RFR: 8193559: ugly DO_JAVA_THREADS macro should be replaced

[Daniel D.Daugherty]

On Fri, 2 Jul 2021 20:58:23 GMT, Erik Österlund <eosterlund at openjdk.org> wrote:

>> This is a simple rewrite of what is "Possibly the ugliest for loop the world has seen."
>> Thanks to @stefank for the draft proposed fix. Thanks to @fisk for providing this
>> piece of history that I'm finally getting around to cleaning up. While this macro has
>> been with us for a long time, its time has passed...
>> 
>> Tested with Mach5 Tier[1-3].
>
> Goodbye ugly macro. You have served us well. Looks good Dan. Thanks for cleaning up.

@fisk - Thanks for the review!

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PR: https://git.openjdk.java.net/jdk/pull/4671