RFR: 7902989: jcstress: Add samples for high-level race conditions [v8]

[Aleksey Shipilev]

On Fri, 2 Jul 2021 14:31:18 GMT, Michael Mirwaldt <github.com+6693355+mmirwaldt at openjdk.org> wrote:

>> I have created two more samples:
>> 
>> - one sample for read-modify-write-sequences
>> - one sample for check-then-react-sequences
>
> Michael Mirwaldt has updated the pull request incrementally with one additional commit since the last revision:
> 
>   renamed temp vars v1 to t1 and v2 to t2

jcstress-samples/src/main/java/org/openjdk/jcstress/samples/high/race/condition/RaceCondition_01_ReadModifyWriteSequence.java line 44:

> 42: @Outcome(id = {"250, 150, 150"}, expect = ACCEPTABLE, desc = "1: v=200, 1: t1=250, 1: v=t1, 2: v=250, 2: t2=150, 2: v=t2")
> 43: @Outcome(id = {"250, 100, 250"}, expect = ACCEPTABLE_INTERESTING, desc = "1: v=200, 1: t1=250, 2: v=200, 2: t2=100, 2: v=t2, 1: v=t1")
> 44: @Outcome(id = {"250, 100, 100"}, expect = ACCEPTABLE_INTERESTING, desc = "1: v=200, 1: t1=250, 2: v=200, 2: t2=100, 1: v=t1, 2: v=t2")

Suggestion:

@Outcome(id = {"150, 100, 150"}, expect = ACCEPTABLE, desc = "actor2 completed first, then actor1 completed")
@Outcome(id = {"250, 150, 150"}, expect = ACCEPTABLE, desc = "actor1 completed first, then actor2")
@Outcome(id = {"250, 100, 250"}, expect = ACCEPTABLE_INTERESTING, desc = "actors conflicted, actor1 won the race")
@Outcome(id = {"250, 100, 100"}, expect = ACCEPTABLE_INTERESTING, desc = "actors conflicted, actor2 won the race")

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