RFR: 8355636: Speed ​​up Throwable::printStackTrace by reducing object allocation [v3]

[Hannes Greule]

On Sat, 26 Apr 2025 07:28:03 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> The goal of the optimization is also very clear, which is to make the program perform better when a large number of exceptions are thrown when an error occurs. This is a very typical scenario.

But that's not what's happening here. While *throwing* exceptions **can** be performance-sensitive, *printing* exceptions is far less important. I'm not convinced that printing exceptions is a very typical scenario.

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PR Comment: https://git.openjdk.org/jdk/pull/24864#issuecomment-2831938869