RFR: 8280106: G1: Make reclaiming memory functionality more general in G1SegmentedArrayFreePool and G1SegmentedArrayFreeMemoryTask

[Hamlin Li]

On Thu, 10 Feb 2022 08:14:41 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

> > Currently, Configuration is only used to get the number of object types. Do you suggest to use a const template parameter (e.g. template<MEMFLAGS flag, int NUM> class G1SegmentedArrayFreeMemoryTask) to replace the Configuration parameter? I don't object, but seems a Configuration parameter make it more clear to differentiate between 2 G1SegmentedArrayFreeMemoryTask even if they has the same number of object types. Please kindly let me know you suggestion.
> 
> Just seemed like overkill to use a template parameter, const template parameter does not solve that. If there is not work around that doesn't involve a new template parameter, then the Configuration is better because we might use it for more in the future. I was just wondering if we can pass the number of object types in constructor rather than template parameter.

So, do you agree to go with a Configuration as the template parameter?
( Sorry, I missed another use of Configuration which is Configuration::mem_object_type_name_str(i). )

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PR: https://git.openjdk.java.net/jdk/pull/7121