jdk-24/hotspot/test/gc/g1/TestRemsetLoggingPerRegion.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test TestRemsetLoggingPerRegion.java
 * @bug 8014078 8129977
 * @library /testlibrary
 * @modules java.base/sun.misc
 *          java.management/sun.management
 * @build TestRemsetLoggingTools TestRemsetLoggingPerRegion
 * @summary Verify output of -Xlog:gc+remset*=trace in regards to per-region type output
 * @run main TestRemsetLoggingPerRegion
 */

import jdk.test.lib.*;
import java.lang.Thread;
import java.util.ArrayList;
import java.util.Arrays;

public class TestRemsetLoggingPerRegion {

    public static void main(String[] args) throws Exception {
        String result;

        if (!TestRemsetLoggingTools.testingG1GC()) {
            return;
        }

        // single remembered set summary output at the end
        result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace" }, 0);
        TestRemsetLoggingTools.expectPerRegionRSetSummaries(result, 1, 0);

        // two times remembered set summary output
        result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=1" }, 1);
        TestRemsetLoggingTools.expectPerRegionRSetSummaries(result, 1, 2);
    }
}