RFR: 8284161: Implementation of Virtual Threads (Preview) [v8]

[Paul Sandoz]

On Wed, 27 Apr 2022 17:27:56 GMT, Mandy Chung <mchung at openjdk.org> wrote:

>> Alan Bateman has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Refresh 7965cc6b168e567ac2596f2fbc3b00a7d99b7e1e
>
> src/java.base/share/classes/java/lang/PinnedThreadPrinter.java line 58:
> 
>> 56: 
>> 57:     // maps a class to the hashes of stack traces pinned by that code in that class
>> 58:     private static final Map<Class<?>, Hashes> classToHashes = new WeakHashMap<>();
> 
> Can you use `ClassValue` in this case?

I was wondering that too, but held off commenting since it's not super performance critical given `classToHashes` is synchronized on. However, it does make the code a little clearer.

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PR: https://git.openjdk.java.net/jdk/pull/8166