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Tom Lane a099482c86 Expect EWOULDBLOCK from a non-blocking connect() call only on Windows. 
On Unix-ish platforms, EWOULDBLOCK may be the same as EAGAIN, which is
*not* a success return, at least not on Linux.  We need to treat it as a
failure to avoid giving a misleading error message.  Per the Single Unix
Spec, only EINPROGRESS and EINTR returns indicate that the connection
attempt is in progress.

On Windows, on the other hand, EWOULDBLOCK (WSAEWOULDBLOCK) is the expected
case.  We must accept EINPROGRESS as well because Cygwin will return that,
and it doesn't seem worth distinguishing Cygwin from native Windows here.
It's not very clear whether EINTR can occur on Windows, but let's leave
that part of the logic alone in the absence of concrete trouble reports.

Also, remove the test for errno == 0, effectively reverting commit
da9501bddb, which AFAICS was just a thinko;
or at best it might have been a workaround for a platform-specific bug,
which we can hope is gone now thirteen years later.  In any case, since
libpq makes no effort to reset errno to zero before calling connect(),
it seems unlikely that that test has ever reliably done anything useful.

Andres Freund and Tom Lane
 		2013-06-27 12:36:44 -04:00
config Be consistent about #define'ing configure symbols as "1" not empty. 2013-06-15 14:11:43 -04:00
contrib pgbench: Fix inadvertent inconsistency in help message. 2013-06-27 10:33:04 -04:00
doc Fixed incorrect description of EXEC SQL VAR command. 2013-06-27 17:07:03 +02:00
src Expect EWOULDBLOCK from a non-blocking connect() call only on Windows. 2013-06-27 12:36:44 -04:00
.gitignore Add pkg-config files for libpq and ecpg libraries 2013-03-31 16:58:40 -04:00
COPYRIGHT Update copyrights for 2013 2013-01-01 17:15:01 -05:00
GNUmakefile.in Make init-po and update-po recursive make targets 2012-06-29 14:01:54 +03:00
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
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Be consistent about #define'ing configure symbols as "1" not empty. 2013-06-15 14:11:43 -04:00
configure.in Be consistent about #define'ing configure symbols as "1" not empty. 2013-06-15 14:11:43 -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/.