/*

 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.

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

 *

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

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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).

 *

 * 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 TestRegionLivenessPrint.java

 * @bug 8151920

 * @requires vm.gc=="G1" | vm.gc=="null"

 * @summary Make sure that G1 does not assert when printing region liveness data on a humongous continues region.

 * @key gc

 * @library /testlibrary /test/lib

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

 * @build TestRegionLivenessPrint

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

 */

import sun.hotspot.WhiteBox;

public class TestRegionLivenessPrint {

  static byte[] bigobj = new byte[1024* 1024 * 2];

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

      WhiteBox wb = WhiteBox.getWhiteBox();

      // Run a concurrent mark cycle to trigger the liveness accounting log messages.

      wb.g1StartConcMarkCycle();

      while (wb.g1InConcurrentMark()) {

          Thread.sleep(100);

      }

  }

}