Garbage collection progress delegate

[Frank Benoit]

Craig Black schrieb:
>> The main problem is the moving reference. Without that problem, it would
>> be much easier to make a concurrent gc not interrupting the program.
> 
> I don't know a lot about GC.  What is the moving reference?
> 
> -Craig 
> 
> 

- start of gc collecting cycle
- gc scans refb, which is null
- gc calls your delegate
- in your delegate refb = refa; refa = null;
- your delegate ends, gc continues ('thinking' refb is null)
- scans refa, which is now null also
-> GC: Oh, no ref to obj, I can free it!