Does Delphi threadvar work for Parallel.For?

Question

from here it says

"The ThreadVar keyword starts a set of variable definitions that are used by threads. Each thread is given a separate instance of each variable, thereby avoiding data conflicts, and preserving thread independence. "

So can I use in Parallel.For like this?

threadvar
    threadID: integer;

procedure TForm5.Button1Click(Sender: TObject);
var
 Tot: Integer;
begin
 TParallel.For(1, Max, procedure (I: Integer)
   begin
     threadID := i;  // each thread gets its own threadID?
     if IsPrime (threadID) then
       TInterlocked.Increment (Tot);
   end);
end;

Answer 1

You can certainly use threadvar with PPL code. Internally the PPL code stands on top of the system threading libraries, and so threadvar works as you would expect.