summaryrefslogtreecommitdiffstats
path: root/c/src/exec/rtems/inline/part.inl
blob: 9088755aa739371db134d06d8a00867cef2f3502 (plain) (blame)
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
191
192
193
194
195
196
197
198
199
/*  part.inl
 *
 *  This file contains the macro implementation of all inlined routines
 *  in the Partition Manager.
 *
 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
 *  On-Line Applications Research Corporation (OAR).
 *  All rights assigned to U.S. Government, 1994.
 *
 *  This material may be reproduced by or for the U.S. Government pursuant
 *  to the copyright license under the clause at DFARS 252.227-7013.  This
 *  notice must appear in all copies of this file and its derivatives.
 *
 *  $Id$
 */

#ifndef __PARTITION_inl
#define __PARTITION_inl

/*PAGE
 *
 *  _Partition_Allocate_buffer
 *
 *  DESCRIPTION:
 *
 *  This function attempts to allocate a buffer from the_partition.
 *  If successful, it returns the address of the allocated buffer.
 *  Otherwise, it returns NULL.
 */

STATIC INLINE void *_Partition_Allocate_buffer (
   Partition_Control *the_partition
)
{
  return _Chain_Get( &the_partition->Memory );
}

/*PAGE
 *
 *  _Partition_Free_buffer
 *
 *  DESCRIPTION:
 *
 *  This routine frees the_buffer to the_partition.
 */

STATIC INLINE void _Partition_Free_buffer (
  Partition_Control *the_partition,
  Chain_Node        *the_buffer
)
{
  _Chain_Append( &the_partition->Memory, the_buffer );
}

/*PAGE
 *
 *  _Partition_Is_buffer_on_boundary
 *
 *  DESCRIPTION:
 *
 *  This function returns TRUE if the_buffer is on a valid buffer
 *  boundary for the_partition, and FALSE otherwise.
 */

STATIC INLINE boolean _Partition_Is_buffer_on_boundary (
  void              *the_buffer,
  Partition_Control *the_partition
)
{
  unsigned32   offset;

  offset = (unsigned32) _Addresses_Subtract(
    the_buffer,
    the_partition->starting_address
  );

  return ((offset % the_partition->buffer_size) == 0);
}

/*PAGE
 *
 *  _Partition_Is_buffer_valid
 *
 *  DESCRIPTION:
 *
 *  This function returns TRUE if the_buffer is a valid buffer from
 *  the_partition, otherwise FALSE is returned.
 */

STATIC INLINE boolean _Partition_Is_buffer_valid (
   Chain_Node        *the_buffer,
   Partition_Control *the_partition
)
{
  void *starting;
  void *ending;

  starting = the_partition->starting_address;
  ending   = _Addresses_Add_offset( starting, the_partition->length );

  return (
    _Addresses_Is_in_range( the_buffer, starting, ending ) &&
    _Partition_Is_buffer_on_boundary( the_buffer, the_partition )
  );
}

/*PAGE
 *
 *  _Partition_Is_buffer_size_aligned
 *
 *  DESCRIPTION:
 *
 *  This function returns TRUE if the use of the specified buffer_size
 *  will result in the allocation of buffers whose first byte is
 *  properly aligned, and FALSE otherwise.
 */

STATIC INLINE boolean _Partition_Is_buffer_size_aligned (
   unsigned32 buffer_size
)
{
  return ((buffer_size % CPU_PARTITION_ALIGNMENT) == 0);
}

/*PAGE
 *
 *  _Partition_Allocate
 *
 *  DESCRIPTION:
 *
 *  This function allocates a partition control block from
 *  the inactive chain of free partition control blocks.
 */

STATIC INLINE Partition_Control *_Partition_Allocate ( void )
{
  return (Partition_Control *) _Objects_Allocate( &_Partition_Information );
}

/*PAGE
 *
 *  _Partition_Free
 *
 *  DESCRIPTION:
 *
 *  This routine frees a partition control block to the
 *  inactive chain of free partition control blocks.
 */

STATIC INLINE void _Partition_Free (
   Partition_Control *the_partition
)
{
  _Objects_Free( &_Partition_Information, &the_partition->Object );
}

/*PAGE
 *
 *  _Partition_Get
 *
 *  DESCRIPTION:
 *
 *  This function maps partition IDs to partition control blocks.
 *  If ID corresponds to a local partition, then it returns
 *  the_partition control pointer which maps to ID and location
 *  is set to OBJECTS_LOCAL.  If the partition ID is global and
 *  resides on a remote node, then location is set to OBJECTS_REMOTE,
 *  and the_partition is undefined.  Otherwise, location is set
 *  to OBJECTS_ERROR and the_partition is undefined.
 */

STATIC INLINE Partition_Control *_Partition_Get (
  Objects_Id         id,
  Objects_Locations *location
)
{
  return (Partition_Control *)
    _Objects_Get( &_Partition_Information, id, location );
}

/*PAGE
 *
 *  _Partition_Is_null
 *
 *  DESCRIPTION:
 *
 *  This function returns TRUE if the_partition is NULL
 *  and FALSE otherwise.
 */

STATIC INLINE boolean _Partition_Is_null (
   Partition_Control *the_partition
)
{
   return ( the_partition == NULL  );
}

#endif
/* end of include file */