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 /* 26 * @test TestDynMaxHeapFreeRatio 27 * @key gc 28 * @bug JDK-8028391 29 * @summary Verify that MaxHeapFreeRatio flag is managable 30 * @library /testlibrary /testlibrary/gc 31 * @build TestDynMaxHeapFreeRatio com.oracle.java.testlibrary.VMOptionValueChecker 32 * @run main TestDynMaxHeapFreeRatio 33 * @run main/othervm -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio 34 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:-UseAdaptiveSizePolicy TestDynMaxHeapFreeRatio 35 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 TestDynMaxHeapFreeRatio 36 * @run main/othervm -XX:MinHeapFreeRatio=51 -XX:MaxHeapFreeRatio=52 TestDynMaxHeapFreeRatio 37 * @run main/othervm -XX:MinHeapFreeRatio=75 -XX:MaxHeapFreeRatio=100 TestDynMaxHeapFreeRatio 38 */ 39 import com.oracle.java.testlibrary.*; 40 41 public class TestDynMaxHeapFreeRatio { 42 43 public static final String MinFreeRatioFlagName = "MinHeapFreeRatio"; 44 public static final String MaxFreeRatioFlagName = "MaxHeapFreeRatio"; 45 46 public static void main(String args[]) throws Exception { 47 48 int minHeapFreeValue = VMOptionValueChecker.getIntWritableValue(MinFreeRatioFlagName); 49 int maxHeapFreeValue = VMOptionValueChecker.getIntWritableValue(MaxFreeRatioFlagName); 50 System.out.println(MinFreeRatioFlagName + " = " + minHeapFreeValue); 51 System.out.println(MaxFreeRatioFlagName + " = " + maxHeapFreeValue); 52 53 VMOptionValueChecker.checkInvalidValue(MaxFreeRatioFlagName, Integer.toString(Integer.MIN_VALUE)); 54 VMOptionValueChecker.checkInvalidValue(MaxFreeRatioFlagName, Integer.toString(Integer.MAX_VALUE)); 55 VMOptionValueChecker.checkInvalidValue(MaxFreeRatioFlagName, "-10"); 56 57 VMOptionValueChecker.checkInvalidValue(MaxFreeRatioFlagName, Integer.toString(minHeapFreeValue - 1)); 58 VMOptionValueChecker.checkInvalidValue(MaxFreeRatioFlagName, "190"); 59 60 VMOptionValueChecker.checkValid(MaxFreeRatioFlagName, Integer.toString(minHeapFreeValue)); 61 VMOptionValueChecker.checkValid(MaxFreeRatioFlagName, "100"); 62 } 63 64 }