[python-win32] Extension and local data on win32
Mon, 11 Nov 2002 15:07:28 -0600
At 04:03 PM 11/11/2002 -0500, Jorgensen, Jens wrote:
>How interesting. You say that you're linking in the C library into each
>.dll. Is your C library a static or shared lib? If it is a static lib then
>the problem is apparent: each .dll gets a copy of that C library and thus
>its own copy of the static-scoped type objects.
Yes, it is a static library (dll version is not supported).
>If this is the case then you'll have to restrict creation of these structs
>to just one of the .dlls to make this work.
Hrm. It's fairly unclear how to make that happen; I suspect I'd have to
break the library in two and just link the structure defs by themselves. (ugh).
>If the C library is a shared lib (.dll) itself then this is interesting. I
>guess this would mean that each time the .dll is loaded the OS makes a new
>copy of the data part of the image? I wouldn't think this would be the
>case. I don't think Q109619 is what you want since this talks about
>sharing data in a .dll among all processes and in your case this is all
>within the same process.
Ah, right. That'd explain why it didn't work :-). I still hold out some
hope that by subtle manipulation of the compiler or runtime we can make
this happen without hacking the library ...
thanks for the help,