RFR: 7902989: jcstress: Add samples for high-level race conditions [v7]

[Aleksey Shipilev]

On Fri, 2 Jul 2021 14:22:43 GMT, Michael Mirwaldt <github.com+6693355+mmirwaldt at openjdk.org> wrote:

>> jcstress-samples/src/main/java/org/openjdk/jcstress/samples/high/race/condition/RaceCondition_01_ReadModifyWriteSequence.java line 65:
>> 
>>> 63: 
>>> 64:         r.r2 = v2;
>>> 65:     }
>> 
>> Suggestion:
>> 
>>         int t = v;
>>         t -= 100;
>>         v = t;
>>         r.r2 = t;
>>     }
>
> Can we call them t1 and t2 for the descriptions in the outcomes, please?
> @vlsi asked me for traces in the descriptions:
> 
> @Outcome(id = {"150, 100, 150"}, expect = ACCEPTABLE, desc = "2: v=200, 2: v2=100, 2: v=v2, 1: v=100, 1: v1=150, 1: v=v1")
> @Outcome(id = {"250, 150, 150"}, expect = ACCEPTABLE, desc = "1: v=200, 1: v1=250, 1: v=v1, 2: v=250, 2: v2=150, 2: v=v2")
> @Outcome(id = {"250, 100, 250"}, expect = ACCEPTABLE_INTERESTING, desc = "1: v=200, 1: v1=250, 2: v=200, 2: v2=100, 2: v=v2, 1: v=v1")
> @Outcome(id = {"250, 100, 100"}, expect = ACCEPTABLE_INTERESTING, desc = "1: v=200, 1: v1=250, 2: v=200, 2: v2=100, 1: v=v1, 2: v=v2")
> 
> Then I will replace v1 by t1 and v2 by t2.

Yes, sure.

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PR: https://git.openjdk.java.net/jcstress/pull/88