RFR: 8324649: Shenandoah: refactor implementation of free set [v4]

[Kelvin Nilsen]

On Wed, 31 Jan 2024 17:33:17 GMT, Y. Srinivas Ramakrishna <ysr at openjdk.org> wrote:

>> The problem happens when leftmost is zero.  If we decrement idx beyond zero, we would get MAXINT rather than -1, so the test that idx >= leftmost is always true and loop never terminates...  I think I discovered this the hard way... :(
>
> `ssize_t` is signed, unlike `size_t` which is unsigned.

Thanks for clarifying.  I did know ssize_t.  I'm adjusting the code.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17561#discussion_r1477069379