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
|
/*****************************************************************************
Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2017, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
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 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 Street, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
/**************************************************//**
@file include/mtr0log.ic
Mini-transaction logging routines
Created 12/7/1995 Heikki Tuuri
*******************************************************/
#include "buf0dblwr.h"
#include "fsp0types.h"
#include "mach0data.h"
#include "trx0types.h"
/********************************************************//**
Opens a buffer to mlog. It must be closed with mlog_close.
@return buffer, NULL if log mode MTR_LOG_NONE or MTR_LOG_NO_REDO */
UNIV_INLINE
byte*
mlog_open(
/*======*/
mtr_t* mtr, /*!< in: mtr */
ulint size) /*!< in: buffer size in bytes; MUST be
smaller than mtr_t::buf_t::MAX_DATA_SIZE! */
{
mtr->set_modified();
if (mtr_get_log_mode(mtr) == MTR_LOG_NONE
|| mtr_get_log_mode(mtr) == MTR_LOG_NO_REDO) {
return(NULL);
}
return(mtr->get_log()->open(size));
}
/********************************************************//**
Closes a buffer opened to mlog. */
UNIV_INLINE
void
mlog_close(
/*=======*/
mtr_t* mtr, /*!< in: mtr */
byte* ptr) /*!< in: buffer space from ptr up was not used */
{
ut_ad(mtr_get_log_mode(mtr) != MTR_LOG_NONE);
ut_ad(mtr_get_log_mode(mtr) != MTR_LOG_NO_REDO);
mtr->get_log()->close(ptr);
}
/********************************************************//**
Catenates 1 - 4 bytes to the mtr log. The value is not compressed. */
UNIV_INLINE
void
mlog_catenate_ulint(
/*================*/
mtr_buf_t* mtr_buf, /*!< in/out: buffer to write */
ulint val, /*!< in: value to write */
mlog_id_t type) /*!< in: type of value to write */
{
compile_time_assert(MLOG_1BYTE == 1);
compile_time_assert(MLOG_2BYTES == 2);
compile_time_assert(MLOG_4BYTES == 4);
compile_time_assert(MLOG_8BYTES == 8);
byte* ptr = mtr_buf->push<byte*>(type);
switch (type) {
case MLOG_4BYTES:
mach_write_to_4(ptr, val);
break;
case MLOG_2BYTES:
mach_write_to_2(ptr, val);
break;
case MLOG_1BYTE:
mach_write_to_1(ptr, val);
break;
default:
ut_error;
}
}
/********************************************************//**
Catenates 1 - 4 bytes to the mtr log. The value is not compressed. */
UNIV_INLINE
void
mlog_catenate_ulint(
/*================*/
mtr_t* mtr, /*!< in/out: mtr */
ulint val, /*!< in: value to write */
mlog_id_t type) /*!< in: MLOG_1BYTE, MLOG_2BYTES, MLOG_4BYTES */
{
if (mtr_get_log_mode(mtr) == MTR_LOG_NONE
|| mtr_get_log_mode(mtr) == MTR_LOG_NO_REDO) {
return;
}
mlog_catenate_ulint(mtr->get_log(), val, type);
}
/********************************************************//**
Catenates a compressed ulint to mlog. */
UNIV_INLINE
void
mlog_catenate_ulint_compressed(
/*===========================*/
mtr_t* mtr, /*!< in: mtr */
ulint val) /*!< in: value to write */
{
byte* log_ptr;
log_ptr = mlog_open(mtr, 10);
/* If no logging is requested, we may return now */
if (log_ptr == NULL) {
return;
}
log_ptr += mach_write_compressed(log_ptr, val);
mlog_close(mtr, log_ptr);
}
/********************************************************//**
Catenates a compressed 64-bit integer to mlog. */
UNIV_INLINE
void
mlog_catenate_ull_compressed(
/*=========================*/
mtr_t* mtr, /*!< in: mtr */
ib_uint64_t val) /*!< in: value to write */
{
byte* log_ptr;
log_ptr = mlog_open(mtr, 15);
/* If no logging is requested, we may return now */
if (log_ptr == NULL) {
return;
}
log_ptr += mach_u64_write_compressed(log_ptr, val);
mlog_close(mtr, log_ptr);
}
/** Writes a log record about an operation.
@param[in] type redo log record type
@param[in] space_id tablespace identifier
@param[in] page_no page number
@param[in,out] log_ptr current end of mini-transaction log
@param[in,out] mtr mini-transaction
@return end of mini-transaction log */
UNIV_INLINE
byte*
mlog_write_initial_log_record_low(
mlog_id_t type,
ulint space_id,
ulint page_no,
byte* log_ptr,
mtr_t* mtr)
{
ut_ad(type <= MLOG_BIGGEST_TYPE || EXTRA_CHECK_MLOG_NUMBER(type));
ut_ad(type == MLOG_FILE_NAME
|| type == MLOG_FILE_DELETE
|| type == MLOG_FILE_CREATE2
|| type == MLOG_FILE_RENAME2
|| type == MLOG_INDEX_LOAD
|| type == MLOG_TRUNCATE
|| type == MLOG_FILE_WRITE_CRYPT_DATA
|| mtr->is_named_space(space_id));
mach_write_to_1(log_ptr, type);
log_ptr++;
log_ptr += mach_write_compressed(log_ptr, space_id);
log_ptr += mach_write_compressed(log_ptr, page_no);
mtr->added_rec();
return(log_ptr);
}
/********************************************************//**
Writes the initial part of a log record (3..11 bytes).
If the implementation of this function is changed, all
size parameters to mlog_open() should be adjusted accordingly!
@return new value of log_ptr */
UNIV_INLINE
byte*
mlog_write_initial_log_record_fast(
/*===============================*/
const byte* ptr, /*!< in: pointer to (inside) a buffer
frame holding the file page where
modification is made */
mlog_id_t type, /*!< in: log item type: MLOG_1BYTE, ... */
byte* log_ptr,/*!< in: pointer to mtr log which has
been opened */
mtr_t* mtr) /*!< in/out: mtr */
{
const byte* page;
ulint space;
ulint offset;
ut_ad(log_ptr);
ut_d(mtr->memo_modify_page(ptr));
page = (const byte*) ut_align_down(ptr, srv_page_size);
space = mach_read_from_4(page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID);
offset = mach_read_from_4(page + FIL_PAGE_OFFSET);
/* check whether the page is in the doublewrite buffer;
the doublewrite buffer is located in pages
FSP_EXTENT_SIZE, ..., 3 * FSP_EXTENT_SIZE - 1 in the
system tablespace */
if (space == TRX_SYS_SPACE
&& offset >= FSP_EXTENT_SIZE && offset < 3 * FSP_EXTENT_SIZE) {
ut_ad(buf_dblwr_being_created);
/* Do nothing: we only come to this branch in an
InnoDB database creation. We do not redo log
anything for the doublewrite buffer pages. */
return(log_ptr);
}
return(mlog_write_initial_log_record_low(type, space, offset,
log_ptr, mtr));
}
|
