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