diff options
Diffstat (limited to 'src/include/access/heapam.h')
| -rw-r--r-- | src/include/access/heapam.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/include/access/heapam.h b/src/include/access/heapam.h index 6a2489ede3c..ab0879138f0 100644 --- a/src/include/access/heapam.h +++ b/src/include/access/heapam.h @@ -60,6 +60,15 @@ typedef struct HeapUpdateFailureData CommandId cmax; } HeapUpdateFailureData; +/* Result codes for HeapTupleSatisfiesVacuum */ +typedef enum +{ + HEAPTUPLE_DEAD, /* tuple is dead and deletable */ + HEAPTUPLE_LIVE, /* tuple is live (committed, no deleter) */ + HEAPTUPLE_RECENTLY_DEAD, /* tuple is dead, but not deletable yet */ + HEAPTUPLE_INSERT_IN_PROGRESS, /* inserting xact is still in progress */ + HEAPTUPLE_DELETE_IN_PROGRESS /* deleting xact is still in progress */ +} HTSV_Result; /* ---------------- * function prototypes for heap access method @@ -178,4 +187,29 @@ extern Size SyncScanShmemSize(void); struct VacuumParams; extern void heap_vacuum_rel(Relation onerel, int options, struct VacuumParams *params, BufferAccessStrategy bstrategy); + +/* in heap/heapam_visibility.c */ +extern bool HeapTupleSatisfiesVisibility(HeapTuple stup, Snapshot snapshot, + Buffer buffer); +extern HTSU_Result HeapTupleSatisfiesUpdate(HeapTuple stup, CommandId curcid, + Buffer buffer); +extern HTSV_Result HeapTupleSatisfiesVacuum(HeapTuple stup, TransactionId OldestXmin, + Buffer buffer); +extern void HeapTupleSetHintBits(HeapTupleHeader tuple, Buffer buffer, + uint16 infomask, TransactionId xid); +extern bool HeapTupleHeaderIsOnlyLocked(HeapTupleHeader tuple); +extern bool XidInMVCCSnapshot(TransactionId xid, Snapshot snapshot); +extern bool HeapTupleIsSurelyDead(HeapTuple htup, TransactionId OldestXmin); + +/* + * To avoid leaking too much knowledge about reorderbuffer implementation + * details this is implemented in reorderbuffer.c not heapam_visibility.c + */ +struct HTAB; +extern bool ResolveCminCmaxDuringDecoding(struct HTAB *tuplecid_data, + Snapshot snapshot, + HeapTuple htup, + Buffer buffer, + CommandId *cmin, CommandId *cmax); + #endif /* HEAPAM_H */ |