/*

 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.

 * 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 CheckAllocateAndSystemGC

 * @summary CMS: assert(used() == used_after_gc && used_after_gc <= capacity()) failed: used: 0 used_after_gc: 292080 capacity: 1431699456

 * @bug 8013032

 * @key gc

 * @key regression

 * @library /testlibrary

 * @run main/othervm CheckAllocateAndSystemGC

 * @author jon.masamitsu@oracle.com

 */

import com.oracle.java.testlibrary.*;

public class CheckAllocateAndSystemGC {

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

    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

      "-showversion",

      "-XX:+UseConcMarkSweepGC",

      "-Xmn4m",

      "-XX:MaxTenuringThreshold=1",

      "-XX:-UseCMSCompactAtFullCollection",

      "CheckAllocateAndSystemGC$AllocateAndSystemGC"

      );

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

    output.shouldNotContain("error");

    output.shouldHaveExitValue(0);

  }

  static class AllocateAndSystemGC {

    public static void main(String [] args) {

      Integer x[] = new Integer [1000];

      // Allocate enough objects to cause a minor collection.

      // These allocations suffice for a 4m young geneneration.

      for (int i = 0; i < 100; i++) {

        Integer y[] = new Integer[10000];

      }

      System.gc();

    }

  }

}