When might a CodeBuffer be moved?

[Tom Rodriguez]

CodeBlobs are never moved automatically by anything.  CodeBuffers have  
support for resizing the code generation buffer by moving the  
instructions from one CodeBlob to a new larger one but you have to ask  
for that using maybe_expand_to_ensure_remaining.  nmethod can be  
reclaimed by the sweeper once they are no longer referenced as a  
result of being made not entrant or zombie.

tom

On Jun 10, 2009, at 6:55 AM, Gary Benson wrote:

> Hi all,
>
> I know CodeBuffers aren't moved by the garbage collector, but can they
> move at all?  I remember someone (Steve Goldman?) telling me about a
> code compactor once, but can't remember the details.  Can a code
> buffer move at any safepoint?
>
> Cheers,
> Gary
>
> -- 
> http://gbenson.net/