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 TestDynMinHeapFreeRatio 26 * @bug 8028391 27 * @summary Verify that MinHeapFreeRatio flag is manageable 28 * @library /testlibrary 29 * @run main TestDynMinHeapFreeRatio 30 * @run main/othervm -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 TestDynMinHeapFreeRatio 31 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:-UseAdaptiveSizePolicy TestDynMinHeapFreeRatio 32 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 TestDynMinHeapFreeRatio 33 * @run main/othervm -XX:MinHeapFreeRatio=51 -XX:MaxHeapFreeRatio=52 TestDynMinHeapFreeRatio 34 * @run main/othervm -XX:MinHeapFreeRatio=75 -XX:MaxHeapFreeRatio=100 TestDynMinHeapFreeRatio 35 */ 36 import com.oracle.java.testlibrary.TestDynamicVMOption; 37 import com.oracle.java.testlibrary.DynamicVMOptionChecker; 38 39 public class TestDynMinHeapFreeRatio extends TestDynamicVMOption { 40 41 public static final String MinFreeRatioFlagName = "MinHeapFreeRatio"; 42 public static final String MaxFreeRatioFlagName = "MaxHeapFreeRatio"; 43 44 public TestDynMinHeapFreeRatio() { 45 super(MinFreeRatioFlagName); 46 } 47 48 public void test() { 49 int maxHeapFreeValue = DynamicVMOptionChecker.getIntValue(MaxFreeRatioFlagName); 50 System.out.println(MaxFreeRatioFlagName + " = " + maxHeapFreeValue); 51 52 testPercentageValues(); 53 54 checkInvalidValue(Integer.toString(maxHeapFreeValue + 1)); 55 checkValidValue(Integer.toString(maxHeapFreeValue)); 56 checkValidValue("0"); 57 } 58 59 public static void main(String args[]) throws Exception { 60 new TestDynMinHeapFreeRatio().test(); 61 } 62 }