jdk8-mips64-public/hotspot: test/gc/arguments/TestDynMinHeapFreeRatio.java@6cbff0651f1a

     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  */

    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 static com.oracle.java.testlibrary.Asserts.assertEQ;

    37 import static com.oracle.java.testlibrary.Asserts.assertFalse;

    38 import static com.oracle.java.testlibrary.Asserts.assertTrue;

    39 import com.oracle.java.testlibrary.DynamicVMOption;

    41 public class TestDynMinHeapFreeRatio {

    43     public static void main(String args[]) throws Exception {

    45         // high boundary value

    46         int maxValue = DynamicVMOption.getInt("MaxHeapFreeRatio");

    47         System.out.println("MaxHeapFreeRatio= " + maxValue);

    49         String badValues[] = {

    50             null,

    51             "",

    52             "not a number",

    53             "8.5", "-0.01",

    54             Integer.toString(Integer.MIN_VALUE),

    55             Integer.toString(Integer.MAX_VALUE),

    56             Integer.toString(maxValue + 1),

    57             "-1024", "-1", "101", "1997"

    58         };

    60         String goodValues[] = {

    61             Integer.toString(maxValue),

    62             Integer.toString(maxValue - 1),

    63             Integer.toString(maxValue / 2),

    64             "0", "1"

    65         };

    67         // option under test

    68         DynamicVMOption option = new DynamicVMOption("MinHeapFreeRatio");

    70         assertTrue(option.isWriteable(), "Option " + option.name

    71                 + " is expected to be writable");

    73         for (String v : badValues) {

    74             assertFalse(option.isValidValue(v),

    75                     "'" + v + "' is expected to be illegal for flag " + option.name);

    76         }

    78         for (String v : goodValues) {

    79             option.setValue(v);

    80             String newValue = option.getValue();

    81             assertEQ(v, newValue);

    82         }

    83     }

    84 }

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