Tom Lane e85a01df67 Clean up the representation of special snapshots by including a "method ... pointer" in every Snapshot struct. This allows removal of the case-by-case tests in HeapTupleSatisfiesVisibility, which should make it a bit faster (I didn't try any performance tests though). More importantly, we are no longer violating portable C practices by assuming that small integers are distinct from all pointer values, and HeapTupleSatisfiesDirty no longer has a non-reentrant API involving side-effects on a global variable. There were a couple of places calling HeapTupleSatisfiesXXX routines directly rather than through the HeapTupleSatisfiesVisibility macro. Since these places had to be changed anyway, I chose to make them go through the macro for uniformity. Along the way I renamed HeapTupleSatisfiesSnapshot to HeapTupleSatisfiesMVCC to emphasize that it's only used with MVCC-type snapshots. I was sorely tempted to rename HeapTupleSatisfiesVisibility to HeapTupleSatisfiesSnapshot, but forebore for the moment to avoid confusion and reduce the likelihood that this patch breaks some of the pending patches. Might want to reconsider doing that later.		2007-03-25 19:45:14 +00:00
..
common	Replace direct assignments to VARATT_SIZEP(x) with SET_VARSIZE(x, len).	2007-02-27 23:48:10 +00:00
gin	Fix a few typos in comments in GiN.	2007-02-01 04:16:08 +00:00
gist	Wording cleanup for error messages. Also change can't -> cannot.	2007-02-01 19:10:30 +00:00
hash	Wording cleanup for error messages. Also change can't -> cannot.	2007-02-01 19:10:30 +00:00
heap	Clean up the representation of special snapshots by including a "method	2007-03-25 19:45:14 +00:00
index	Refactor the index AM API slightly: move currentItemData and	2007-01-20 18:43:35 +00:00
nbtree	Clean up the representation of special snapshots by including a "method	2007-03-25 19:45:14 +00:00
transam	Arrange for PreventTransactionChain to reject commands submitted as part	2007-03-22 19:55:04 +00:00
Makefile	Replace useless uses of := by = in makefiles.	2007-02-09 15:56:00 +00:00