On Tue, 21 Nov 2023 17:12:39 GMT, Doug Lea <d...@openjdk.org> wrote:
>> This update cascades timeouts to trim subsequent workers after the first
>> keepAlive inactive period.
>
> Doug Lea has updated the pull request with a new target base due to a merge
> or a rebase. The incremental webrev excludes the unrelated changes brought in
> by the merge/rebase. The pull request contains three additional commits since
> the last revision:
>
> - Merge branch 'openjdk:master' into JDK-8319662
> - tweak cascades; reinstate an @Contended; resolve JDK-8319498
> - Support cascading idle timeouts
src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 2013:
> 2011: else if ((e & SHUTDOWN) == 0)
> 2012: return true;
> 2013: else if (compareAndSetCtl(c, c) && casRunState(e, e |
> STOP)) {
Is this `compareAndSetCtl(c, c)` really needed? Wouldn't a volatile get on
`ctl` compared with `c` be enough? (Or are we relying on a store-barrier in the
successful case? 🤔
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PR Review Comment: https://git.openjdk.org/jdk/pull/16725#discussion_r1403218297
