RFR: 8284686: Interval of < 1 ms disables ExecutionSample events

[Johannes Bechberger]

On Mon, 11 Apr 2022 16:53:08 GMT, Johannes Bechberger <duke at openjdk.java.net> wrote:

> Fixes the issue by rounding the period interval to the next full millisecond larger than zero.
> 
> The following from the bug report works now:
> 
> java -XX:StartFlightRecording=filename=flight.jfr,jdk.ExecutionSample#period=999us CLASS_FILE; jfr print --events jdk.ExecutionSample flight.jfr
> 
> It considers the period to be `1ms`, producing the recording as expected.

The failing test seems to fail spuriously on Mac aarch64 (https://bugs.openjdk.java.net/browse/JDK-8284144). It does not have any relation to the proposed changes (it should not even call the changed code as JFR is not used).

-------------

PR: https://git.openjdk.java.net/jdk/pull/8183