RFR: 8342486: Implement JEP 505: Structured Concurrency (Fifth Preview) [v8]

[Alan Bateman]

On Tue, 15 Apr 2025 21:45:10 GMT, Viktor Klang <vklang at openjdk.org> wrote:

>> Alan Bateman has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 15 commits:
>> 
>>  - Add JEP number, update copyright headers
>>  - Merge branch 'master' into JDK-8342486
>>  - Sync up from loom repo
>>  - Merge branch 'master' into JDK-8342486
>>  - Sync up from loom repo
>>  - Merge branch 'master' into JDK-8342486
>>  - Merge branch 'master' into JDK-8342486
>>  - Fix link
>>  - Merge branch 'master' into JDK-8342486
>>  - Sync up impl/tests form loom repo
>>  - ... and 5 more: https://git.openjdk.org/jdk/compare/3090e218...418bc3d3
>
> test/jdk/java/util/concurrent/StructuredTaskScope/StructuredTaskScopeTest.java line 977:
> 
>> 975:             scope.fork(() -> "foo");
>> 976:             while (!scope.isCancelled()) {
>> 977:                 Thread.sleep(10);
> 
> Might make sense to create a utility method to "awaitAndAssertCancel" since this location has a 10ms sleep but others have a 20ms sleep. (To ensure that it is handled uniformly)

That's a good suggestion, an awaitCancelled would avoid having this while loop in a number of tests.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21934#discussion_r2046150243