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 }