RFR (S): CR 8012939: @Contended doesn't work correctly with inheritance

[Aleksey Shipilev]

Friendly reminder.

-Aleksey.

On 04/29/2013 02:53 PM, Aleksey Shipilev wrote:
> Hi,
> 
> This is the fix for the bug found during SQE testing:
>    http://cr.openjdk.java.net/~shade/8012939/webrev.00/
> 
> The essence of the bug is that the padding in the superclass may be
> disregarded by the subclasses due to mishap in the instance size
> calculation. This is the corner case, and we don't know whether anybody
> had been burned on this yet.
> 
> The patch fixes up the instance size handling, as well as prunes the
> source of the original error (reusing next_nonstatic_type_offset was
> confusing).
> 
> Testing:
>   - full JPRT cycle
>   - adhoc testing with Linux x86_64/fastdebug and Test8012939
> 
> -Aleksey.
>