RFR: 8266963: Remove safepoint poll introduced in 8262443 due to reentrance issue [v2]

[Robbin Ehn]

On Mon, 24 May 2021 09:27:15 GMT, David Holmes <dholmes at openjdk.org> wrote:

> Hold on a moment! This undoes 8262443, so what happens with the issue that bug was fixing?

As I said above, it's seem like I'm the only one seen an issue with this, so I'm the finder/reporter and fixer of the original bug.
In a ZGC branch they run this code in StackWater, which than also hits this problem.
Since this is just a performance enhancement it was suggested to just remove this.

I don't have time to figure out exactly what happens when we start looping here, so I'm fine with removing this for now.

Thanks, Robbin

> 
> David

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PR: https://git.openjdk.java.net/jdk/pull/4028