Tom Lane 611b4393f2 Make TransactionIdIsInProgress check transam.c's single-item XID status cache ... before it goes groveling through the ProcArray. In situations where the same recently-committed transaction ID is checked repeatedly by tqual.c, this saves a lot of shared-memory searches. And it's cheap enough that it shouldn't hurt noticeably when it doesn't help. Concept and patch by Simon, some minor tweaking and comment-cleanup by Tom.		2008-03-11 20:20:35 +00:00
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common	Remove another target I forgot during the refactoring	2008-02-19 11:49:12 +00:00
gin	Refactor backend makefiles to remove lots of duplicate code	2008-02-19 10:30:09 +00:00
gist	Refactor backend makefiles to remove lots of duplicate code	2008-02-19 10:30:09 +00:00
hash	Change hashscan.c to keep its list of active hash index scans in	2008-03-07 15:59:03 +00:00
heap	Refactor heap_page_prune so that instead of changing item states on-the-fly,	2008-03-08 21:57:59 +00:00
index	Refactor backend makefiles to remove lots of duplicate code	2008-02-19 10:30:09 +00:00
nbtree	Refactor backend makefiles to remove lots of duplicate code	2008-02-19 10:30:09 +00:00
transam	Make TransactionIdIsInProgress check transam.c's single-item XID status cache	2008-03-11 20:20:35 +00:00
Makefile	Refactor backend makefiles to remove lots of duplicate code	2008-02-19 10:30:09 +00:00