RFR: 8311514: Incorrect regex in TestMetaSpaceLog.java [v2]

[Daohan Qu]

On Thu, 6 Jul 2023 11:17:15 GMT, Daohan Qu <dqu at openjdk.org> wrote:

>> The regex in jtreg test `TestMetaSpaceLog.java` is intended to capture the metaspace size before and after the reclamation. But it captures the wrong value. which might cause this test to always pass. The results of the capture can be displayed using a visualization tool.
>> 
>> Before this patch:
>> <img width="1128" alt="屏幕快照 2023-07-06 17 18 15" src="https://github.com/openjdk/jdk/assets/18374295/4e3b6606-24b3-4d7f-a70d-f312cb867fbf">
>> 
>> After this patch:
>> <img width="1125" alt="屏幕快照 2023-07-06 17 18 25" src="https://github.com/openjdk/jdk/assets/18374295/b100018e-2c39-4154-9ec7-80e5eedc212e">
>
> Daohan Qu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Match more parts of the metaspace change log

My fault. I see a test failure because that the "NonClass ... Class ..." part might not appear in the log, as suggested by the `else` branch in `MetaspaceUtils::print_metaspace_change()`. I'll fix that.

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PR Comment: https://git.openjdk.org/jdk/pull/14782#issuecomment-1623682912