Windows specific: MS C++ versus D thread local variables

[Gregor Mückl]

On Monday, 28 November 2022 at 18:51:37 UTC, NonNull wrote:
> I tested this with D threads and it works for my test program. 
> I might guess that this is so in general, because such a 
> library has to successfully work with arbitrary MS VC++ and 
> that "interop" is defined by MS to work.

I worked on products where native C++ threads were calling 
complex CLR code and we never had an issue with the CLR runtime 
in these scenarios. As far as I recall the .Net documentation, 
this is entirely supported. I believe that the shim code handling 
the transitions behind the scenes takes care of that. If you want 
to know how it works in detail, I guess you have to dig into the 
runtime sources. They are complex and hard to understand, though.