postgresql

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Tom Lane 29692bdbb1 Fix treatment of lpNumberOfBytesRecvd == 0: that's a completion condition. pgwin32_recv() has treated a non-error return of zero bytes from WSARecv() as being a reason to block ever since the current implementation was introduced in commit `a4c40f140d`. However, so far as one can tell from Microsoft's documentation, that is just wrong: what it means is graceful connection closure (in stream protocols) or receipt of a zero-length message (in message protocols), and neither case should result in blocking here. The only reason the code worked at all was that control then fell into the retry loop, which did not* treat zero bytes specially, so we'd get out after only wasting some cycles. But as of 9.5 we do not normally reach the retry loop and so the bug is exposed, as reported by Shay Rojansky and diagnosed by Andres Freund. Remove the unnecessary test on the byte count, and rearrange the code in the retry loop so that it looks identical to the initial sequence. Back-patch to 9.5. The code is wrong all the way back, AFAICS, but since it's relatively harmless in earlier branches we'll leave it alone.		2016-01-03 13:56:29 -05:00
config	Install our "missing" script where PGXS builds can find it.	2015-12-11 16:15:06 -05:00
contrib	Add a comment noting that FDWs don't have to implement EXCEPT or LIMIT TO.	2015-12-31 17:59:16 -05:00
doc	Adjust back-branch release note description of commits `a2a718b22` et al.	2016-01-02 15:29:03 -05:00
src	Fix treatment of *lpNumberOfBytesRecvd == 0: that's a completion condition.	2016-01-03 13:56:29 -05:00
.dir-locals.el	emacs: Set indent-tabs-mode in perl-mode	2015-04-12 23:53:23 -04:00
.gitattributes	Add functions for dealing with PGP armor header lines to pgcrypto.	2014-10-01 16:03:39 +03:00
.gitignore	Improve speed of make check-world	2015-04-23 08:59:52 -04:00
aclocal.m4	Revert changes to pthread configure tests on REL9_5_STABLE.	2015-07-09 10:59:10 +03:00
configure	Cope with Readline's failure to track SIGWINCH events outside of input.	2015-12-16 16:58:55 -05:00
configure.in	Cope with Readline's failure to track SIGWINCH events outside of input.	2015-12-16 16:58:55 -05:00
COPYRIGHT	Update copyright for 2016	2016-01-02 13:33:39 -05:00
GNUmakefile.in	Fix distclean/maintainer-clean targets to remove top-level tmp_install dir.	2015-05-13 18:48:05 -04:00
HISTORY	Improve text of stub HISTORY file.	2014-02-12 18:16:17 -05:00
Makefile	Allow make check in PL directories	2011-02-15 06:52:12 +02:00
README	Don't generate plain-text HISTORY and src/test/regress/README anymore.	2014-02-10 20:48:04 -05:00
README.git	Don't generate plain-text HISTORY and src/test/regress/README anymore.	2014-02-10 20:48:04 -05:00

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.  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/.