Integrated: 8328679: Improve comment for UNSAFE_ENTRY_SCOPED in unsafe.cpp

[Maurizio Cimadamore]

On Thu, 21 Mar 2024 11:04:41 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

> This small PR is an attempt at improving the comment in the UNSAFE_ENTRY_SCOPED macro.
> I found that the comment contained some duplicated claims, did not properly introduced the concepts it referred to, and some of its claims were not explained in full.
> 
> As this is a delicate part of how FFM ensures the "no use after free" guarantee, I think it would be a good idea for this comment to better reflect what the expectations are.

This pull request has now been integrated.

Changeset: 709410d8
Author:    Maurizio Cimadamore <mcimadamore at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/709410d8a4ca176c52d9c0abf80ed59eeb6bdaf3
Stats:     20 lines in 1 file changed: 3 ins; 2 del; 15 mod

8328679: Improve comment for UNSAFE_ENTRY_SCOPED in unsafe.cpp

Reviewed-by: jvernee, dholmes

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PR: https://git.openjdk.org/jdk/pull/18429