/Users/deen/code/yugabyte-db/src/postgres/src/include/access/rewriteheap.h
Line | Count | Source (jump to first uncovered line) |
1 | | /*------------------------------------------------------------------------- |
2 | | * |
3 | | * rewriteheap.h |
4 | | * Declarations for heap rewrite support functions |
5 | | * |
6 | | * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group |
7 | | * Portions Copyright (c) 1994-5, Regents of the University of California |
8 | | * |
9 | | * src/include/access/rewriteheap.h |
10 | | * |
11 | | *------------------------------------------------------------------------- |
12 | | */ |
13 | | #ifndef REWRITE_HEAP_H |
14 | | #define REWRITE_HEAP_H |
15 | | |
16 | | #include "access/htup.h" |
17 | | #include "storage/itemptr.h" |
18 | | #include "storage/relfilenode.h" |
19 | | #include "utils/relcache.h" |
20 | | |
21 | | /* struct definition is private to rewriteheap.c */ |
22 | | typedef struct RewriteStateData *RewriteState; |
23 | | |
24 | | extern RewriteState begin_heap_rewrite(Relation OldHeap, Relation NewHeap, |
25 | | TransactionId OldestXmin, TransactionId FreezeXid, |
26 | | MultiXactId MultiXactCutoff, bool use_wal); |
27 | | extern void end_heap_rewrite(RewriteState state); |
28 | | extern void rewrite_heap_tuple(RewriteState state, HeapTuple oldTuple, |
29 | | HeapTuple newTuple); |
30 | | extern bool rewrite_heap_dead_tuple(RewriteState state, HeapTuple oldTuple); |
31 | | |
32 | | /* |
33 | | * On-Disk data format for an individual logical rewrite mapping. |
34 | | */ |
35 | | typedef struct LogicalRewriteMappingData |
36 | | { |
37 | | RelFileNode old_node; |
38 | | RelFileNode new_node; |
39 | | ItemPointerData old_tid; |
40 | | ItemPointerData new_tid; |
41 | | } LogicalRewriteMappingData; |
42 | | |
43 | | /* --- |
44 | | * The filename consists of the following, dash separated, |
45 | | * components: |
46 | | * 1) database oid or InvalidOid for shared relations |
47 | | * 2) the oid of the relation |
48 | | * 3) xid we are mapping for |
49 | | * 4) upper 32bit of the LSN at which a rewrite started |
50 | | * 5) lower 32bit of the LSN at which a rewrite started |
51 | | * 6) xid of the xact performing the mapping |
52 | | * --- |
53 | | */ |
54 | 0 | #define LOGICAL_REWRITE_FORMAT "map-%x-%x-%X_%X-%x-%x" |
55 | | void CheckPointLogicalRewriteHeap(void); |
56 | | |
57 | | #endif /* REWRITE_HEAP_H */ |