1 /* 2 * Copyright (c) 2016, 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 TestShrinkHeapInSteps 26 * @key gc 27 * @summary Verify that -XX:-ShrinkHeapInSteps works properly. 28 * @library /test/lib 29 * @modules java.base/jdk.internal.misc 30 * java.management 31 * @run driver/timeout=240 TestShrinkHeapInSteps 32 */ 33 34 import java.util.LinkedList; 35 import java.util.Arrays; 36 import java.util.Collections; 37 import jdk.test.lib.Utils; 38 39 public class TestShrinkHeapInSteps { 40 public static void main(String args[]) throws Exception { 41 LinkedList<String> options = new LinkedList<>( 42 Arrays.asList(Utils.getFilteredTestJavaOpts("-XX:[^ ]*HeapFreeRatio","-XX:\\+ExplicitGCInvokesConcurrent")) 43 ); 44 45 // Leverage the existing TestMaxMinHeapFreeRatioFlags test, but pass 46 // "false" for the shrinkHeapInSteps argument. This will cause it to 47 // run with -XX:-ShrinkHeapInSteps, and only do 1 full GC instead of 10. 48 TestMaxMinHeapFreeRatioFlags.positiveTest(10, false, 90, false, false, options); 49 TestMaxMinHeapFreeRatioFlags.positiveTest(10, true, 80, false, false, options); 50 TestMaxMinHeapFreeRatioFlags.positiveTest(20, false, 70, true, false, options); 51 TestMaxMinHeapFreeRatioFlags.positiveTest(25, true, 65, true, false, options); 52 TestMaxMinHeapFreeRatioFlags.positiveTest(40, false, 50, false, false, options); 53 } 54 }