Re: libpq WSACleanup is not needed

From: Andrew Chernow <ac(at)esilo(dot)com>
To: Jeroen Vermeulen <jtv(at)xs4all(dot)nl>
Cc: Merlin Moncure <mmoncure(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: libpq WSACleanup is not needed
Date: 2009-01-20 16:26:08
Message-ID: 4975FB20.30505@esilo.com
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Jeroen Vermeulen wrote:
>
> Would there be any serious harm in:
>
> 1. doing the WSAStartup() when the first connection is opened, but
>

The only problem is how to detect the first connection. In a threaded
environment you'd have to perform locking in connectdb, which is
probably not going to fly.

>>but does it say something similar about shutdown?

From the WSACleanup docs:

"The WSACleanup function typically leads to protocol-specific helper
DLLs being unloaded. As a result, the WSACleanup function should not be
called from the DllMain function in a application DLL. This can
potentially cause deadlocks"

--
Andrew Chernow
eSilo, LLC
every bit counts
http://www.esilo.com/

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