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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

 * under the terms of the GNU General Public License version 2 only, as

 * 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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/**

 * @test TestPrintRegionRememberedSetInfo

 * @key gc

 * @bug 8014240

 * @summary Test output of G1PrintRegionRememberedSetInfo

 * @library /testlibrary

 * @run main TestPrintRegionRememberedSetInfo

 * @author thomas.schatzl@oracle.com

 */

import com.oracle.java.testlibrary.*;

import java.lang.Thread;

import java.util.ArrayList;

import java.util.Arrays;

class RunAndWaitForMarking {

    public static void main(String[] args) {

        System.gc();

        try {

            Thread.sleep(200);

        } catch (InterruptedException e) {

        }

    }

}

public class TestPrintRegionRememberedSetInfo {

    public static String runTest(String arg) throws Exception {

        ArrayList<String> finalargs = new ArrayList<String>();

        String[] defaultArgs = new String[] {

            "-XX:+UseG1GC",

            "-Xmx10m",

            "-XX:+ExplicitGCInvokesConcurrent",

            "-XX:+UnlockDiagnosticVMOptions",

            "-XX:+G1PrintRegionLivenessInfo",

            "-XX:G1HeapRegionSize=1M",

            "-XX:InitiatingHeapOccupancyPercent=0",

        };

        finalargs.addAll(Arrays.asList(defaultArgs));

        finalargs.add(arg);

        finalargs.add(RunAndWaitForMarking.class.getName());

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

            finalargs.toArray(new String[0]));

        OutputAnalyzer output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        String result = output.getStdout();

        return result;

    }

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

        String result;

        result = runTest("-XX:+G1PrintRegionLivenessInfo");

        // check that we got region statistics output

        if (result.indexOf("PHASE") == -1) {

            throw new RuntimeException("Unexpected output from -XX:+PrintRegionLivenessInfo found.");

        }

        result = runTest("-XX:-G1PrintRegionLivenessInfo");

        if (result.indexOf("remset") != -1) {

            throw new RuntimeException("Should find remembered set information in output.");

        }

    }

}