RFR: 8291065: Creating a VarHandle for a static field triggers class initialization [v5]

[Chen Liang]

On Wed, 7 Jun 2023 20:26:47 GMT, Paul Sandoz <psandoz at openjdk.org> wrote:

> Change only the static field var handle implementations to call `target()`, since it is unnecessary on the others.

Unfortunately, I don't think there is a convenient way for VH implementations to easily unwrap the correct VH; a `target()` call is more convenient than an extra instanceof check and cast and get.

> I am wondering if the simplest approach in `initialize` is to set the `methodHandleTable` to null?

I update the entries in the table because they are already created and potentially live on the heap or stack. Those entries should benefit from the post-initialization performance benefits as well.

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PR Comment: https://git.openjdk.org/jdk/pull/13821#issuecomment-1581603143