RFR: 8321401: Shenandoah: Each mutator must see FullGC before throwing OOM

[Y. Srinivas Ramakrishna]

On Tue, 5 Dec 2023 20:30:54 GMT, Kelvin Nilsen <kdnilsen at openjdk.org> wrote:

> Require each thread to observe unproductive Full GC before it throws OOM exception.

src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp line 885:

> 883:     // This will notify the collector to start a cycle, but will raise
> 884:     // an OOME to the mutator if the last Full GCs have not made progress.
> 885:     if (result == nullptr && !req.is_lab_alloc() && get_gc_no_progress_count() > ShenandoahNoProgressThreshold) {

Does this render `ShenandoahNoProgressThreshold` a dead option?

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PR Review Comment: https://git.openjdk.org/jdk/pull/16985#discussion_r1416398792