Tom Lane 493f72606b Renumber SnapshotNow and the other special snapshot codes so that ...

((Snapshot) NULL) can no longer be confused with a valid snapshot,
as per my recent suggestion.  Define a macro InvalidSnapshot for 0.
Use InvalidSnapshot instead of SnapshotAny as the do-nothing special
case for heap_update and heap_delete crosschecks; this seems a little
cleaner even though the behavior is really the same.

2004-09-11 18:28:34 +00:00

30 KiB

Raw Blame History

View Raw