[crac] RFR: Improved open file descriptors tracking [v10]

[Anton Kozlov]

On Wed, 10 May 2023 16:06:45 GMT, Radim Vansa <duke at openjdk.org> wrote:

>> Tracks `java.io.FileDescriptor` instances as CRaC resource; before checkpoint these are reported and if not allow-listed (e.g. as opened as standard descriptors) an exception is thrown. Further investigation can use system property `jdk.crac.collect-fd-stacktraces=true` to record origin of those file descriptors.
>> File descriptors claimed in Java code are passed to native; native code checks all open file descriptors and reports error if there's an unexpected FD that is not included in the list passed previously.
>
> Radim Vansa has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 51 commits:
> 
>  - Merge remote-tracking branch 'origin/crac' into newfd
>  - Fixup
>  - Merge branch 'context_order' into newfd
>  - Revert removing the logging configuration
>  - Make comparator private
>  - Fix build
>  - Minified the set of changes
>  - Fixup
>  - Remove mention of single-threaded notifications
>  - Update docs
>  - ... and 41 more: https://git.openjdk.org/crac/compare/ef2437e7...8fd3566c

Thanks for making the progress in this! And make things moving :)

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PR Comment: https://git.openjdk.org/crac/pull/43#issuecomment-1544103294