1 /* 2 * Copyright (c) 2015, 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 * @summary Test argument processing of various percentage options 29 * @library /testlibrary 30 * @modules java.base/sun.misc 31 * java.management 32 * @run driver TestG1PercentageOptions 33 */ 34 35 import jdk.test.lib.*; 36 37 public class TestG1PercentageOptions { 38 39 private static final class OptionDescription { 40 public final String name; 41 public final String[] valid; 42 public final String[] invalid; 43 44 OptionDescription(String name_, String[] valid_, String[] invalid_) { 45 name = name_; 46 valid = valid_; 47 invalid = invalid_; 48 } 49 } 50 51 private static final String[] defaultValid = new String[] { 52 "0", "1", "50", "95", "100" }; 53 private static final String[] defaultInvalid = new String[] { 54 "-10", "110", "bad" }; 55 56 // All of the G1 product arguments that are percentages. 57 private static final OptionDescription[] percentOptions = new OptionDescription[] { 58 new OptionDescription("G1ConfidencePercent", defaultValid, defaultInvalid) 59 // Other percentage options are not yet validated by argument processing. 60 }; 61 62 private static void check(String flag, boolean is_valid) throws Exception { 63 String[] flags = new String[] { "-XX:+UseG1GC", flag, "-version" }; 64 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags); 65 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 66 if (is_valid) { 67 output.shouldHaveExitValue(0); 68 } else { 69 output.shouldHaveExitValue(1); 70 } 71 } 72 73 private static 74 void check(String name, String value, boolean is_valid) throws Exception { 75 check("-XX:" + name + "=" + value, is_valid); 76 } 77 78 public static void main(String args[]) throws Exception { 79 for (OptionDescription option : percentOptions) { 80 for (String value : option.valid) { 81 check(option.name, value, true); 82 } 83 for (String value : option.invalid) { 84 check(option.name, value, false); 85 } 86 check("-XX:" + option.name, false); 87 check("-XX:+" + option.name, false); 88 check("-XX:-" + option.name, false); 89 } 90 } 91 }