RFR: 8292375: Convert ProtectionDomainCacheTable to ResourceHashtable [v5]

[Coleen Phillimore]

On Tue, 30 Aug 2022 19:31:00 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Please review this simple conversion for the ProtectionDomainCacheTable from Old Hashtable to ResourceHashtable.  There are specific tests for this table in test/hotspot/jtreg/runtime/Dictionary and serviceability/dcmd/vm/DictionaryStatsTest.java.
>> Also tested with tier1-7.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add comment about key,value.

Thank you for reviewing, Ioi.

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PR: https://git.openjdk.org/jdk/pull/10043