Re: DestroyWindow exception on AMD

From:

"Alexander Grigoriev" <alegr@earthlink.net>

Newsgroups:

microsoft.public.vc.mfc

Date:

Wed, 30 Aug 2006 21:48:09 -0700

Message-ID:

<#zEuoiLzGHA.4104@TK2MSFTNGP02.phx.gbl>

I'm afraid it's not the right solution. You didn't say you actually fixed
your threads shutdown.

Anyway, you should rather have the system handle SC_CLOSE, it will post
WM_CLOSE to the window. You should handle shutdown in WM_CLOSE.

I would also recommend to avoid window creation in secondary threads. That
gives you too much PITA.

"WRH" <nospam@videotron.ca> wrote in message
news:%23bdIfeEzGHA.5072@TK2MSFTNGP03.phx.gbl...

Problem solved!

Thanks to Joe's (Joseph M. Newcomer ) MVP web site
("surviving the release version") I was able to get some
debug info which prompted me to make a trivial code
change.

Here's a snippet of my relevant code....

//------------------------------------------------------------

void CWhwin::OnSysCommand( WPARAM nID, LPARAM lParam )
{

int id = nID & 0xfff0;

if(id == SC_CLOSE)
{

wh_shutdown();// contains the DestroyWindow call
return;

}//if id == SC_CLOSE

//Crashed in this next line on AMD dual core PC

if(id == SC_MAXIMIZE || id == SC_SIZE || id == SC_RESTORE)
{
...

//------------------------------------------------------------

On non-dual core systems, it never got to this line after
DestroyWindows

The fix was to set a flag in wh_shutdown and exit OnSysCommand
if set, ie

void CWhwin::OnSysCommand( WPARAM nID, LPARAM lParam )
{

if (shuttingdown)
return;

int id = nID & 0xfff0;

"WRH" <nospam@videotron.ca> wrote in message
news:eWC63AwyGHA.1268@TK2MSFTNGP02.phx.gbl...

Hello
I have an app that I wrote and have used for many years.
I override OnSysCommand SC_CLOSE and do my own
cleanup before doing DestroyWindow. This app worked
well on Windows 95/98/NT/2000/2003 and with XP
running on a Pentium P4. With XP on an AMD Athlon X2,
however, DestroyWindow throws an unhandled exception
at 0x0000000000e0e0e0e...but not always.
I can work around it with ExitProcess but just wondering
if anyone had similar experiences with AMD vs Intel.

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