RFR (XS): 8054808: Bitmap verification sometimes fails after Full GC aborts concurrent mark

Thomas Schatzl thomas.schatzl at oracle.com
Thu Aug 28 08:34:09 UTC 2014

Hi Bengt and Jon,

  thanks for the reviews :)

On Thu, 2014-08-28 at 10:02 +0200, Bengt Rutisson wrote:
> Hi Thomas,
> (Had an offline discussion with Thomas about this. Replying here for the 
> record.)
> The proposed fix works fine but there is a slightly simpler solution. 
> For all HeapRegions we store the original end value in a variable that 
> does not change. We could use that for this fix instead of having to 
> calculate the end value.
> Something like:
> HeapWord* end = r->orig_end();
> return _bitmap->getNextMarkedWordAddress(r->bottom(), end) != end;

New webrev implementing this at


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