RFR: 8191861: Move and refactor hSpaceCounters

[Stefan Karlsson]

Thanks, Roman!

StefanK

On 2017-11-24 15:11, Roman Kennke wrote:
> Looks good to me too.
> 
> This is welcome because it's one oft the parts that Shenandoah uses from G1.
> 
> Thanks, Roman
> 
> 
> Am 24. November 2017 14:38:38 MEZ schrieb Stefan Karlsson 
> <stefan.karlsson at oracle.com>:
> 
>     Hi all,
> 
>     Please review this patch to move and refactor HSpaceCounters.
> 
>     http://cr.openjdk.java.net/~stefank/8191861/webrev.01
>     https://bugs.openjdk.java.net/browse/JDK-8191861
> 
>     The patch moves hSpaceCounters.hpp/cpp out from gc/g1 into gc/shared, so
>     that it can be reused by other GCs.
> 
>     The patch also removes the dependency between HSpaceCounters and
>     GenerationCounters. The passed in GenerationCounters object was only
>     used to provide the name_space of the perf counter. This patch changes
>     G1 to explicitly pass in the name_space string instead of the
>     GenerationCounters.
> 
>     This patch builds upon these two patches:
>       
>     http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-November/029267.html
>       
>     http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-November/029268.html
> 
>     Thanks,
>     StefanK
> 
> 
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