RFR: Fix ShenandoahHeapRegion initialization

[Roman Kennke]

Am Mittwoch, den 01.02.2017, 16:52 +0100 schrieb Aleksey Shipilev:
> On 02/01/2017 04:47 PM, Roman Kennke wrote:
> > Aleksey found out that ShenandoahHeapRegion::_critical_pins is
> > never
> > initialized. I had a look and there are also some other fields in
> > ShenandoahHeapRegion uninitialized... we seem to be lucky that the
> > OS
> > zeroes memory for us, and no other allocations interfered with us.
> > Don't like to rely on luck though, so here's the fix:
> > 
> > http://cr.openjdk.java.net/~rkennke/fixhr/webrev.00/
> 
> Should probably start with _recycled(true) to match whatever
> recycle() is doing.
> Otherwise looks good.

Right. Pushed with _recycled(true).


Roman