forked from mysql/mysql-server
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmyisampack.h
292 lines (251 loc) · 10.9 KB
/
myisampack.h
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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
#ifndef MYISAMPACK_INCLUDED
#define MYISAMPACK_INCLUDED
/* Copyright (c) 2000, 2024, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/**
@file include/myisampack.h
Storing of values in high byte first order.
Integer keys and file pointers are stored with high byte first to get
better compression.
*/
#include "my_config.h"
#include <sys/types.h>
#include "my_inttypes.h"
/* these two are for uniformity */
static inline int8 mi_sint1korr(const uchar *A) { return *A; }
static inline uint8 mi_uint1korr(const uchar *A) { return *A; }
static inline int16 mi_sint2korr(const uchar *A) {
return (int16)((uint32)(A[1]) + ((uint32)(A[0]) << 8));
}
static inline int32 mi_sint3korr(const uchar *A) {
return (int32)((A[0] & 128) ? ((255U << 24) | ((uint32)(A[0]) << 16) |
((uint32)(A[1]) << 8) | ((uint32)A[2]))
: (((uint32)(A[0]) << 16) |
((uint32)(A[1]) << 8) | ((uint32)(A[2]))));
}
static inline int32 mi_sint4korr(const uchar *A) {
return (int32)((uint32)(A[3]) + ((uint32)(A[2]) << 8) +
((uint32)(A[1]) << 16) + ((uint32)(A[0]) << 24));
}
static inline uint16 mi_uint2korr(const uchar *A) {
return (uint16)((uint16)A[1]) + ((uint16)A[0] << 8);
}
static inline uint32 mi_uint3korr(const uchar *A) {
return (uint32)((uint32)A[2] + ((uint32)A[1] << 8) + ((uint32)A[0] << 16));
}
static inline uint32 mi_uint4korr(const uchar *A) {
return (uint32)((uint32)A[3] + ((uint32)A[2] << 8) + ((uint32)A[1] << 16) +
((uint32)A[0] << 24));
}
static inline ulonglong mi_uint5korr(const uchar *A) {
return (ulonglong)((uint32)A[4] + ((uint32)A[3] << 8) + ((uint32)A[2] << 16) +
((uint32)A[1] << 24)) +
((ulonglong)A[0] << 32);
}
static inline ulonglong mi_uint6korr(const uchar *A) {
return (ulonglong)((uint32)A[5] + ((uint32)A[4] << 8) + ((uint32)A[3] << 16) +
((uint32)A[2] << 24)) +
(((ulonglong)((uint32)A[1] + ((uint32)A[0] << 8))) << 32);
}
static inline ulonglong mi_uint7korr(const uchar *A) {
return (ulonglong)((uint32)A[6] + ((uint32)A[5] << 8) + ((uint32)A[4] << 16) +
((uint32)A[3] << 24)) +
(((ulonglong)((uint32)A[2] + ((uint32)A[1] << 8) +
((uint32)A[0] << 16)))
<< 32);
}
static inline ulonglong mi_uint8korr(const uchar *A) {
return (ulonglong)((uint32)A[7] + ((uint32)A[6] << 8) + ((uint32)A[5] << 16) +
((uint32)A[4] << 24)) +
(((ulonglong)((uint32)A[3] + ((uint32)A[2] << 8) +
((uint32)A[1] << 16) + ((uint32)A[0] << 24)))
<< 32);
}
static inline longlong mi_sint8korr(const uchar *A) {
return (longlong)mi_uint8korr(A);
}
/* This one is for uniformity */
#define mi_int1store(T, A) *((uchar *)(T)) = (uchar)(A)
#define mi_int2store(T, A) \
{ \
const uint def_temp = (uint)(A); \
((uchar *)(T))[1] = (uchar)(def_temp); \
((uchar *)(T))[0] = (uchar)(def_temp >> 8); \
}
#define mi_int3store(T, A) \
{ /*lint -save -e734 */ \
const ulong def_temp = (ulong)(A); \
((uchar *)(T))[2] = (uchar)(def_temp); \
((uchar *)(T))[1] = (uchar)(def_temp >> 8); \
((uchar *)(T))[0] = (uchar)(def_temp >> 16); \
/*lint -restore */}
#define mi_int4store(T, A) \
{ \
const ulong def_temp = (ulong)(A); \
((uchar *)(T))[3] = (uchar)(def_temp); \
((uchar *)(T))[2] = (uchar)(def_temp >> 8); \
((uchar *)(T))[1] = (uchar)(def_temp >> 16); \
((uchar *)(T))[0] = (uchar)(def_temp >> 24); \
}
#define mi_int5store(T, A) \
{ \
const ulong def_temp = (ulong)(A), def_temp2 = (ulong)((A) >> 32); \
((uchar *)(T))[4] = (uchar)(def_temp); \
((uchar *)(T))[3] = (uchar)(def_temp >> 8); \
((uchar *)(T))[2] = (uchar)(def_temp >> 16); \
((uchar *)(T))[1] = (uchar)(def_temp >> 24); \
((uchar *)(T))[0] = (uchar)(def_temp2); \
}
#define mi_int6store(T, A) \
{ \
const ulong def_temp = (ulong)(A), def_temp2 = (ulong)((A) >> 32); \
((uchar *)(T))[5] = (uchar)(def_temp); \
((uchar *)(T))[4] = (uchar)(def_temp >> 8); \
((uchar *)(T))[3] = (uchar)(def_temp >> 16); \
((uchar *)(T))[2] = (uchar)(def_temp >> 24); \
((uchar *)(T))[1] = (uchar)(def_temp2); \
((uchar *)(T))[0] = (uchar)(def_temp2 >> 8); \
}
#define mi_int7store(T, A) \
{ \
const ulong def_temp = (ulong)(A), def_temp2 = (ulong)((A) >> 32); \
((uchar *)(T))[6] = (uchar)(def_temp); \
((uchar *)(T))[5] = (uchar)(def_temp >> 8); \
((uchar *)(T))[4] = (uchar)(def_temp >> 16); \
((uchar *)(T))[3] = (uchar)(def_temp >> 24); \
((uchar *)(T))[2] = (uchar)(def_temp2); \
((uchar *)(T))[1] = (uchar)(def_temp2 >> 8); \
((uchar *)(T))[0] = (uchar)(def_temp2 >> 16); \
}
#define mi_int8store(T, A) \
{ \
const ulong def_temp3 = (ulong)(A), def_temp4 = (ulong)((A) >> 32); \
mi_int4store((uchar *)(T) + 0, def_temp4); \
mi_int4store((uchar *)(T) + 4, def_temp3); \
}
#ifdef WORDS_BIGENDIAN
#define mi_float4store(T, A) \
{ \
((uchar *)(T))[0] = ((uchar *)&A)[0]; \
((uchar *)(T))[1] = ((uchar *)&A)[1]; \
((uchar *)(T))[2] = ((uchar *)&A)[2]; \
((uchar *)(T))[3] = ((uchar *)&A)[3]; \
}
static inline float mi_float4get(const uchar *M) {
float def_temp;
((uchar *)&def_temp)[0] = M[0];
((uchar *)&def_temp)[1] = M[1];
((uchar *)&def_temp)[2] = M[2];
((uchar *)&def_temp)[3] = M[3];
return def_temp;
}
#define mi_float8store(T, V) \
{ \
((uchar *)(T))[0] = ((uchar *)&V)[0]; \
((uchar *)(T))[1] = ((uchar *)&V)[1]; \
((uchar *)(T))[2] = ((uchar *)&V)[2]; \
((uchar *)(T))[3] = ((uchar *)&V)[3]; \
((uchar *)(T))[4] = ((uchar *)&V)[4]; \
((uchar *)(T))[5] = ((uchar *)&V)[5]; \
((uchar *)(T))[6] = ((uchar *)&V)[6]; \
((uchar *)(T))[7] = ((uchar *)&V)[7]; \
}
static inline double mi_float8get(const uchar *M) {
double def_temp;
((uchar *)&def_temp)[0] = M[0];
((uchar *)&def_temp)[1] = M[1];
((uchar *)&def_temp)[2] = M[2];
((uchar *)&def_temp)[3] = M[3];
((uchar *)&def_temp)[4] = M[4];
((uchar *)&def_temp)[5] = M[5];
((uchar *)&def_temp)[6] = M[6];
((uchar *)&def_temp)[7] = M[7];
return def_temp;
}
#else
#define mi_float4store(T, A) \
{ \
((uchar *)(T))[0] = ((uchar *)&A)[3]; \
((uchar *)(T))[1] = ((uchar *)&A)[2]; \
((uchar *)(T))[2] = ((uchar *)&A)[1]; \
((uchar *)(T))[3] = ((uchar *)&A)[0]; \
}
static inline float mi_float4get(const uchar *M) {
float def_temp;
((uchar *)&def_temp)[0] = M[3];
((uchar *)&def_temp)[1] = M[2];
((uchar *)&def_temp)[2] = M[1];
((uchar *)&def_temp)[3] = M[0];
return def_temp;
}
#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
#define mi_float8store(T, V) \
{ \
((uchar *)(T))[0] = ((uchar *)&V)[3]; \
((uchar *)(T))[1] = ((uchar *)&V)[2]; \
((uchar *)(T))[2] = ((uchar *)&V)[1]; \
((uchar *)(T))[3] = ((uchar *)&V)[0]; \
((uchar *)(T))[4] = ((uchar *)&V)[7]; \
((uchar *)(T))[5] = ((uchar *)&V)[6]; \
((uchar *)(T))[6] = ((uchar *)&V)[5]; \
((uchar *)(T))[7] = ((uchar *)&V)[4]; \
}
static inline double mi_float8get(const uchar *M) {
double def_temp;
((uchar *)&def_temp)[0] = M[3];
((uchar *)&def_temp)[1] = M[2];
((uchar *)&def_temp)[2] = M[1];
((uchar *)&def_temp)[3] = M[0];
((uchar *)&def_temp)[4] = M[7];
((uchar *)&def_temp)[5] = M[6];
((uchar *)&def_temp)[6] = M[5];
((uchar *)&def_temp)[7] = M[4];
return def_temp;
}
#else
#define mi_float8store(T, V) \
{ \
((uchar *)(T))[0] = ((uchar *)&V)[7]; \
((uchar *)(T))[1] = ((uchar *)&V)[6]; \
((uchar *)(T))[2] = ((uchar *)&V)[5]; \
((uchar *)(T))[3] = ((uchar *)&V)[4]; \
((uchar *)(T))[4] = ((uchar *)&V)[3]; \
((uchar *)(T))[5] = ((uchar *)&V)[2]; \
((uchar *)(T))[6] = ((uchar *)&V)[1]; \
((uchar *)(T))[7] = ((uchar *)&V)[0]; \
}
static inline double mi_float8get(const uchar *M) {
double def_temp;
((uchar *)&def_temp)[0] = M[7];
((uchar *)&def_temp)[1] = M[6];
((uchar *)&def_temp)[2] = M[5];
((uchar *)&def_temp)[3] = M[4];
((uchar *)&def_temp)[4] = M[3];
((uchar *)&def_temp)[5] = M[2];
((uchar *)&def_temp)[6] = M[1];
((uchar *)&def_temp)[7] = M[0];
return def_temp;
}
#endif /* __FLOAT_WORD_ORDER */
#endif /* WORDS_BIGENDIAN */
#define mi_rowstore(T, A) mi_int8store(T, A)
#define mi_rowkorr(T) mi_uint8korr(T)
#define mi_sizestore(T, A) mi_int8store(T, A)
#define mi_sizekorr(T) mi_uint8korr(T)
#endif /* MYISAMPACK_INCLUDED */