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 TestG1PercentageOptions 26 * @key gc 27 * @bug 8068942 28 * @requires vm.gc.G1 29 * @summary Test argument processing of various percentage options 30 * @library /testlibrary 31 * @modules java.base/jdk.internal.misc 32 * java.management 33 * @run driver TestG1PercentageOptions 34 */ 35 36 import jdk.test.lib.*; 37 38 public class TestG1PercentageOptions { 39 40 private static final class OptionDescription { 41 public final String name; 42 public final String[] valid; 43 public final String[] invalid; 44 45 OptionDescription(String name_, String[] valid_, String[] invalid_) { 46 name = name_; 47 valid = valid_; 48 invalid = invalid_; 49 } 50 } 51 52 private static final String[] defaultValid = new String[] { 53 "0", "1", "50", "95", "100" }; 54 private static final String[] defaultInvalid = new String[] { 55 "-10", "110", "bad" }; 56 57 // All of the G1 product arguments that are percentages. 58 private static final OptionDescription[] percentOptions = new OptionDescription[] { 59 new OptionDescription("G1ConfidencePercent", defaultValid, defaultInvalid) 60 // Other percentage options are not yet validated by argument processing. 61 }; 62 63 private static void check(String flag, boolean is_valid) throws Exception { 64 String[] flags = new String[] { "-XX:+UseG1GC", flag, "-version" }; 65 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags); 66 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 67 if (is_valid) { 68 output.shouldHaveExitValue(0); 69 } else { 70 output.shouldHaveExitValue(1); 71 } 72 } 73 74 private static 75 void check(String name, String value, boolean is_valid) throws Exception { 76 check("-XX:" + name + "=" + value, is_valid); 77 } 78 79 public static void main(String args[]) throws Exception { 80 for (OptionDescription option : percentOptions) { 81 for (String value : option.valid) { 82 check(option.name, value, true); 83 } 84 for (String value : option.invalid) { 85 check(option.name, value, false); 86 } 87 check("-XX:" + option.name, false); 88 check("-XX:+" + option.name, false); 89 check("-XX:-" + option.name, false); 90 } 91 } 92 }