I attached the diff, seems to fix the problem, at least I tested consective 1,000 times shutdown, and no problem. not sure if there are other side effects, though.
--- On Mon, 7/26/10, Huihong Luo <huisi...@yahoo.com> wrote:
From: Huihong Luo <huisi...@yahoo.com>
Subject: Re: [vbox-dev] possible cause for the crash when shutting down a vm
To: vbox-dev@virtualbox.org
Date: Monday, July 26, 2010, 10:27 PM
more importantly, when WM_VBOX_RENDERSPU_DESTROY_WINDOW is received, should
the while loop break out? that loop will definitely causes problems after dll
is unloaded.
--- On Mon, 7/26/10, Huihong Luo <huisi...@yahoo.com> wrote:
From: Huihong Luo <huisi...@yahoo.com>
Subject: [vbox-dev] possible cause for the crash when shutting down a vm
To: vbox-dev@virtualbox.org
Date: Monday, July 26, 2010, 10:04 PM
I continue to debug the crash bug when shutting down a vm on windows host.
The crash indicated that some code is still being executed after a dll is
unloaded.
After some extensive debugging, I found the following function might be
problematic. Can you guys double check?
When WM_VBOX_RENDERSPU_DESTROY_WINDOW is received, it immediately invokes
SetEvent(render_spu.hWinThreadReadyEvent), should that statement be commented
out? and leave the last one.
static DWORD WINAPI renderSPUWindowThreadProc(void* unused)
{
...
else
{
...
else if (msg.message == WM_VBOX_RENDERSPU_DESTROY_WINDOW)
{
CRASSERT(msg.lParam && !msg.wParam);
DestroyWindow(((VBOX_RENDERSPU_DESTROY_WINDOW*) msg.lParam)->hWnd);
SetEvent(render_spu.hWinThreadReadyEvent);
}
else
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}
render_spu.dwWinThreadId = 0;
crDebug("RenderSPU: Window thread stopped (%x)", crThreadID());
SetEvent(render_spu.hWinThreadReadyEvent);
return 0;
}
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