1 /* 2 * Copyright (c) 2016, 2019, 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 package gc.arguments; 25 26 /* 27 * @test TestG1PercentageOptions 28 * @key gc 29 * @bug 8068942 30 * @requires vm.gc.G1 31 * @summary Test argument processing of various percentage options 32 * @library /test/lib 33 * @library / 34 * @modules java.base/jdk.internal.misc 35 * java.management 36 * @run driver gc.arguments.TestG1PercentageOptions 37 */ 38 39 import jdk.test.lib.process.OutputAnalyzer; 40 import jdk.test.lib.process.ProcessTools; 41 42 public class TestG1PercentageOptions { 43 44 private static final class OptionDescription { 45 public final String name; 46 public final String[] valid; 47 public final String[] invalid; 48 OptionDescription(String name_, String[] valid_, String[] invalid_)49 OptionDescription(String name_, String[] valid_, String[] invalid_) { 50 name = name_; 51 valid = valid_; 52 invalid = invalid_; 53 } 54 } 55 56 private static final String[] defaultValid = new String[] { 57 "0", "1", "50", "95", "100" }; 58 private static final String[] defaultInvalid = new String[] { 59 "-10", "110", "bad" }; 60 61 // All of the G1 product arguments that are percentages. 62 private static final OptionDescription[] percentOptions = new OptionDescription[] { 63 new OptionDescription("G1ConfidencePercent", defaultValid, defaultInvalid) 64 // Other percentage options are not yet validated by argument processing. 65 }; 66 check(String flag, boolean is_valid)67 private static void check(String flag, boolean is_valid) throws Exception { 68 String[] flags = new String[] { "-XX:+UseG1GC", flag, "-version" }; 69 ProcessBuilder pb = GCArguments.createJavaProcessBuilder(flags); 70 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 71 if (is_valid) { 72 output.shouldHaveExitValue(0); 73 } else { 74 output.shouldHaveExitValue(1); 75 } 76 } 77 78 private static check(String name, String value, boolean is_valid)79 void check(String name, String value, boolean is_valid) throws Exception { 80 check("-XX:" + name + "=" + value, is_valid); 81 } 82 main(String args[])83 public static void main(String args[]) throws Exception { 84 for (OptionDescription option : percentOptions) { 85 for (String value : option.valid) { 86 check(option.name, value, true); 87 } 88 for (String value : option.invalid) { 89 check(option.name, value, false); 90 } 91 check("-XX:" + option.name, false); 92 check("-XX:+" + option.name, false); 93 check("-XX:-" + option.name, false); 94 } 95 } 96 } 97