TLA Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * index.h
4 : * prototypes for catalog/index.c.
5 : *
6 : *
7 : * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
8 : * Portions Copyright (c) 1994, Regents of the University of California
9 : *
10 : * src/include/catalog/index.h
11 : *
12 : *-------------------------------------------------------------------------
13 : */
14 : #ifndef INDEX_H
15 : #define INDEX_H
16 :
17 : #include "catalog/objectaddress.h"
18 : #include "nodes/execnodes.h"
19 :
20 :
21 : #define DEFAULT_INDEX_TYPE "btree"
22 :
23 : /* Action code for index_set_state_flags */
24 : typedef enum
25 : {
26 : INDEX_CREATE_SET_READY,
27 : INDEX_CREATE_SET_VALID,
28 : INDEX_DROP_CLEAR_VALID,
29 : INDEX_DROP_SET_DEAD
30 : } IndexStateFlagsAction;
31 :
32 : /* options for REINDEX */
33 : typedef struct ReindexParams
34 : {
35 : bits32 options; /* bitmask of REINDEXOPT_* */
36 : Oid tablespaceOid; /* New tablespace to move indexes to.
37 : * InvalidOid to do nothing. */
38 : } ReindexParams;
39 :
40 : /* flag bits for ReindexParams->flags */
41 : #define REINDEXOPT_VERBOSE 0x01 /* print progress info */
42 : #define REINDEXOPT_REPORT_PROGRESS 0x02 /* report pgstat progress */
43 : #define REINDEXOPT_MISSING_OK 0x04 /* skip missing relations */
44 : #define REINDEXOPT_CONCURRENTLY 0x08 /* concurrent mode */
45 :
46 : /* state info for validate_index bulkdelete callback */
47 : typedef struct ValidateIndexState
48 : {
49 : Tuplesortstate *tuplesort; /* for sorting the index TIDs */
50 : /* statistics (for debug purposes only): */
51 : double htups,
52 : itups,
53 : tups_inserted;
54 : } ValidateIndexState;
55 :
56 : extern void index_check_primary_key(Relation heapRel,
57 : IndexInfo *indexInfo,
58 : bool is_alter_table,
59 : IndexStmt *stmt);
60 :
61 : #define INDEX_CREATE_IS_PRIMARY (1 << 0)
62 : #define INDEX_CREATE_ADD_CONSTRAINT (1 << 1)
63 : #define INDEX_CREATE_SKIP_BUILD (1 << 2)
64 : #define INDEX_CREATE_CONCURRENT (1 << 3)
65 : #define INDEX_CREATE_IF_NOT_EXISTS (1 << 4)
66 : #define INDEX_CREATE_PARTITIONED (1 << 5)
67 : #define INDEX_CREATE_INVALID (1 << 6)
68 :
69 : extern Oid index_create(Relation heapRelation,
70 : const char *indexRelationName,
71 : Oid indexRelationId,
72 : Oid parentIndexRelid,
73 : Oid parentConstraintId,
74 : RelFileNumber relFileNumber,
75 : IndexInfo *indexInfo,
76 : List *indexColNames,
77 : Oid accessMethodObjectId,
78 : Oid tableSpaceId,
79 : Oid *collationObjectId,
80 : Oid *classObjectId,
81 : int16 *coloptions,
82 : Datum reloptions,
83 : bits16 flags,
84 : bits16 constr_flags,
85 : bool allow_system_table_mods,
86 : bool is_internal,
87 : Oid *constraintId);
88 :
89 : #define INDEX_CONSTR_CREATE_MARK_AS_PRIMARY (1 << 0)
90 : #define INDEX_CONSTR_CREATE_DEFERRABLE (1 << 1)
91 : #define INDEX_CONSTR_CREATE_INIT_DEFERRED (1 << 2)
92 : #define INDEX_CONSTR_CREATE_UPDATE_INDEX (1 << 3)
93 : #define INDEX_CONSTR_CREATE_REMOVE_OLD_DEPS (1 << 4)
94 :
95 : extern Oid index_concurrently_create_copy(Relation heapRelation,
96 : Oid oldIndexId,
97 : Oid tablespaceOid,
98 : const char *newName);
99 :
100 : extern void index_concurrently_build(Oid heapRelationId,
101 : Oid indexRelationId);
102 :
103 : extern void index_concurrently_swap(Oid newIndexId,
104 : Oid oldIndexId,
105 : const char *oldName);
106 :
107 : extern void index_concurrently_set_dead(Oid heapId,
108 : Oid indexId);
109 :
110 : extern ObjectAddress index_constraint_create(Relation heapRelation,
111 : Oid indexRelationId,
112 : Oid parentConstraintId,
113 : IndexInfo *indexInfo,
114 : const char *constraintName,
115 : char constraintType,
116 : bits16 constr_flags,
117 : bool allow_system_table_mods,
118 : bool is_internal);
119 :
120 : extern void index_drop(Oid indexId, bool concurrent, bool concurrent_lock_mode);
121 :
122 : extern IndexInfo *BuildIndexInfo(Relation index);
123 :
124 : extern IndexInfo *BuildDummyIndexInfo(Relation index);
125 :
126 : extern bool CompareIndexInfo(IndexInfo *info1, IndexInfo *info2,
127 : Oid *collations1, Oid *collations2,
128 : Oid *opfamilies1, Oid *opfamilies2,
129 : AttrMap *attmap);
130 :
131 : extern void BuildSpeculativeIndexInfo(Relation index, IndexInfo *ii);
132 :
133 : extern void FormIndexDatum(IndexInfo *indexInfo,
134 : TupleTableSlot *slot,
135 : EState *estate,
136 : Datum *values,
137 : bool *isnull);
138 :
139 : extern void index_build(Relation heapRelation,
140 : Relation indexRelation,
141 : IndexInfo *indexInfo,
142 : bool isreindex,
143 : bool parallel);
144 :
145 : extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
146 :
147 : extern void index_set_state_flags(Oid indexId, IndexStateFlagsAction action);
148 :
149 : extern Oid IndexGetRelation(Oid indexId, bool missing_ok);
150 :
151 : extern void reindex_index(Oid indexId, bool skip_constraint_checks,
152 : char persistence, ReindexParams *params);
153 :
154 : /* Flag bits for reindex_relation(): */
155 : #define REINDEX_REL_PROCESS_TOAST 0x01
156 : #define REINDEX_REL_SUPPRESS_INDEX_USE 0x02
157 : #define REINDEX_REL_CHECK_CONSTRAINTS 0x04
158 : #define REINDEX_REL_FORCE_INDEXES_UNLOGGED 0x08
159 : #define REINDEX_REL_FORCE_INDEXES_PERMANENT 0x10
160 :
161 : extern bool reindex_relation(Oid relid, int flags, ReindexParams *params);
162 :
163 : extern bool ReindexIsProcessingHeap(Oid heapOid);
164 : extern bool ReindexIsProcessingIndex(Oid indexOid);
165 :
166 : extern void ResetReindexState(int nestLevel);
167 : extern Size EstimateReindexStateSpace(void);
168 : extern void SerializeReindexState(Size maxsize, char *start_address);
169 : extern void RestoreReindexState(void *reindexstate);
170 :
171 : extern void IndexSetParentIndex(Relation partitionIdx, Oid parentOid);
172 :
173 :
174 : /*
175 : * itemptr_encode - Encode ItemPointer as int64/int8
176 : *
177 : * This representation must produce values encoded as int64 that sort in the
178 : * same order as their corresponding original TID values would (using the
179 : * default int8 opclass to produce a result equivalent to the default TID
180 : * opclass).
181 : *
182 : * As noted in validate_index(), this can be significantly faster.
183 : */
184 : static inline int64
185 CBC 23777794 : itemptr_encode(ItemPointer itemptr)
186 : {
187 23777794 : BlockNumber block = ItemPointerGetBlockNumber(itemptr);
188 23777794 : OffsetNumber offset = ItemPointerGetOffsetNumber(itemptr);
189 : int64 encoded;
190 :
191 : /*
192 : * Use the 16 least significant bits for the offset. 32 adjacent bits are
193 : * used for the block number. Since remaining bits are unused, there
194 : * cannot be negative encoded values (We assume a two's complement
195 : * representation).
196 : */
197 23777794 : encoded = ((uint64) block << 16) | (uint16) offset;
198 :
199 23777794 : return encoded;
200 : }
201 :
202 : /*
203 : * itemptr_decode - Decode int64/int8 representation back to ItemPointer
204 : */
205 : static inline void
206 16085 : itemptr_decode(ItemPointer itemptr, int64 encoded)
207 : {
208 16085 : BlockNumber block = (BlockNumber) (encoded >> 16);
209 16085 : OffsetNumber offset = (OffsetNumber) (encoded & 0xFFFF);
210 :
211 16085 : ItemPointerSet(itemptr, block, offset);
212 16085 : }
213 :
214 : #endif /* INDEX_H */
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