Tom Lane 7c31874945 Avoid getting more than AccessShareLock when deparsing a query. ... In make_ruledef and get_query_def, we have long used AcquireRewriteLocks to ensure that the querytree we are about to deparse is up-to-date and the schemas of the underlying relations aren't changing. Howwever, that function thinks the query is about to be executed, so it acquires locks that are stronger than necessary for the purpose of deparsing. Thus for example, if pg_dump asks to deparse a rule that includes "INSERT INTO t", we'd acquire RowExclusiveLock on t. That results in interference with concurrent transactions that might for example ask for ShareLock on t. Since pg_dump is documented as being purely read-only, this is unexpected. (Worse, it used to actually be read-only; this behavior dates back only to 8.1, cf commit ba4200246.) Fix this by adding a parameter to AcquireRewriteLocks to tell it whether we want the "real" execution locks or only AccessShareLock. Report, diagnosis, and patch by Dean Rasheed. Back-patch to all supported branches.		2014-03-06 19:31:05 -05:00
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adt	Avoid getting more than AccessShareLock when deparsing a query.	2014-03-06 19:31:05 -05:00
cache	Introduce logical decoding.	2014-03-03 16:32:18 -05:00
error	Fix possible crashes due to using elog/ereport too early in startup.	2014-01-11 16:36:07 -05:00
fmgr	Prevent privilege escalation in explicit calls to PL validators.	2014-02-17 09:33:31 -05:00
hash	Update copyright for 2014	2014-01-07 16:05:30 -05:00
init	Mark some more variables as static or include the appropriate header	2014-02-08 21:21:46 -05:00
mb	Prefer pg_any_to_server/pg_server_to_any over pg_do_encoding_conversion.	2014-02-23 16:59:05 -05:00
misc	Rename huge_tlb_pages to huge_pages, and improve docs.	2014-03-03 20:52:48 +02:00
mmgr	Allow use of "z" flag in our printf calls, and use it where appropriate.	2014-01-23 17:18:33 -05:00
resowner	Update copyright for 2014	2014-01-07 16:05:30 -05:00
sort	Update copyright for 2014	2014-01-07 16:05:30 -05:00
time	Introduce logical decoding.	2014-03-03 16:32:18 -05:00
.gitignore	Avoid maintaining three separate copies of the error codes list.	2011-02-03 22:32:49 -05:00
errcodes.txt	Update copyright for 2014	2014-01-07 16:05:30 -05:00
Gen_dummy_probes.sed	Update copyright for 2014	2014-01-07 16:05:30 -05:00
Gen_fmgrtab.pl	Update copyright for 2014	2014-01-07 16:05:30 -05:00
generate-errcodes.pl	Update copyright for 2014	2014-01-07 16:05:30 -05:00
Makefile	Make handling of errcodes.h more consistent with other generated headers.	2011-02-04 09:29:10 -05:00
probes.d	Relax the requirement that all lwlocks be stored in a single array.	2014-01-27 11:07:44 -05:00