D and parallel programming

[Regan Heath]

Sean Kelly wrote:
> Support for multithreaded programming (what I assume you meant by 
> "parallel programming") in D largely amounts to a standard Thread object 
> in the library, as well as a "synchronized" keyword which behaves quite 
> similar to the one in Java.  

Except that (importantly, IMO) it's re-entrant.
By that I mean, if you have:

class Foo
{
   int i;

   void bar()
   {
     synchronized(this)
     {
       i++;
     }
   }
}

void main()
{
   Foo f = new Foo();
   synchronized(f)
   {
     f.bar();
   }
}

you get no deadlock.  As I believe they do in Java (someone correct me 
if I'm wrong).

In short, multiple synchronized blocks, on the same object, in the same 
thread are allowed and do not cause a deadlock.

Anyone know what the C# behaviour is in this case?

Regan