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