[jdk17u] RFR: 8276205: Shenandoah: CodeCache_lock should always be held for initializing code cache iteration

[Zhengyu Gu]

On Wed, 17 Nov 2021 14:01:23 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> So the "context" difference is that JDK 17u does not have JDK-8273300, which removed `CodeCache_lock` from `ShenandoahCodeRootsIterator`? If so, looks fine.

Yes.

Thanks for the review, @shipilev

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PR: https://git.openjdk.java.net/jdk17u/pull/262