1 | /* heap.inl |
---|
2 | * |
---|
3 | * This file contains the macro implementation of the inlined |
---|
4 | * routines from the heap handler. |
---|
5 | * |
---|
6 | * COPYRIGHT (c) 1989-1997. |
---|
7 | * On-Line Applications Research Corporation (OAR). |
---|
8 | * Copyright assigned to U.S. Government, 1994. |
---|
9 | * |
---|
10 | * The license and distribution terms for this file may in |
---|
11 | * the file LICENSE in this distribution or at |
---|
12 | * http://www.OARcorp.com/rtems/license.html. |
---|
13 | * |
---|
14 | * $Id$ |
---|
15 | */ |
---|
16 | |
---|
17 | #ifndef __HEAP_inl |
---|
18 | #define __HEAP_inl |
---|
19 | |
---|
20 | #include <rtems/score/address.h> |
---|
21 | |
---|
22 | /*PAGE |
---|
23 | * |
---|
24 | * _Heap_Head |
---|
25 | */ |
---|
26 | |
---|
27 | #define _Heap_Head( _the_heap ) \ |
---|
28 | ((Heap_Block *)&(_the_heap)->start) |
---|
29 | |
---|
30 | /*PAGE |
---|
31 | * |
---|
32 | * _Heap_Tail |
---|
33 | */ |
---|
34 | |
---|
35 | #define _Heap_Tail( _the_heap ) \ |
---|
36 | ((Heap_Block *)&(_the_heap)->final) |
---|
37 | |
---|
38 | /*PAGE |
---|
39 | * |
---|
40 | * _Heap_Previous_block |
---|
41 | */ |
---|
42 | |
---|
43 | #define _Heap_Previous_block( _the_block ) \ |
---|
44 | ( (Heap_Block *) _Addresses_Subtract_offset( \ |
---|
45 | (void *)(_the_block), \ |
---|
46 | (_the_block)->back_flag & ~ HEAP_BLOCK_USED \ |
---|
47 | ) \ |
---|
48 | ) |
---|
49 | |
---|
50 | /*PAGE |
---|
51 | * |
---|
52 | * _Heap_Next_block |
---|
53 | */ |
---|
54 | |
---|
55 | #define _Heap_Next_block( _the_block ) \ |
---|
56 | ( (Heap_Block *) _Addresses_Add_offset( \ |
---|
57 | (void *)(_the_block), \ |
---|
58 | (_the_block)->front_flag & ~ HEAP_BLOCK_USED \ |
---|
59 | ) \ |
---|
60 | ) |
---|
61 | |
---|
62 | /*PAGE |
---|
63 | * |
---|
64 | * _Heap_Block_at |
---|
65 | */ |
---|
66 | |
---|
67 | #define _Heap_Block_at( _base, _offset ) \ |
---|
68 | ( (Heap_Block *) \ |
---|
69 | _Addresses_Add_offset( (void *)(_base), (_offset) ) ) |
---|
70 | |
---|
71 | /*PAGE |
---|
72 | * |
---|
73 | * _Heap_User_block_at |
---|
74 | * |
---|
75 | */ |
---|
76 | |
---|
77 | #define _Heap_User_block_at( _base ) \ |
---|
78 | _Heap_Block_at( \ |
---|
79 | (_base), \ |
---|
80 | -*(((unsigned32 *) (_base)) - 1) + -HEAP_BLOCK_USED_OVERHEAD \ |
---|
81 | ) |
---|
82 | |
---|
83 | /*PAGE |
---|
84 | * |
---|
85 | * _Heap_Is_previous_block_free |
---|
86 | */ |
---|
87 | |
---|
88 | #define _Heap_Is_previous_block_free( _the_block ) \ |
---|
89 | ( !((_the_block)->back_flag & HEAP_BLOCK_USED) ) |
---|
90 | |
---|
91 | /*PAGE |
---|
92 | * |
---|
93 | * _Heap_Is_block_free |
---|
94 | */ |
---|
95 | |
---|
96 | #define _Heap_Is_block_free( _the_block ) \ |
---|
97 | ( !((_the_block)->front_flag & HEAP_BLOCK_USED) ) |
---|
98 | |
---|
99 | /*PAGE |
---|
100 | * |
---|
101 | * _Heap_Is_block_used |
---|
102 | */ |
---|
103 | |
---|
104 | #define _Heap_Is_block_used( _the_block ) \ |
---|
105 | ((_the_block)->front_flag & HEAP_BLOCK_USED) |
---|
106 | |
---|
107 | /*PAGE |
---|
108 | * |
---|
109 | * _Heap_Block_size |
---|
110 | */ |
---|
111 | |
---|
112 | #define _Heap_Block_size( _the_block ) \ |
---|
113 | ((_the_block)->front_flag & ~HEAP_BLOCK_USED) |
---|
114 | |
---|
115 | /*PAGE |
---|
116 | * |
---|
117 | * _Heap_Start_of_user_area |
---|
118 | */ |
---|
119 | |
---|
120 | #define _Heap_Start_of_user_area( _the_block ) \ |
---|
121 | ((void *) &(_the_block)->next) |
---|
122 | |
---|
123 | /*PAGE |
---|
124 | * |
---|
125 | * _Heap_Is_block_in |
---|
126 | */ |
---|
127 | |
---|
128 | #define _Heap_Is_block_in( _the_heap, _the_block ) \ |
---|
129 | ( ((_the_block) >= (_the_heap)->start) && \ |
---|
130 | ((_the_block) <= (_the_heap)->final) ) |
---|
131 | |
---|
132 | /*PAGE |
---|
133 | * |
---|
134 | * _Heap_Is_page_size_valid |
---|
135 | */ |
---|
136 | |
---|
137 | #define _Heap_Is_page_size_valid( _page_size ) \ |
---|
138 | ( ((_page_size) != 0) && \ |
---|
139 | (((_page_size) % CPU_HEAP_ALIGNMENT) == 0) ) |
---|
140 | |
---|
141 | /*PAGE |
---|
142 | * |
---|
143 | * _Heap_Build_flag |
---|
144 | */ |
---|
145 | |
---|
146 | #define _Heap_Build_flag( _size, _in_use_flag ) \ |
---|
147 | ( (_size) | (_in_use_flag)) |
---|
148 | |
---|
149 | #endif |
---|
150 | /* end of include file */ |
---|