1 /* 2 * Copyright (c) 2016, 2018, 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 /* 26 * @test ClassLoadUnloadTest 27 * @bug 8142506 28 * @requires vm.opt.final.ClassUnloading 29 * @modules java.base/jdk.internal.misc 30 * @library /test/lib /runtime/testlibrary 31 * @library classes 32 * @build test.Empty 33 * @run driver ClassLoadUnloadTest 34 */ 35 36 import jdk.test.lib.process.ProcessTools; 37 import jdk.test.lib.process.OutputAnalyzer; 38 import java.lang.ref.WeakReference; 39 import java.lang.reflect.Method; 40 import java.util.ArrayList; 41 import java.util.Collections; 42 import java.util.List; 43 44 public class ClassLoadUnloadTest { 45 private static OutputAnalyzer out; 46 private static ProcessBuilder pb; 47 private static class ClassUnloadTestMain { main(String... args)48 public static void main(String... args) throws Exception { 49 String className = "test.Empty"; 50 ClassLoader cl = ClassUnloadCommon.newClassLoader(); 51 Class<?> c = cl.loadClass(className); 52 cl = null; c = null; 53 ClassUnloadCommon.triggerUnloading(); 54 } 55 } 56 checkFor(String... outputStrings)57 static void checkFor(String... outputStrings) throws Exception { 58 out = new OutputAnalyzer(pb.start()); 59 for (String s: outputStrings) { 60 out.shouldContain(s); 61 } 62 out.shouldHaveExitValue(0); 63 } 64 checkAbsent(String... outputStrings)65 static void checkAbsent(String... outputStrings) throws Exception { 66 out = new OutputAnalyzer(pb.start()); 67 for (String s: outputStrings) { 68 out.shouldNotContain(s); 69 } 70 out.shouldHaveExitValue(0); 71 } 72 73 // Use the same command-line heap size setting as ../ClassUnload/UnloadTest.java exec(String... args)74 static ProcessBuilder exec(String... args) throws Exception { 75 List<String> argsList = new ArrayList<>(); 76 Collections.addAll(argsList, args); 77 Collections.addAll(argsList, "-Xmn8m"); 78 Collections.addAll(argsList, "-Dtest.class.path=" + System.getProperty("test.class.path", ".")); 79 Collections.addAll(argsList, ClassUnloadTestMain.class.getName()); 80 return ProcessTools.createJavaProcessBuilder(argsList.toArray(new String[argsList.size()])); 81 } 82 main(String... args)83 public static void main(String... args) throws Exception { 84 85 // -Xlog:class+unload=info 86 pb = exec("-Xlog:class+unload=info"); 87 checkFor("[class,unload]", "unloading class"); 88 89 // -Xlog:class+unload=off 90 pb = exec("-Xlog:class+unload=off"); 91 checkAbsent("[class,unload]"); 92 93 // -XX:+TraceClassUnloading 94 pb = exec("-XX:+TraceClassUnloading"); 95 checkFor("[class,unload]", "unloading class"); 96 97 // -XX:-TraceClassUnloading 98 pb = exec("-XX:-TraceClassUnloading"); 99 checkAbsent("[class,unload]"); 100 101 // -Xlog:class+load=info 102 pb = exec("-Xlog:class+load=info"); 103 checkFor("[class,load]", "java.lang.Object", "source:"); 104 105 // -Xlog:class+load=debug 106 pb = exec("-Xlog:class+load=debug"); 107 checkFor("[class,load]", "java.lang.Object", "source:", "klass:", "super:", "loader:", "bytes:"); 108 109 // -Xlog:class+load=off 110 pb = exec("-Xlog:class+load=off"); 111 checkAbsent("[class,load]"); 112 113 // -XX:+TraceClassLoading 114 pb = exec("-XX:+TraceClassLoading"); 115 checkFor("[class,load]", "java.lang.Object", "source:"); 116 117 // -XX:-TraceClassLoading 118 pb = exec("-XX:-TraceClassLoading"); 119 checkAbsent("[class,load]"); 120 121 // -verbose:class 122 pb = exec("-verbose:class"); 123 checkFor("[class,load]", "java.lang.Object", "source:"); 124 checkFor("[class,unload]", "unloading class"); 125 126 // -Xlog:class+loader+data=trace 127 pb = exec("-Xlog:class+loader+data=trace"); 128 checkFor("[class,loader,data]", "create loader data"); 129 130 } 131 } 132