RFR: 8255883: Avoid duplicated GeneratedMethodAccessor when reflect method invoked from different threads [v6]

[Hui Shi]

On Sun, 15 Nov 2020 07:25:30 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> After review PR/commit title is changed to align with JBS title to add ready label
>
> Can you sync up your branch (the bot is saying that it's 140 commits behind the main line)? I can sponsor once it has been tested with an up to date branch.

@AlanBateman Thanks for your sponsoring! Commit is updated.

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PR: https://git.openjdk.java.net/jdk/pull/1070