TestRemsetLogging.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
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 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 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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 */

package gc.g1;

/*
 * @test TestRemsetLogging.java
 * @requires vm.gc.G1
 * @bug 8013895 8129977 8145534
 * @library /test/lib
 * @library /
 * @modules java.base/jdk.internal.misc
 *          java.management/sun.management
 * @build sun.hotspot.WhiteBox
 * @run driver jdk.test.lib.helpers.ClassFileInstaller sun.hotspot.WhiteBox
 * @summary Verify output of -Xlog:gc+remset*=trace
 * @run driver gc.g1.TestRemsetLogging
 *
 * Test the output of -Xlog:gc+remset*=trace in conjunction with G1SummarizeRSetStatsPeriod.
 */

public class TestRemsetLogging {

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

        // no remembered set summary output
        result = TestRemsetLoggingTools.runTest(null, 0);
        TestRemsetLoggingTools.expectRSetSummaries(result, 0, 0);

        // no remembered set summary output
        result = TestRemsetLoggingTools.runTest(null, 2);
        TestRemsetLoggingTools.expectRSetSummaries(result, 0, 0);

        // no remembered set summary output
        result = TestRemsetLoggingTools.runTest(new String[] { "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
        TestRemsetLoggingTools.expectRSetSummaries(result, 0, 0);

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

        // single remembered set summary output at the end
        result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace" }, 2);
        TestRemsetLoggingTools.expectRSetSummaries(result, 1, 0);

        // single remembered set summary output
        result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=1" }, 0);
        TestRemsetLoggingTools.expectRSetSummaries(result, 1, 0);

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

        // four times remembered set summary output
        result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
        TestRemsetLoggingTools.expectRSetSummaries(result, 1, 6);

        // three times remembered set summary output
        result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=2" }, 3);
        TestRemsetLoggingTools.expectRSetSummaries(result, 1, 4);

        // single remembered set summary output
        result = TestRemsetLoggingTools.runTest(new String[] { "-Xlog:gc+remset*=trace", "-XX:G1SummarizeRSetStatsPeriod=100" }, 3);
        TestRemsetLoggingTools.expectRSetSummaries(result, 1, 2);
    }
}