Vote on region allocator

[dsimcha]

On 9/23/2011 11:25 PM, Robert Jacques wrote:
> On Fri, 23 Sep 2011 15:53:46 -0400, Jonathan M Davis
> <jmdavisProg at gmx.com> wrote:
>
> No. I cannot build an efficient and safe appender on this API.

The resize() fix you requested is going to get implemented.  I just 
haven't actually added it yet.  The allocate() fix with block 
attributes, however, is not because:

1.  You can just call addRegion/removeRegion yourself after allocating, 
so it just adds bloat.

2.  A major purpose of RegionAllocator and probably several other 
allocators is to avoid the GC lock.  I don't want anything that could 
lock to be implicit unless the only alternative is failure.