RFR: 8277072: ObjectStreamClass caches keep ClassLoaders alive [v5]

[Roman Kennke]

On Thu, 2 Dec 2021 16:14:18 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Implement ClassCache: reclaim entries under memory pressure
>
> ObjectStreamClass may have an unnecesary import of `SoftReference`.
> 
> Otherwise, looks good to me.

Thanks, @RogerRiggs!
@plevart does that also look reasonable to you?

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PR: https://git.openjdk.java.net/jdk/pull/6375