89 lines
3.4 KiB
Java
89 lines
3.4 KiB
Java
/*
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* Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package gc.arguments;
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/**
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* @test TestDynMinHeapFreeRatio
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* @bug 8028391
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* @summary Verify that MinHeapFreeRatio flag is manageable
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* @modules java.management
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* @run main gc.arguments.TestDynMinHeapFreeRatio
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* @run main/othervm -XX:MinHeapFreeRatio=0 -XX:MaxHeapFreeRatio=100 gc.arguments.TestDynMinHeapFreeRatio
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* @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 -XX:-UseAdaptiveSizePolicy gc.arguments.TestDynMinHeapFreeRatio
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* @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=50 gc.arguments.TestDynMinHeapFreeRatio
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* @run main/othervm -XX:MinHeapFreeRatio=51 -XX:MaxHeapFreeRatio=52 gc.arguments.TestDynMinHeapFreeRatio
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* @run main/othervm -XX:MinHeapFreeRatio=75 -XX:MaxHeapFreeRatio=100 gc.arguments.TestDynMinHeapFreeRatio
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*/
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import static jdk.test.lib.Asserts.assertEQ;
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import static jdk.test.lib.Asserts.assertFalse;
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import static jdk.test.lib.Asserts.assertTrue;
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import jdk.test.lib.management.DynamicVMOption;
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public class TestDynMinHeapFreeRatio {
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public static void main(String args[]) throws Exception {
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// high boundary value
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int maxValue = DynamicVMOption.getInt("MaxHeapFreeRatio");
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System.out.println("MaxHeapFreeRatio= " + maxValue);
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String badValues[] = {
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null,
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"",
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"not a number",
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"8.5", "-0.01",
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Integer.toString(Integer.MIN_VALUE),
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Integer.toString(Integer.MAX_VALUE),
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Integer.toString(maxValue + 1),
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"-1024", "-1", "101", "1997"
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};
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String goodValues[] = {
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Integer.toString(maxValue),
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Integer.toString(maxValue - 1),
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Integer.toString(maxValue / 2),
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"0", "1"
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};
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// option under test
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DynamicVMOption option = new DynamicVMOption("MinHeapFreeRatio");
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assertTrue(option.isWriteable(), "Option " + option.name
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+ " is expected to be writable");
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for (String v : badValues) {
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assertFalse(option.isValidValue(v),
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"'" + v + "' is expected to be illegal for flag " + option.name);
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}
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for (String v : goodValues) {
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option.setValue(v);
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String newValue = option.getValue();
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assertEQ(v, newValue);
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}
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}
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}
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