Integrated: 8253794: TestAbortVMOnSafepointTimeout never timeouts

[Robbin Ehn]

On Thu, 1 Oct 2020 14:35:45 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

> The issue is that this test doesn't consider Handshake All operation.
> Depending if/when such operation is scheduled it can lockup the VM thread.
> And the safepoint that should timeout never happens.
> See issue for more information.
> 
> So I changed the test to "try timeout" the safepoint, but if there was no safepoint (blocked by a handshake all), we
> retry. We sleep unsafe much longer than the interval SafepointALot generates operations, which 'guarantees' we will
> timeout if there is no handshake all. (some extreme case of kernel scheduling causing a very long context switch could
> also make us not timeout)  Passes t1, t3, and repeat runs of the test.

This pull request has now been integrated.

Changeset: c9d0407e
Author:    Robbin Ehn <rehn at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/c9d0407e
Stats:     67 lines in 3 files changed: 22 ins; 36 del; 9 mod

8253794: TestAbortVMOnSafepointTimeout never timeouts

Reviewed-by: pchilanomate, dcubed, mdoerr

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PR: https://git.openjdk.java.net/jdk/pull/465