RFR: Generation resizing

[William Kemper]

On Mon, 5 Dec 2022 11:10:54 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

>> These changes have the generational mode track the minimum mutator utilization (percentage of process time used by mutators). When it falls below a configuration percentage (GCTimeRatio), a heuristic will transfer memory capacity to whatever generation has been using more CPU time. The assumption here is that by increasing capacity, we will decrease the collection frequency and improve the MMU.
>
> src/hotspot/share/gc/shenandoah/shenandoahMmuTracker.cpp line 25:
> 
>> 23:  */
>> 24: 
>> 25: #include "gc/shenandoah/shenandoahMmuTracker.hpp"
> 
> You need to include precompiled.hpp here.

Done (added this to my new file template as well).

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PR: https://git.openjdk.org/shenandoah/pull/177