On Thu, 24 Oct 2024 20:41:46 GMT, Doug Lea <[email protected]> wrote:
>> This addresses tendencies in previous update to increase fencing, scanning,
>> and signalling that can increase contention, and slow down performance
>> especially on ARM platforms. It also uses more ARM-friendly constructions to
>> reduce overhead (leading to several changes that all of the same form),
>
> Doug Lea has updated the pull request incrementally with one additional
> commit since the last revision:
>
> For starvation check #2
src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 1272:
> 1270: int s = top, b = base, m, cap, room; ForkJoinTask<?>[] a;
> 1271: if ((a = array) != null && (cap = a.length) > 0 &&
> 1272: task != null) { // else
> disabled
Can `task` ever be null here? or is this check just to avoid subsequent
implicit nullchecks?
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PR Review Comment: https://git.openjdk.org/jdk/pull/21507#discussion_r1816581681
