RFR: 8303198: System and Runtime.exit() resilience to logging errors

[Roger Riggs]

On Mon, 27 Feb 2023 15:58:33 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Consolidate logging and handle exceptions by printing to standard error and ignoring the exception.
>> Exceptions while logging will not interfere with Runtime.exit.
>
> src/java.base/share/classes/java/lang/Shutdown.java line 189:
> 
>> 187:             } catch (Throwable throwable2) {
>> 188:                 // Ignore
>> 189:             }
> 
> The update means that several threads racing to exit may result in more than one message being logged. I don't think that's a big issue but just wanted to make sure that this was deliberate.

Yes, its racy, and intentional, but from a diagnostic view, the developer should know that multiple callers were trying to exit. All but one will hang.  
Consolidating the code in a single method is cleaner and with fewer interactions between separate code blocks.

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PR: https://git.openjdk.org/jdk/pull/12770