1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/**
* @file
*
* @ingroup ClassicRegionImpl
*
* @brief Classic Region Manager Implementation
*/
/* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#ifndef _RTEMS_RTEMS_REGIONIMPL_H
#define _RTEMS_RTEMS_REGIONIMPL_H
#include <rtems/rtems/region.h>
#include <rtems/score/heapimpl.h>
#include <rtems/score/objectimpl.h>
#include <rtems/debug.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup ClassicRegionImpl Classic Region Manager Implementation
*
* @ingroup ClassicRegion
*
* @{
*/
/**
* @brief Instantiate RTEMS Region Data
*
* Region Manager -- Instantiate Data
*
* This constant is defined to extern most of the time when using
* this header file. However by defining it to nothing, the data
* declared in this header file can be instantiated. This is done
* in a single per manager file.
*/
#ifndef RTEMS_REGION_EXTERN
#define RTEMS_REGION_EXTERN extern
#endif
/**
* The following defines the information control block used to
* manage this class of objects.
*/
RTEMS_REGION_EXTERN Objects_Information _Region_Information;
/**
* @brief _Region_Manager_initialization
*
* Region Manager
*
* This routine performs the initialization necessary for this manager.
*/
void _Region_Manager_initialization(void);
/**
* @brief Region_Allocate
*
* This function allocates a region control block from
* the inactive chain of free region control blocks.
*/
RTEMS_INLINE_ROUTINE Region_Control *_Region_Allocate( void )
{
return (Region_Control *) _Objects_Allocate( &_Region_Information );
}
/**
* @brief Region_Free
*
* This routine frees a region control block to the
* inactive chain of free region control blocks.
*/
RTEMS_INLINE_ROUTINE void _Region_Free (
Region_Control *the_region
)
{
_Objects_Free( &_Region_Information, &the_region->Object );
}
/**
* @brief Region_Get
*
* This function maps region IDs to region control blocks.
* If ID corresponds to a local region, then it returns
* the_region control pointer which maps to ID and location
* is set to OBJECTS_LOCAL. Otherwise, location is set
* to OBJECTS_ERROR and the_region is undefined.
*/
RTEMS_INLINE_ROUTINE Region_Control *_Region_Get (
Objects_Id id,
Objects_Locations *location
)
{
return (Region_Control *)
_Objects_Get_no_protection( &_Region_Information, id, location );
}
/**
* @brief Region_Allocate_segment
*
* This function attempts to allocate a segment from the_region.
* If successful, it returns the address of the allocated segment.
* Otherwise, it returns NULL.
*/
RTEMS_INLINE_ROUTINE void *_Region_Allocate_segment (
Region_Control *the_region,
uintptr_t size
)
{
return _Heap_Allocate( &the_region->Memory, size );
}
/**
* @brief Region_Free_segment
*
* This function frees the_segment to the_region.
*/
RTEMS_INLINE_ROUTINE bool _Region_Free_segment (
Region_Control *the_region,
void *the_segment
)
{
return _Heap_Free( &the_region->Memory, the_segment );
}
/**
* @brief Region_Is_null
*
* This function returns TRUE if the_region is NULL and FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE bool _Region_Is_null (
Region_Control *the_region
)
{
return ( the_region == NULL );
}
/**
* @brief Process Region Queue
*
* This is a helper routine which is invoked any time memory is
* freed. It looks at the set of waiting tasks and attempts to
* satisfy all outstanding requests.
*
* @param[in] the_region is the the region
*/
extern void _Region_Process_queue(Region_Control *the_region);
/**
* @brief _Region_Debug_Walk
*
* This routine is invoked to verify the integrity of a heap associated
* with the_region.
*/
#ifdef RTEMS_DEBUG
#define _Region_Debug_Walk( _the_region, _source ) \
do { \
if ( rtems_debug_is_enabled( RTEMS_DEBUG_REGION ) ) \
_Heap_Walk( &(_the_region)->Memory, _source, false ); \
} while ( 0 )
#else
#define _Region_Debug_Walk( _the_region, _source )
#endif
/**@}*/
#ifdef __cplusplus
}
#endif
#if defined(RTEMS_MULTIPROCESSING)
#include <rtems/rtems/regionmp.h>
#endif
#endif
/* end of include file */
|
