test/jdk/jdk/jfr/event/gc/configuration/TestGCHeapConfigurationEventWithZeroBasedOops.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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package jdk.jfr.event.gc.configuration;

import jdk.jfr.consumer.RecordedEvent;
import jdk.test.lib.jfr.EventVerifier;

/* See the shell script wrapper for the flags used when invoking the JVM */
public class TestGCHeapConfigurationEventWithZeroBasedOops extends GCHeapConfigurationEventTester {
    public static void main(String[] args) throws Exception {
        GCHeapConfigurationEventTester t = new TestGCHeapConfigurationEventWithZeroBasedOops();
        t.run();
    }

    @Override
    protected EventVerifier createVerifier(RecordedEvent e) {
        return new ZeroBasedOopsVerifier(e);
    }
}

class ZeroBasedOopsVerifier extends GCHeapConfigurationEventVerifier {
    public ZeroBasedOopsVerifier(RecordedEvent e) {
        super(e);
    }

    @Override
    public void verify() throws Exception {
        // Can't verify min and initial heap size due to constraints on
        // physical memory on tests machines

        verifyMaxHeapSizeIs(gigabytes(4));
        verifyUsesCompressedOopsIs(true);
        verifyObjectAlignmentInBytesIs(8);
        verifyHeapAddressBitsIs(32);
        verifyCompressedOopModeIs("Zero based");
    }
}