-
Notifications
You must be signed in to change notification settings - Fork 253
/
controldata.h
389 lines (304 loc) · 12.1 KB
/
controldata.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
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
/*
* controldata.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021
*
* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*/
#ifndef _CONTROLDATA_H_
#define _CONTROLDATA_H_
#include "postgres_fe.h"
#include "catalog/pg_control.h"
#define MAX_VERSION_STRING 24
/*
* A simplified representation of pg_control containing only those fields
* required by repmgr.
*/
typedef struct
{
bool control_file_processed;
uint64 system_identifier;
DBState state;
XLogRecPtr checkPoint;
uint32 data_checksum_version;
TimeLineID timeline;
TimeLineID minRecoveryPointTLI;
XLogRecPtr minRecoveryPoint;
} ControlFileInfo;
typedef struct CheckPoint94
{
XLogRecPtr redo; /* next RecPtr available when we began to
* create CheckPoint (i.e. REDO start point) */
TimeLineID ThisTimeLineID; /* current TLI */
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
* timeline (equals ThisTimeLineID otherwise) */
bool fullPageWrites; /* current full_page_writes */
uint32 nextXidEpoch; /* higher-order bits of nextXid */
TransactionId nextXid; /* next free XID */
Oid nextOid; /* next free OID */
MultiXactId nextMulti; /* next free MultiXactId */
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
Oid oldestXidDB; /* database with minimum datfrozenxid */
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
Oid oldestMultiDB; /* database with minimum datminmxid */
pg_time_t time; /* time stamp of checkpoint */
TransactionId oldestActiveXid;
} CheckPoint94;
/* Same for 9.5, 9.6, 10, 11 */
typedef struct CheckPoint95
{
XLogRecPtr redo; /* next RecPtr available when we began to
* create CheckPoint (i.e. REDO start point) */
TimeLineID ThisTimeLineID; /* current TLI */
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
* timeline (equals ThisTimeLineID otherwise) */
bool fullPageWrites; /* current full_page_writes */
uint32 nextXidEpoch; /* higher-order bits of nextXid */
TransactionId nextXid; /* next free XID */
Oid nextOid; /* next free OID */
MultiXactId nextMulti; /* next free MultiXactId */
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
Oid oldestXidDB; /* database with minimum datfrozenxid */
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
Oid oldestMultiDB; /* database with minimum datminmxid */
pg_time_t time; /* time stamp of checkpoint */
TransactionId oldestCommitTsXid; /* oldest Xid with valid commit
* timestamp */
TransactionId newestCommitTsXid; /* newest Xid with valid commit
* timestamp */
TransactionId oldestActiveXid;
} CheckPoint95;
#if PG_ACTUAL_VERSION_NUM >= 120000
/*
* Following fields removed in PostgreSQL 12;
*
* uint32 nextXidEpoch;
* TransactionId nextXid;
*
* and replaced by:
*
* FullTransactionId nextFullXid;
*/
typedef struct CheckPoint12
{
XLogRecPtr redo; /* next RecPtr available when we began to
* create CheckPoint (i.e. REDO start point) */
TimeLineID ThisTimeLineID; /* current TLI */
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
* timeline (equals ThisTimeLineID otherwise) */
bool fullPageWrites; /* current full_page_writes */
FullTransactionId nextFullXid; /* next free full transaction ID */
Oid nextOid; /* next free OID */
MultiXactId nextMulti; /* next free MultiXactId */
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
Oid oldestXidDB; /* database with minimum datfrozenxid */
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
Oid oldestMultiDB; /* database with minimum datminmxid */
pg_time_t time; /* time stamp of checkpoint */
TransactionId oldestCommitTsXid; /* oldest Xid with valid commit
* timestamp */
TransactionId newestCommitTsXid; /* newest Xid with valid commit
* timestamp */
/*
* Oldest XID still running. This is only needed to initialize hot standby
* mode from an online checkpoint, so we only bother calculating this for
* online checkpoints and only when wal_level is replica. Otherwise it's
* set to InvalidTransactionId.
*/
TransactionId oldestActiveXid;
} CheckPoint12;
#endif
typedef struct ControlFileData94
{
uint64 system_identifier;
uint32 pg_control_version; /* PG_CONTROL_VERSION */
uint32 catalog_version_no; /* see catversion.h */
DBState state; /* see enum above */
pg_time_t time; /* time stamp of last pg_control update */
XLogRecPtr checkPoint; /* last check point record ptr */
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
CheckPoint94 checkPointCopy; /* copy of last check point record */
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
XLogRecPtr minRecoveryPoint;
TimeLineID minRecoveryPointTLI;
XLogRecPtr backupStartPoint;
XLogRecPtr backupEndPoint;
bool backupEndRequired;
int wal_level;
bool wal_log_hints;
int MaxConnections;
int max_worker_processes;
int max_prepared_xacts;
int max_locks_per_xact;
uint32 maxAlign; /* alignment requirement for tuples */
double floatFormat; /* constant 1234567.0 */
uint32 blcksz; /* data block size for this DB */
uint32 relseg_size; /* blocks per segment of large relation */
uint32 xlog_blcksz; /* block size within WAL files */
uint32 xlog_seg_size; /* size of each WAL segment */
uint32 nameDataLen; /* catalog name field width */
uint32 indexMaxKeys; /* max number of columns in an index */
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
uint32 loblksize; /* chunk size in pg_largeobject */
bool enableIntTimes; /* int64 storage enabled? */
bool float4ByVal; /* float4 pass-by-value? */
bool float8ByVal; /* float8, int8, etc pass-by-value? */
/* Are data pages protected by checksums? Zero if no checksum version */
uint32 data_checksum_version;
} ControlFileData94;
/*
* Following field added since 9.4:
*
* bool track_commit_timestamp;
*
* Unchanged in 9.6
*
* In 10, following field appended *after* "data_checksum_version":
*
* char mock_authentication_nonce[MOCK_AUTH_NONCE_LEN];
*
* (but we don't care about that)
*/
typedef struct ControlFileData95
{
uint64 system_identifier;
uint32 pg_control_version; /* PG_CONTROL_VERSION */
uint32 catalog_version_no; /* see catversion.h */
DBState state; /* see enum above */
pg_time_t time; /* time stamp of last pg_control update */
XLogRecPtr checkPoint; /* last check point record ptr */
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
CheckPoint95 checkPointCopy; /* copy of last check point record */
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
XLogRecPtr minRecoveryPoint;
TimeLineID minRecoveryPointTLI;
XLogRecPtr backupStartPoint;
XLogRecPtr backupEndPoint;
bool backupEndRequired;
int wal_level;
bool wal_log_hints;
int MaxConnections;
int max_worker_processes;
int max_prepared_xacts;
int max_locks_per_xact;
bool track_commit_timestamp;
uint32 maxAlign; /* alignment requirement for tuples */
double floatFormat; /* constant 1234567.0 */
uint32 blcksz; /* data block size for this DB */
uint32 relseg_size; /* blocks per segment of large relation */
uint32 xlog_blcksz; /* block size within WAL files */
uint32 xlog_seg_size; /* size of each WAL segment */
uint32 nameDataLen; /* catalog name field width */
uint32 indexMaxKeys; /* max number of columns in an index */
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
uint32 loblksize; /* chunk size in pg_largeobject */
bool enableIntTimes; /* int64 storage enabled? */
bool float4ByVal; /* float4 pass-by-value? */
bool float8ByVal; /* float8, int8, etc pass-by-value? */
uint32 data_checksum_version;
} ControlFileData95;
/*
* Following field removed in 11:
*
* XLogRecPtr prevCheckPoint;
*
* In 10, following field appended *after* "data_checksum_version":
*
* char mock_authentication_nonce[MOCK_AUTH_NONCE_LEN];
*
* (but we don't care about that)
*/
typedef struct ControlFileData11
{
uint64 system_identifier;
uint32 pg_control_version; /* PG_CONTROL_VERSION */
uint32 catalog_version_no; /* see catversion.h */
DBState state; /* see enum above */
pg_time_t time; /* time stamp of last pg_control update */
XLogRecPtr checkPoint; /* last check point record ptr */
CheckPoint95 checkPointCopy; /* copy of last check point record */
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
XLogRecPtr minRecoveryPoint;
TimeLineID minRecoveryPointTLI;
XLogRecPtr backupStartPoint;
XLogRecPtr backupEndPoint;
bool backupEndRequired;
int wal_level;
bool wal_log_hints;
int MaxConnections;
int max_worker_processes;
int max_prepared_xacts;
int max_locks_per_xact;
bool track_commit_timestamp;
uint32 maxAlign; /* alignment requirement for tuples */
double floatFormat; /* constant 1234567.0 */
uint32 blcksz; /* data block size for this DB */
uint32 relseg_size; /* blocks per segment of large relation */
uint32 xlog_blcksz; /* block size within WAL files */
uint32 xlog_seg_size; /* size of each WAL segment */
uint32 nameDataLen; /* catalog name field width */
uint32 indexMaxKeys; /* max number of columns in an index */
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
uint32 loblksize; /* chunk size in pg_largeobject */
bool enableIntTimes; /* int64 storage enabled? */
bool float4ByVal; /* float4 pass-by-value? */
bool float8ByVal; /* float8, int8, etc pass-by-value? */
uint32 data_checksum_version;
} ControlFileData11;
#if PG_ACTUAL_VERSION_NUM >= 120000
/*
* Following field added in Pg12:
*
* int max_wal_senders;
*/
typedef struct ControlFileData12
{
uint64 system_identifier;
uint32 pg_control_version; /* PG_CONTROL_VERSION */
uint32 catalog_version_no; /* see catversion.h */
DBState state; /* see enum above */
pg_time_t time; /* time stamp of last pg_control update */
XLogRecPtr checkPoint; /* last check point record ptr */
CheckPoint12 checkPointCopy; /* copy of last check point record */
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
XLogRecPtr minRecoveryPoint;
TimeLineID minRecoveryPointTLI;
XLogRecPtr backupStartPoint;
XLogRecPtr backupEndPoint;
bool backupEndRequired;
int wal_level;
bool wal_log_hints;
int MaxConnections;
int max_worker_processes;
int max_wal_senders;
int max_prepared_xacts;
int max_locks_per_xact;
bool track_commit_timestamp;
uint32 maxAlign; /* alignment requirement for tuples */
double floatFormat; /* constant 1234567.0 */
uint32 blcksz; /* data block size for this DB */
uint32 relseg_size; /* blocks per segment of large relation */
uint32 xlog_blcksz; /* block size within WAL files */
uint32 xlog_seg_size; /* size of each WAL segment */
uint32 nameDataLen; /* catalog name field width */
uint32 indexMaxKeys; /* max number of columns in an index */
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
uint32 loblksize; /* chunk size in pg_largeobject */
bool float4ByVal; /* float4 pass-by-value? */
bool float8ByVal; /* float8, int8, etc pass-by-value? */
uint32 data_checksum_version;
} ControlFileData12;
#endif
extern int get_pg_version(const char *data_directory, char *version_string);
extern bool get_db_state(const char *data_directory, DBState *state);
extern const char *describe_db_state(DBState state);
extern int get_data_checksum_version(const char *data_directory);
extern uint64 get_system_identifier(const char *data_directory);
extern XLogRecPtr get_latest_checkpoint_location(const char *data_directory);
extern TimeLineID get_timeline(const char *data_directory);
extern TimeLineID get_min_recovery_end_timeline(const char *data_directory);
extern XLogRecPtr get_min_recovery_location(const char *data_directory);
#endif /* _CONTROLDATA_H_ */