diff options
Diffstat (limited to 'src/include/access/rewriteheap.h')
| -rw-r--r-- | src/include/access/rewriteheap.h | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/src/include/access/rewriteheap.h b/src/include/access/rewriteheap.h index d098a0b1711..07df3b4f2b0 100644 --- a/src/include/access/rewriteheap.h +++ b/src/include/access/rewriteheap.h @@ -14,12 +14,14 @@ #define REWRITE_HEAP_H #include "access/htup.h" +#include "storage/itemptr.h" +#include "storage/relfilenode.h" #include "utils/relcache.h" /* struct definition is private to rewriteheap.c */ typedef struct RewriteStateData *RewriteState; -extern RewriteState begin_heap_rewrite(Relation NewHeap, +extern RewriteState begin_heap_rewrite(Relation OldHeap, Relation NewHeap, TransactionId OldestXmin, TransactionId FreezeXid, MultiXactId MultiXactCutoff, bool use_wal); extern void end_heap_rewrite(RewriteState state); @@ -27,4 +29,29 @@ extern void rewrite_heap_tuple(RewriteState state, HeapTuple oldTuple, HeapTuple newTuple); extern bool rewrite_heap_dead_tuple(RewriteState state, HeapTuple oldTuple); +/* + * On-Disk data format for an individual logical rewrite mapping. + */ +typedef struct LogicalRewriteMappingData +{ + RelFileNode old_node; + RelFileNode new_node; + ItemPointerData old_tid; + ItemPointerData new_tid; +} LogicalRewriteMappingData; + +/* --- + * The filename consists out of the following, dash separated, + * components: + * 1) database oid or InvalidOid for shared relations + * 2) the oid of the relation + * 3) xid we are mapping for + * 4) upper 32bit of the LSN at which a rewrite started + * 5) lower 32bit of the LSN at which a rewrite started + * 6) xid of the xact performing the mapping + * --- + */ +#define LOGICAL_REWRITE_FORMAT "map-%x-%x-%X_%X-%x-%x" +void CheckPointLogicalRewriteHeap(void); + #endif /* REWRITE_HEAP_H */ |