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annotate test/gc/arguments/TestDynMinHeapFreeRatio.java @ 20973:cb406df0ecc3

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author Tom Rodriguez <tom.rodriguez@oracle.com>
date Tue, 14 Apr 2015 11:36:42 -0700
parents e2976043eac3
children
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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /**
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25 * @test TestDynMinHeapFreeRatio
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26 * @bug 8028391
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27 * @summary Verify that MinHeapFreeRatio flag is manageable
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28 * @library /testlibrary
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29 * @run main TestDynMinHeapFreeRatio
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30 * @run main/othervm -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 TestDynMinHeapFreeRatio
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31 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:-UseAdaptiveSizePolicy TestDynMinHeapFreeRatio
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32 * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 TestDynMinHeapFreeRatio
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33 * @run main/othervm -XX:MinHeapFreeRatio=51 -XX:MaxHeapFreeRatio=52 TestDynMinHeapFreeRatio
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34 * @run main/othervm -XX:MinHeapFreeRatio=75 -XX:MaxHeapFreeRatio=100 TestDynMinHeapFreeRatio
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35 */
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36 import static com.oracle.java.testlibrary.Asserts.assertEQ;
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37 import static com.oracle.java.testlibrary.Asserts.assertFalse;
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38 import static com.oracle.java.testlibrary.Asserts.assertTrue;
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39 import com.oracle.java.testlibrary.DynamicVMOption;
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40
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41 public class TestDynMinHeapFreeRatio {
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42
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43 public static void main(String args[]) throws Exception {
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44
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45 // high boundary value
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46 int maxValue = DynamicVMOption.getInt("MaxHeapFreeRatio");
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47 System.out.println("MaxHeapFreeRatio= " + maxValue);
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48
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49 String badValues[] = {
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50 null,
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51 "",
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52 "not a number",
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53 "8.5", "-0.01",
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54 Integer.toString(Integer.MIN_VALUE),
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55 Integer.toString(Integer.MAX_VALUE),
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56 Integer.toString(maxValue + 1),
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57 "-1024", "-1", "101", "1997"
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58 };
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59
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60 String goodValues[] = {
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61 Integer.toString(maxValue),
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62 Integer.toString(maxValue - 1),
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63 Integer.toString(maxValue / 2),
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64 "0", "1"
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65 };
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66
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67 // option under test
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68 DynamicVMOption option = new DynamicVMOption("MinHeapFreeRatio");
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69
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70 assertTrue(option.isWriteable(), "Option " + option.name
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71 + " is expected to be writable");
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72
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73 for (String v : badValues) {
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74 assertFalse(option.isValidValue(v),
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75 "'" + v + "' is expected to be illegal for flag " + option.name);
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76 }
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77
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78 for (String v : goodValues) {
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79 option.setValue(v);
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80 String newValue = option.getValue();
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81 assertEQ(v, newValue);
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82 }
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83 }
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84 }