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Tom Lane bd272cace6 Mega-commit to make heap_open/heap_openr/heap_close take an ... additional argument specifying the kind of lock to acquire/release (or 'NoLock' to do no lock processing). Ensure that all relations are locked with some appropriate lock level before being examined --- this ensures that relevant shared-inval messages have been processed and should prevent problems caused by concurrent VACUUM. Fix several bugs having to do with mismatched increment/decrement of relation ref count and mismatched heap_open/close (which amounts to the same thing). A bogus ref count on a relation doesn't matter much *unless* a SI Inval message happens to arrive at the wrong time, which is probably why we got away with this sloppiness for so long. Repair missing grab of AccessExclusiveLock in DROP TABLE, ALTER/RENAME TABLE, etc, as noted by Hiroshi. Recommend 'make clean all' after pulling this update; I modified the Relation struct layout slightly. Will post further discussion to pghackers list shortly.		27 years ago
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Makefile	Hi,	27 years ago
misc_utils.c	Mega-commit to make heap_open/heap_openr/heap_close take an	27 years ago
misc_utils.doc	From: Massimo Dal Zotto <dz@cs.unitn.it>	28 years ago
misc_utils.h	Hi,	27 years ago
misc_utils.sql.in	Hi,	27 years ago