Integrated: 8369178: G1: Use NMethodMarkingScope and ThreadsClaimTokenScope in G1RootProcessor

[Francesco Andreuzzi]

On Mon, 6 Oct 2025 12:20:42 GMT, Francesco Andreuzzi <fandreuzzi at openjdk.org> wrote:

> Replace `StrongRootsScope` with `ThreadsClaimTokenScope` and `MarkingNMethodClosure` in `G1RootProcessor ` to be more precise with what is needed and why.
> 
> - `MarkingNMethodClosure` is used in `G1FullGCMarkTask`, so we also need `NMethodMarkingScope`.
> - `active_workers ` is guaranteed to be `> 0`
> 
> Passes tier1 and tier2 (fastdebug).

This pull request has now been integrated.

Changeset: 927aa3f8
Author:    Francesco Andreuzzi <fandreuzzi at openjdk.org>
Committer: Thomas Schatzl <tschatzl at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/927aa3f8da34fb71b692661bebb89d20bfa85648
Stats:     53 lines in 8 files changed: 7 ins; 39 del; 7 mod

8369178: G1: Use NMethodMarkingScope and ThreadsClaimTokenScope in G1RootProcessor

Reviewed-by: ayang, tschatzl

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PR: https://git.openjdk.org/jdk/pull/27644