RFR(xs): 8073115: assert(_covered_region.contains(p)) needs better error messages

[Stefan Karlsson]

Hi Sangheon,

On 2015-02-13 07:54, Sangheon Kim wrote:
> Hi All,
>
> Please review this small enhancement for better error messages when assert fails.
> This change would be helpful forJDK-8071930  <https://bugs.openjdk.java.net/browse/JDK-8071930>  which is hard to reproduce.
>
> I will need a sponsor for this change.
>
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8073115
>
> Webrev:
> http://cr.openjdk.java.net/~sangheki/8073115/webrev.00/

http://cr.openjdk.java.net/~sangheki/8073115/webrev.00/src/share/vm/gc_implementation/parallelScavenge/objectStartArray.hpp.udiff.html

You are duplicating the same assert three times. Could you create a new 
define, say #define assert_covered_region_contains(addr) ..., and remove 
the duplication? This will also have the benefit of lowering the line 
noise in the functions you change.

Thanks,
StefanK

>
> Testing:
> JPRT
>
> Thanks,
> Sangheon

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