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Alvaro Herrera 01546402d4 Have pg_terminate/cancel_backend not ERROR on non-existent processes 
This worked fine for superusers, but not for ordinary users trying to
cancel their own processes.  Tweak the order the checks are done in so
that we correctly return SIGNAL_BACKEND_ERROR (which current callers
know to ignore without erroring out) so that an ordinary user can loop
through a resultset without fearing that a process might exit in the
middle of said looping -- causing the remaining processes to go
unsignalled.

Incidentally, the last in-core caller of IsBackendPid() is now gone.
However, the function is exported and must remain in place, because
there are plenty of callers in external modules.

Author: Josh Kupershmidt

Reviewed by Noah Misch
2012-09-27 12:28:59 -03:00
config Put back AC_REQUIRE([AC_STRUCT_TM]). 2012-05-14 23:06:48 -04:00
contrib pg_upgrade: Remove check for pg_config 2012-09-18 22:05:03 -04:00
doc Fix examples of how to use "su" while starting the server. 2012-09-25 13:52:57 -04:00
src Have pg_terminate/cancel_backend not ERROR on non-existent processes 2012-09-27 12:28:59 -03:00
.gitignore Add gitignore for mingw/cygwin build outputs 2011-06-09 18:11:47 +02:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Stamp 9.2.1. 2012-09-19 17:47:58 -04:00
configure.in Stamp 9.2.1. 2012-09-19 17:47:58 -04:00
COPYRIGHT Update copyright notices for year 2012. 2012-01-01 18:01:58 -05:00
GNUmakefile.in Add isolation test to check-world and installcheck-world 2012-03-05 20:19:20 +02:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
README.git Trivial typo fix. 2010-09-21 14:16:00 -04:00

README 

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/.