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Date: Thu, 6 May 2004 12:36:42 -0400
From: Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: pthreads and sockets - Cannot register window class error
Message-ID: <20040506163642.GF27589@coe.bosbc.com>
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On Thu, May 06, 2004 at 11:13:43AM -0500, Brian Ford wrote:
>On Thu, 6 May 2004, Jacek Trzmiel wrote:
>
>> Nevertheless ThreadingTest.cpp posted here:
>>
>> http://cygwin.com/ml/cygwin/2004-05/msg00178.html
>>
>> still sometimes fails, even with 20040504 snapshot:
>>
>> > $ g++ ThreadingTest.cpp -lpthread -o ThreadingTest.exe && ./ThreadingTest.exe
>> >     238 [win] ThreadingTest 1696 Winmain: Cannot register window class, Win32 error 1410
>> >     896 [win] ThreadingTest 1696 Winmain: Cannot register window class, Win32 error 1410
>
>It's an obvious race condition in winsup/cygwin/window.cc (gethwnd):
>ourhwnd.  I'm not quite sure how to fix it yet, and I've got to do real
>work now.  So, have at it :-).

This code has needed a complete rewrite for sometime.  Its use of static
buffers makes it a guaranteed race-full zone.

cgf

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