RFR: 8316305: Initial buffer size of StackWalker is too small caused by JDK-8285447 [v4]

[Brent Christian]

On Fri, 22 Sep 2023 17:32:32 GMT, Mandy Chung <mchung at openjdk.org> wrote:

>> A trivial fix.   [JDK-8285447](https://bugs.openjdk.org/browse/JDK-8285447) intends to change the initial batch size only for a stack walker with an estimated stack depth. For stack walkers without user-supplied estimated stack depth, the initial batch size is changed to 3 which is a bug.  This causes the stack walker to fetch the second batch after walking 2 frames.
>
> Mandy Chung has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains six commits:
> 
>  - Merge branch 'master' of https://github.com/openjdk/jdk into JDK-8316305
>  - Revert this change. PR 15876
>  - Fix a warning caused by 8316456
>  - Merge
>  - Merge branch 'master' of https://github.com/openjdk/jdk into JDK-8316305
>  - 8316305: Initial buffer size of StackWalker is too small caused by JDK-8285447

Marked as reviewed by bchristi (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/15749#pullrequestreview-1640462720