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Tom Lane ae1525fdcb Fix bogus when-to-deregister-from-listener-array logic.
Since a backend adds itself to the global listener array during
Exec_ListenPreCommit, it's inappropriate for it to remove itself during
Exec_UnlistenCommit or Exec_UnlistenAllCommit --- that leads to failure
when committing a transaction that did UNLISTEN then LISTEN, since we end
up not registered though we should be.  (This leads to missing later
notifications, or to Assert failures in assert-enabled builds.)  Instead
deal with deregistering at the bottom of AtCommit_Notify, when we know the
final state of the listenChannels list.

Also, simplify the representation of registration status by replacing the
transient backendHasExecutedInitialListen flag with an amRegisteredListener
flag.

Per report from Greg Sabino Mullane.  Back-patch to 9.0, where the problem
was introduced during the LISTEN/NOTIFY rewrite.
2013-02-13 12:48:20 -05:00
config Don't reject threaded Python on FreeBSD. 2012-02-20 16:21:41 -05:00
contrib Make contrib/btree_gist's GiST penalty function a bit saner. 2013-02-07 19:14:17 -05:00
doc Stamp 9.0.12. 2013-02-04 16:28:41 -05:00
src Fix bogus when-to-deregister-from-listener-array logic. 2013-02-13 12:48:20 -05:00
.gitignore
aclocal.m4
configure Stamp 9.0.12. 2013-02-04 16:28:41 -05:00
configure.in Stamp 9.0.12. 2013-02-04 16:28:41 -05:00
COPYRIGHT Update copyrights for 2013 2013-01-01 17:14:59 -05:00
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README
README.git

PostgreSQL Database Management System
=====================================
  
This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	http://www.postgresql.org/download

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Changes between all PostgreSQL releases are recorded in the
file HISTORY.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.