/*

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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

*

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*

* 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).

*

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* 2 along with this work; if not, write to the Free Software Foundation,

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import jdk.test.lib.JDKToolFinder;

import jdk.test.lib.OutputAnalyzer;

import jdk.test.lib.ProcessTools;

import jdk.test.lib.Platform;

/*

 * @test TestCardTablePageCommits

 * @key gc

 * @bug 8059066

 * @summary Tests that the card table does not commit the same page twice

 * @requires vm.gc=="Parallel" | vm.gc=="null"

 * @library /testlibrary

 * @modules java.base/jdk.internal.misc

 *          java.management

 * @run driver TestCardTablePageCommits

 */

public class TestCardTablePageCommits {

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

        // The test is run with a small heap to make sure all pages in the card

        // table gets committed. Need 8 MB heap to trigger the bug on SPARC

        // because of 8kB pages, assume 4 KB pages for all other CPUs.

        String Xmx = Platform.isSparc() ? "-Xmx8m" : "-Xmx4m";

        String[] opts = {Xmx, "-XX:NativeMemoryTracking=detail", "-XX:+UseParallelGC", "-version"};

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(opts);

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

        output.shouldHaveExitValue(0);

    }

}