null_local_table = NULL; |
62 | unsigned32 minimum_index; |
63 | unsigned32 name_length; |
64 | #if defined(RTEMS_MULTIPROCESSING) |
65 | unsigned32 index; |
66 | #endif |
67 | |
68 | information->the_api = the_api; |
69 | information->the_class = the_class; |
70 | information->is_string = is_string; |
71 | |
72 | information->local_table = 0; |
73 | information->name_table = 0; |
74 | information->inactive_per_block = 0; |
75 | information->object_blocks = 0; |
76 | |
77 | information->inactive = 0; |
78 | |
79 | /* |
80 | * Set the entry in the object information table. |
81 | */ |
82 | |
83 | _Objects_Information_table[ the_api ][ the_class ] = information; |
84 | |
85 | /* |
86 | * Set the size of the object |
87 | */ |
88 | |
89 | information->size = size; |
90 | |
91 | /* |
92 | * Are we operating in unlimited, or auto-extend mode |
93 | */ |
94 | |
95 | information->auto_extend = (maximum & OBJECTS_UNLIMITED_OBJECTS) ? TRUE : FALSE; |
96 | maximum &= ~OBJECTS_UNLIMITED_OBJECTS; |
97 | |
98 | /* |
99 | * The allocation unit is the maximum value |
100 | */ |
101 | |
102 | information->allocation_size = maximum; |
103 | |
104 | /* |
105 | * Provide a null local table entry for the case of any empty table. |
106 | */ |
107 | |
108 | information->local_table = &null_local_table; |
109 | |
110 | /* |
111 | * Calculate minimum and maximum Id's |
112 | */ |
113 | |
114 | if ( maximum == 0 ) minimum_index = 0; |
115 | else minimum_index = 1; |
116 | |
117 | information->minimum_id = |
118 | _Objects_Build_id( the_api, the_class, _Objects_Local_node, minimum_index ); |
119 | |
120 | /* |
121 | * Calculate the maximum name length |
122 | */ |
123 | |
124 | name_length = maximum_name_length; |
125 | |
126 | if ( name_length & (OBJECTS_NAME_ALIGNMENT-1) ) |
127 | name_length = (name_length + OBJECTS_NAME_ALIGNMENT) & |
128 | ~(OBJECTS_NAME_ALIGNMENT-1); |
129 | |
130 | information->name_length = name_length; |
131 | |
132 | _Chain_Initialize_empty( &information->Inactive ); |
133 | |
134 | /* |
135 | * Initialize objects .. if there are any |
136 | */ |
137 | |
138 | if ( maximum ) { |
139 | |
140 | /* |
141 | * Reset the maximum value. It will be updated when the information is |
142 | * extended. |
143 | */ |
144 | |
145 | information->maximum = 0; |
146 | |
147 | /* |
148 | * Always have the maximum size available so the current performance |
149 | * figures are create are met. If the user moves past the maximum |
150 | * number then a performance hit is taken. |
151 | */ |
152 | |
153 | _Objects_Extend_information( information ); |
154 | |
155 | } |
156 | |
157 | /* |
158 | * Take care of multiprocessing |
159 | */ |
160 | |
161 | #if defined(RTEMS_MULTIPROCESSING) |
162 | information->extract = extract; |
163 | |
164 | if ( supports_global == TRUE && _System_state_Is_multiprocessing ) { |
165 | |
166 | information->global_table = |
167 | (Chain_Control *) _Workspace_Allocate_or_fatal_error( |
168 | (_Objects_Maximum_nodes + 1) * sizeof(Chain_Control) |
169 | ); |
170 | |
171 | for ( index=1; index <= _Objects_Maximum_nodes ; index++ ) |
172 | _Chain_Initialize_empty( &information->global_table[ index ] ); |
173 | } |
174 | else |
175 | information->global_table = NULL; |
176 | #endif |
177 | } |
Note: See TracBrowser
for help on using the repository browser.