diff options
Diffstat (limited to 'src/include/utils/snapshot.h')
| -rw-r--r-- | src/include/utils/snapshot.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/include/utils/snapshot.h b/src/include/utils/snapshot.h index 074cc818649..bf519778df4 100644 --- a/src/include/utils/snapshot.h +++ b/src/include/utils/snapshot.h @@ -41,6 +41,7 @@ typedef bool (*SnapshotSatisfiesFunc) (HeapTuple htup, * * MVCC snapshots taken during recovery (in Hot-Standby mode) * * Historic MVCC snapshots used during logical decoding * * snapshots passed to HeapTupleSatisfiesDirty() + * * snapshots passed to HeapTupleSatisfiesNonVacuumable() * * snapshots used for SatisfiesAny, Toast, Self where no members are * accessed. * @@ -56,7 +57,8 @@ typedef struct SnapshotData /* * The remaining fields are used only for MVCC snapshots, and are normally * just zeroes in special snapshots. (But xmin and xmax are used - * specially by HeapTupleSatisfiesDirty.) + * specially by HeapTupleSatisfiesDirty, and xmin is used specially by + * HeapTupleSatisfiesNonVacuumable.) * * An MVCC snapshot can never see the effects of XIDs >= xmax. It can see * the effects of all older XIDs except those listed in the snapshot. xmin |