On Tue, 18 Nov 2025 22:27:46 GMT, Doug Lea <[email protected]> wrote:
>> This set of updates reduces contention-based performance loss under heavy
>> over-subscription, while also improving perfomance more generally.
>
> Doug Lea has updated the pull request incrementally with one additional
> commit since the last revision:
>
> Tweaks
src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 1261:
> 1259: if ((a = array) != null && (cap = a.length) > 0) { // else
> disabled
> 1260: int k = (m = cap - 1) & s;
> 1261: if ((room = m - (s - b)) >= 0) {
Not that I think it'd make much of a difference, but it would be possible to do
the following:
Suggestion:
int k;
if ((room = (k = (m = cap - 1) & s) - (s - b)) >= 0) {
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PR Review Comment: https://git.openjdk.org/jdk/pull/26479#discussion_r2546508029
