RFR: 8318720: G1: Memory leak in G1CodeRootSet after JDK-8315503 [v3]

[Zhengyu Gu]

On Wed, 25 Oct 2023 14:51:06 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> I would strongly prefer something like [this](https://github.com/openjdk/jdk/commit/521b66294bc22e7c0760c60e7ce2f1ce31347fc3) after some "worrying about the refactoring" ;)
>> Passes gc/g1 testing.
>
> It's small enough to copy it in here:
> 
>   void clear() {
>     // Remove all entries.
>     auto always_true = [] (nmethod** value) {
>                          return true;
>                        };
> 
>     clean(always_true);
>   }

Ah, I was confused by `_table.clean()` and could not find `clean()` in CHT. Updated.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16352#discussion_r1371930031