TestFlushInterval.java

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package jdk.jfr.startupargs;

import java.time.Duration;

import jdk.jfr.FlightRecorder;
import jdk.jfr.Recording;
import jdk.jfr.internal.PlatformRecording;
import jdk.jfr.internal.PrivateAccess;

/**
 * @test
 * @summary Start a recording with a flush interval
 * @key jfr
 * @library /lib /
 * @modules jdk.jfr/jdk.jfr.internal
 * @run main/othervm -XX:StartFlightRecording=flush-interval=2s jdk.jfr.startupargs.TestFlushInterval
 */
public class TestFlushInterval {

    public static void main(String[] args) throws Exception {
        for (Recording r : FlightRecorder.getFlightRecorder().getRecordings()) {
            PrivateAccess p = PrivateAccess.getInstance();
            PlatformRecording pr = p.getPlatformRecording(r);
            Duration d = pr.getFlushInterval();
            if (d.equals(Duration.ofSeconds(2))) {
                return; //OK
            } else {
                throw new Exception("Unexpected flush-interval " + d);
            }
        }
        throw new Exception("No recording found");
    }

}