RFR: 8259851: Using boolean type for tasks in SubTasksDone

[Albert Mingkun Yang]

On Mon, 18 Jan 2021 15:30:48 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> For Zero I don't care. But there are affected platforms.

I see arm and s390 with grepping `CmpxchgByteUsingInt`; I will test specjbb2015 and dacapo on arm to see if there is any perf diff.

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PR: https://git.openjdk.java.net/jdk/pull/2131