RFR: 8286045: Use ForceGC for cleaner test cases

Wed May 25 21:27:45 UTC 2022

On Wed, 25 May 2022 17:23:06 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> (But ForceGC is a heavyweight blunt instrument. It creates a new Cleaner for every instance and an instance can only be used once. Also, its minimum wait/sleep time is 1 second, that's a loooong time.).

I thought about something similar when I read the ForceGC implementation.  I may file an enhancement for ForceGC later.

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PR: https://git.openjdk.java.net/jdk/pull/8885