Hi Marcus,
On Fri, 2005-03-04 at 14:52 +0100, Marcus Lindblom wrote:
> Hi,
>
> We're trying to use OpenSG from Java in Windows, succeeding somewhat
> (OpenSGCanvas anyone? ;),
sounds pretty neat! Any plans of making it OS when it's done?
> but have found that it's quite picky about
> it's threads.
True.
> Mainly, it seems to be assumed that all threads are created by opensg's
> thread manager, and there seem to be no detection if opensg is executing
> in a thread which does not have any local storage yet (i.e. change
> list),
We thought about it, but decided against it, as this is one of the most
performance-critical parts of OpenSG, so we wanted to avoid overhead
here.
> This would not be a big problem, since I've managed to derive from
> ExternalThread and call intialize() to set an aspect to use for threads
> created in java, so initialization and rendering works just fine.
OK.
> However, during exit, when the process dies, the C-runtime system
> deletes all global/class-static data in the OpenSG-dll, and this seem to
> be done in a thread which has not been initialized (and does not go
> through any of my code).
ARGL. Don't you just love Windows?
> I suppose the solution would be to correctly handle the
> DLL_THREAD_ATTACH and DLL_THREAD_DETACH in the DllMain() function of
> each DLL. This would allow OpenSG to initialize its thread-local data
> for all threads being called (either defaulting to one aspect, or using
> some dummy null-aspect, or something). Also, thread detaching would
> correctly. However, I have only some experience with DLL's and threading
> in windows (or at all), so there may be a better way to solve this.
>
> Is this something someone has thought about, had experience with or
> solved already, I'd be very grateful to hear what you have to say.
Sorry, have to pass here. I only use Windows under thread of force, and
so far nobody's forced me to look into that. Anybody else?
Dirk
--
Dirk Reiners <[EMAIL PROTECTED]>
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