Withdrawn: 8355636: Reuse StringBuilder in printStackTrace

[Shaojin Wen]

On Fri, 25 Apr 2025 01:36:50 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> In the Throwable::printStackTrace method, StringBuilder is created multiple times to build String. By sharing StringBuilder to build String, object allocation and copying are reduced.
> 
> In the scenario without suppressed and ourCause, unused IdentityHashMap is not created.
> 
> Through these optimizations, the performance of `new Exception().printStackTrace()` can be improved by about 10%.

This pull request has been closed without being integrated.

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PR: https://git.openjdk.org/jdk/pull/24864