RFR: 8304996: Add missing HandleMarks [v2]

[David Holmes]

On Thu, 30 Mar 2023 00:46:08 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> David Holmes has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Shipilev feedback - moved HMs back inside the loops.
>
> What are the rules for using HandleMarks? In the HotSpot code, there are plenty of cases where we create a HandleMark without creating any Handles in the immediately following code. There are also plenty of cases where Handles are created in functions that do not have any HandleMarks.

Any other comments? @iklam or @coleenp ?

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PR Comment: https://git.openjdk.org/jdk/pull/13215#issuecomment-1493465601