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Tom Lane 7a7d970b36 Only allow autovacuum to be auto-canceled by a directly blocked process. ... In the original coding of the autovacuum cancel feature, commit acac68b2bc, an autovacuum process was considered a target for cancellation if it was found to hard-block any process examined in the deadlock search. This patch tightens the test so that the autovacuum must directly hard-block the current process. This should make the behavior more predictable in general, and in particular it ensures that an autovacuum will not be canceled with less than deadlock_timeout grace period. In the old coding, it was possible for an autovacuum to be canceled almost instantly, given unfortunate timing of two or more other processes' lock attempts. This also justifies the logging methodology in the recent commit d7318d43d891bd63e82dcfc27948113ed7b1db80; without this restriction, that patch isn't providing enough information to see the connection of the canceling process to the autovacuum. Like that one, patch all the way back.		14 years ago
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backend	Only allow autovacuum to be auto-canceled by a directly blocked process.	14 years ago
bin	Improve pg_dump's dependency-sorting logic to enforce section dump order.	14 years ago
include	Fix whole-row Var evaluation to cope with resjunk columns (again).	14 years ago
interfaces	Update copyright year in forgotten places	14 years ago
makefiles	Fix pgxs.mk to always add --dbname=$(CONTRIB_TESTDB) to REGRESS_OPTS.	15 years ago
pl	Remove recently added PL/Perl encoding tests	14 years ago
port	Don't try to trim "../" in join_path_components().	14 years ago
template	…
test	Fix longstanding crash-safety bug with newly-created-or-reset sequences.	14 years ago
timezone	Update time zone data files to tzdata release 2012c.	14 years ago
tools	Fix MSVC builds broken by xsubpp change	14 years ago
tutorial	…
.gitignore	…
DEVELOPERS	…
Makefile	…
Makefile.global.in	Make distprep and *clean build targets recurse into all subdirectories.	15 years ago
Makefile.shlib	Use single quotes in preference to double quotes for protecting pathnames.	15 years ago
bcc32.mak	…
nls-global.mk	…
win32.mak	…