RFR: JDK-8292351: tty should always live

Mon Aug 15 15:15:25 UTC 2022

On Mon, 15 Aug 2022 09:25:17 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> The default stream object tty is used in many places but its lifetime is limited. It gets born not-quite at the beginning of VM initialization and dies in DestroyVM. This leaves time windows before VM initialization and after VM cleanup where logging to tty crashes.
> 
> This has been bugging me in the past, especially when wanting to use tty in code that runs very early (NMT preinit system, for example), and also causes problems for code that runs post-cleanup. Mostly this affects logging and error logging.
> 
> tty should always be safe to write to, and that is trivial to do.

The goal should be to replace tty with UL in as many cases as possible. So to me this change is great, because in the far future we can reduce tty to only this in those rare cases where UL isn't available yet.

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PR: https://git.openjdk.org/jdk/pull/9874