1 /* 2 * Copyright (c) 2018, Red Hat, Inc. All rights reserved. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 /* 25 * @test TestClassUnloadingArguments 26 * @summary Test that loop mining arguments are sane 27 * @key gc 28 * @library /test/lib 29 * @run driver TestClassUnloadingArguments 30 */ 31 32 import java.util.*; 33 34 import jdk.test.lib.Asserts; 35 import jdk.test.lib.process.ProcessTools; 36 import jdk.test.lib.process.OutputAnalyzer; 37 38 public class TestClassUnloadingArguments { 39 40 public static void testWith(String msg, boolean cu, boolean cuConc, String... args) throws Exception { 41 String[] cmds = Arrays.copyOf(args, args.length + 2); 42 cmds[args.length] = "-XX:+PrintFlagsFinal"; 43 cmds[args.length + 1] = "-version"; 44 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds); 45 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 46 output.shouldHaveExitValue(0); 47 output.shouldContain("ClassUnloading"); 48 output.shouldContain("ClassUnloadingWithConcurrentMark"); 49 50 Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloading.+?= (.+?) (.+?)", 2), 51 Boolean.toString(cu), 52 msg + ", but got wrong ClassUnloading"); 53 Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloadingWithConcurrentMark.+?= (.+?) (.+?)", 2), 54 Boolean.toString(cuConc), 55 msg + ", but got wrong ClassUnloadingWithConcurrentMark"); 56 } 57 58 public static void main(String[] args) throws Exception { 59 testDefaultGC(); 60 testShenandoah(); 61 } 62 63 public static void testDefaultGC() throws Exception { 64 testWith("Default GC should have class unloading enabled", 65 true, true); 66 67 testWith("Default GC should disable everything", 68 false, false, 69 "-XX:-ClassUnloading"); 70 71 testWith("Default GC should disable conc unload", 72 true, false, 73 "-XX:-ClassUnloadingWithConcurrentMark"); 74 75 testWith("Default GC should not let conc unload to be enabled separately", 76 false, false, 77 "-XX:-ClassUnloading", 78 "-XX:+ClassUnloadingWithConcurrentMark"); 79 } 80 81 public static void testShenandoah() throws Exception { 82 testWith("Shenandoah GC should have class unloading enabled", 83 true, false, 84 "-XX:+UnlockExperimentalVMOptions", 85 "-XX:+UseShenandoahGC"); 86 87 testWith("Shenandoah GC should disable everything", 88 false, false, 89 "-XX:+UnlockExperimentalVMOptions", 90 "-XX:+UseShenandoahGC", 91 "-XX:-ClassUnloading"); 92 93 testWith("Shenandoah GC should enable conc unload", 94 true, true, 95 "-XX:+UnlockExperimentalVMOptions", 96 "-XX:+UseShenandoahGC", 97 "-XX:+ClassUnloadingWithConcurrentMark"); 98 99 testWith("Shenandoah GC should not let conc unload to be enabled separately", 100 false, false, 101 "-XX:+UnlockExperimentalVMOptions", 102 "-XX:+UseShenandoahGC", 103 "-XX:-ClassUnloading", 104 "-XX:+ClassUnloadingWithConcurrentMark"); 105 } 106 107 }