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