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Tom Lane 0d52d7a71e Fix LISTEN/NOTIFY race condition reported by Laurent Birtz, by postponing
pg_listener modifications commanded by LISTEN and UNLISTEN until the end
of the current transaction.  This allows us to hold the ExclusiveLock on
pg_listener until after commit, with no greater risk of deadlock than there
was before.  Aside from fixing the race condition, this gets rid of a
truly ugly kludge that was there before, namely having to ignore
HeapTupleBeingUpdated failures during NOTIFY.  There is a small potential
incompatibility, which is that if a transaction issues LISTEN or UNLISTEN
and then looks into pg_listener before committing, it won't see any resulting
row insertion or deletion, where before it would have.  It seems unlikely
that anyone would be depending on that, though.
2008-03-12 20:12:48 +00:00
config Handle draft version of getpwuid_r() that accepts only four arguments. 2004-03-20 15:39:40 +00:00
contrib The original patch to disallow non-passworded connections to non-superusers 2008-01-03 21:28:55 +00:00
doc Fix an ancient oversight in libpq's handling of V3-protocol COPY OUT mode: 2008-01-14 18:46:49 +00:00
src Fix LISTEN/NOTIFY race condition reported by Laurent Birtz, by postponing 2008-03-12 20:12:48 +00:00
aclocal.m4 Remove leftovers from subproject removals. Fixes for Python and Kerberos 2002-09-04 22:54:18 +00:00
configure Use our own getopt() and getopt_long() on Solaris, because that platform's 2008-02-24 05:22:44 +00:00
configure.in Use our own getopt() and getopt_long() on Solaris, because that platform's 2008-02-24 05:22:44 +00:00
COPYRIGHT Fix some copyright notices that weren't updated. Improve copyright tool 2003-08-04 23:59:41 +00:00
GNUmakefile.in Remove README.CVS when making a distribution. 2004-06-13 21:50:04 +00:00
Makefile Restructure the key include files per recent pghackers discussion: there 2001-02-10 02:31:31 +00:00
README Improve wording. 2002-11-11 20:03:40 +00:00
README.CVS Some further editorializing on README.CVS. 2004-03-28 06:09:14 +00:00

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 several language
bindings, including C, Perl, Python, and Tcl, as well as a JDBC
driver.

The ODBC and C++ interfaces have been moved to the PostgreSQL Projects
Web Site at http://gborg.postgresql.org for separate maintenance.

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
ftp://ftp.postgresql.org/pub/.  For more information look at our web
site located at http://www.postgresql.org/.