source: rtems/c/src/exec/score/src/objectinitializeinformation.c @ 9b05600

4.104.114.84.95
Last change on this file since 9b05600 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on 11/17/99 at 17:51:34

Updated copyright notice.

  • Property mode set to 100644
File size: 4.2 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.OARcorp.com/rtems/license.html.
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 *    the_class           - object class
36 *    supports_global     - TRUE if this is a global object class
37 *    maximum             - maximum objects of this class
38 *    size                - size of this object's control block
39 *    is_string           - TRUE if names for this object are strings
40 *    maximum_name_length - maximum length of each object's name
41 *    is_thread           - TRUE if this class is threads
42 *
43 *  Output parameters:  NONE
44 */
45
46void _Objects_Initialize_information(
47  Objects_Information *information,
48  Objects_Classes      the_class,
49  boolean              supports_global,
50  unsigned32           maximum,
51  unsigned32           size,
52  boolean              is_string,
53  unsigned32           maximum_name_length,
54  boolean              is_thread
55)
56{
57  static Objects_Control *null_local_table = NULL;
58 
59  unsigned32       minimum_index;
60  unsigned32       index;
61  unsigned32       name_length;
62
63  information->the_class          = the_class;
64  information->is_string          = is_string;
65  information->is_thread          = is_thread;
66 
67  information->local_table        = 0;
68  information->name_table         = 0;
69  information->inactive_per_block = 0;
70  information->object_blocks      = 0;
71 
72  information->inactive           = 0;
73 
74  /*
75   *  Set the entry in the object information table.
76   */
77
78  _Objects_Information_table[ the_class ] = information;
79
80  /*
81   *  Set the size of the object
82   */
83
84  information->size = size;
85 
86  /*
87   *  Are we operating in unlimited, or auto-extend mode
88   */
89
90  information->auto_extend = (maximum & OBJECTS_UNLIMITED_OBJECTS) ? TRUE : FALSE;
91  maximum                 &= ~OBJECTS_UNLIMITED_OBJECTS;
92 
93  /*
94   *  The allocation unit is the maximum value
95   */
96
97  information->allocation_size = maximum;
98
99  /*
100   *  Provide a null local table entry for the case of any empty table.
101   */
102
103  information->local_table = &null_local_table;
104
105  /*
106   *  Calculate minimum and maximum Id's
107   */
108
109  if ( maximum == 0 ) minimum_index = 0;
110  else                minimum_index = 1;
111
112  information->minimum_id =
113    _Objects_Build_id( the_class, _Objects_Local_node, minimum_index );
114
115  /*
116   *  Calculate the maximum name length
117   */
118
119  name_length = maximum_name_length;
120
121  if ( name_length & (OBJECTS_NAME_ALIGNMENT-1) )
122    name_length = (name_length + OBJECTS_NAME_ALIGNMENT) &
123                  ~(OBJECTS_NAME_ALIGNMENT-1);
124
125  information->name_length = name_length;
126
127  _Chain_Initialize_empty( &information->Inactive );
128   
129  /*
130   *  Initialize objects .. if there are any
131   */
132
133  if ( maximum ) {
134
135    /*
136     *  Reset the maximum value. It will be updated when the information is
137     *  extended.
138     */
139   
140    information->maximum = 0;
141   
142    /*
143     *  Always have the maximum size available so the current performance
144     *  figures are create are met.  If the user moves past the maximum
145     *  number then a performance hit is taken.
146     */
147   
148    _Objects_Extend_information( information );
149   
150  }
151
152  /*
153   *  Take care of multiprocessing
154   */
155
156  if ( supports_global == TRUE && _System_state_Is_multiprocessing ) {
157
158    information->global_table =
159      (Chain_Control *) _Workspace_Allocate_or_fatal_error(
160        (_Objects_Maximum_nodes + 1) * sizeof(Chain_Control)
161      );
162
163    for ( index=1; index <= _Objects_Maximum_nodes ; index++ )
164      _Chain_Initialize_empty( &information->global_table[ index ] );
165   }
166   else
167     information->global_table = NULL;
168}
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