1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test TestDynMaxHeapFreeRatio
  26  * @bug 8028391
  27  * @summary Verify that MaxHeapFreeRatio flag is manageable
  28  * @build TestDynamicIntVMOption TestDynMaxHeapFreeRatio
  29  * @run main TestDynMaxHeapFreeRatio
  30  * @run main/othervm -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio
  31  * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:-UseAdaptiveSizePolicy TestDynMaxHeapFreeRatio
  32  * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 TestDynMaxHeapFreeRatio
  33  * @run main/othervm -XX:MinHeapFreeRatio=51 -XX:MaxHeapFreeRatio=52 TestDynMaxHeapFreeRatio
  34  * @run main/othervm -XX:MinHeapFreeRatio=75 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio
  35  */
  36 public class TestDynMaxHeapFreeRatio extends TestDynamicIntVMOption {
  37 
  38     public static final String MinFreeRatioFlagName = "MinHeapFreeRatio";
  39     public static final String MaxFreeRatioFlagName = "MaxHeapFreeRatio";
  40 
  41     public TestDynMaxHeapFreeRatio() {
  42         super( MaxFreeRatioFlagName );
  43     }
  44 
  45     public void test() {
  46 
  47         int minHeapFreeValue = getIntValue( MinFreeRatioFlagName );
  48         System.out.println( MinFreeRatioFlagName + " = " + minHeapFreeValue );
  49 
  50         testPercentageValues();
  51 
  52         checkInvalidValue( Integer.toString( minHeapFreeValue - 1 ) );
  53         checkValidValue( Integer.toString( minHeapFreeValue ) );
  54         checkValidValue( "100" );
  55     }
  56 
  57     public static void main( String args[] ) throws Exception {
  58         new TestDynMaxHeapFreeRatio().test();
  59     }
  60 
  61 }