Some performance notes

[Rob Gayvert]

Andreas Raab wrote:

> Rob -
>
>> I do a fair amount of work with cygwin and gcc as well, so I'm not 
>> partial to any particular tool; I just happened to start with MSVC. 
>> But after seeing these numbers, I'll definitely have to switch over 
>> to a gcc build.
>
> Don't get spoiled. There is no reason why you would have to compile a 
> *plugin* with GCC (unless you like it). If I remember our last 
> conversation correctly, then there wasn't any intrinsic need for a VM 
> modification (is this still correct?) so you might be better off with 
> an external plugin (compiled with whatever) and the stock VM.

Good point, and I'd certainly like to get it all into an external 
plugin. I was able to move some startup and shutdown code into the 
plugin as you suggested a few months ago, but there is still one small 
change that is necessary for wxSqueak. In sqWin32Window.c, the function 
ioProcessEvents calls

    while(PeekMessage(&msg,0,0,0,PM_NOREMOVE)) {
        GetMessage(&msg,0,0,0);

For wxSqueak this needs to be

    while(PeekMessage(&msg,stWindow,0,0,PM_NOREMOVE))
       GetMessage(&msg,stWindow,0,0);

so that the events to non-Squeak windows are not consumed here. Do you 
think we could find a way to work in a fix for this in the stock VM?