RFA 8056249 Improve CompletableFuture resource usage

[Rob McKenna]

Approved.

     -Rob

P.S. http://openjdk.java.net/projects/jdk8u/approval-template.html

On 04/09/14 12:57, Paul Sandoz wrote:
> Hi,
>
> I would like to backport the improvements of CompletableFuture from 9 to 8u40:
>
>    http://mail.openjdk.java.net/pipermail/core-libs-dev/2014-August/028418.html
>
>    https://bugs.openjdk.java.net/browse/JDK-8056249
>    
>    http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8056249-cf-resource-usage/webrev/
>
>    http://hg.openjdk.java.net/jdk9/dev/jdk/rev/68a6bb51cb26
>
> The changeset (when shuffled) imports cleanly into jdk8u-dev/jdk.
>
> This fix exposed an issue with some JCK tests relying on implementation behaviour that changed [*]. JCK 8a has been updated accordingly.
>
> Paul.
>
> [*] Regarding a stage that is dependent of either of two other stages and one completes exceptionally. On CompletionStage:
>
>   * to either one of these exceptions.  If a stage is dependent on
>   * <em>either</em> of two others, and only one of them completes
>   * exceptionally, no guarantees are made about whether the dependent
>   * stage completes normally or exceptionally. In the case of method
>