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Tom Lane 895a94de6d Avoid incrementing the CommandCounter when CommandCounterIncrement is called ... but no database changes have been made since the last CommandCounterIncrement. This should result in a significant improvement in the number of "commands" that can typically be performed within a transaction before hitting the 2^32 CommandId size limit. In particular this buys back (and more) the possible adverse consequences of my previous patch to fix plan caching behavior. The implementation requires tracking whether the current CommandCounter value has been "used" to mark any tuples. CommandCounter values stored into snapshots are presumed not to be used for this purpose. This requires some small executor changes, since the executor used to conflate the curcid of the snapshot it was using with the command ID to mark output tuples with. Separating these concepts allows some small simplifications in executor APIs. Something for the TODO list: look into having CommandCounterIncrement not do AcceptInvalidationMessages. It seems fairly bogus to be doing it there, but exactly where to do it instead isn't clear, and I'm disinclined to mess with asynchronous behavior during late beta.		18 years ago
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Makefile	Tsearch2 functionality migrates to core. The bulk of this work is by	19 years ago
catcache.c	pgindent run for 8.3.	18 years ago
inval.c	Avoid incrementing the CommandCounter when CommandCounterIncrement is called	18 years ago
lsyscache.c	pgindent run for 8.3.	18 years ago
plancache.c	Re-run pgindent with updated list of typedefs. (Updated README should	18 years ago
relcache.c	Improve test coverage of CLOBBER_CACHE_ALWAYS by having it also force	18 years ago
syscache.c	Tsearch2 functionality migrates to core. The bulk of this work is by	19 years ago
ts_cache.c	pgindent run for 8.3.	18 years ago
typcache.c	pgindent run for 8.3.	18 years ago