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 26 * @bug 6479237 27 * @summary Basic test StackTraceElement with class loader names 28 * @library lib /lib/testlibrary 29 * @build m1/* WithClassLoaderName 30 * @run main/othervm m1/com.app.Main 31 * @run main/othervm WithClassLoaderName 32 */ 33 34 import java.lang.reflect.InvocationTargetException; 35 import java.lang.reflect.Method; 36 import java.net.URL; 37 import java.net.URLClassLoader; 38 import java.nio.file.Path; 39 import java.nio.file.Paths; 40 41 import com.app.Utils; 42 43 public class WithClassLoaderName { 44 private static final String TEST_SRC = System.getProperty("test.src"); 45 private static final String SRC_FILENAME = "WithClassLoaderName.java"; 46 47 private static final Path SRC_DIR = Paths.get(TEST_SRC, "src"); 48 private static final Path CLASSES_DIR = Paths.get("classes"); 49 private static final String THROW_EXCEPTION_CLASS = "p.ThrowException"; 50 51 public static void main(String... args) throws Exception { 52 /* 53 * Test the following frames both have the same class loader name "app" 54 * com.app.Test::test 55 * WithClassLoaderName::test 56 */ 57 Utils.verify(WithClassLoaderName.class, "app", "main", SRC_FILENAME); 58 59 /* 60 * Test StackTraceElement for a class loaded by a named URLClassLoader 61 */ 62 compile(); 63 testURLClassLoader("myloader"); 64 65 // loader name same as application class loader 66 testURLClassLoader("app"); 67 } 68 69 private static void compile() throws Exception { 70 boolean rc = CompilerUtils.compile(SRC_DIR, CLASSES_DIR); 71 if (!rc) { 72 throw new RuntimeException("compilation fails"); 73 } 74 } 75 76 public static void testURLClassLoader(String loaderName) throws Exception { 77 System.err.println("---- test URLClassLoader name: " + loaderName); 78 79 URL[] urls = new URL[] { CLASSES_DIR.toUri().toURL() }; 80 ClassLoader parent = ClassLoader.getSystemClassLoader(); 81 URLClassLoader loader = new URLClassLoader(loaderName, urls, parent); 82 83 Class<?> c = Class.forName(THROW_EXCEPTION_CLASS, true, loader); 84 Method method = c.getMethod("throwError"); 85 try { 86 // invoke p.ThrowException::throwError 87 method.invoke(null); 88 } catch (InvocationTargetException x) { 89 Throwable e = x.getCause(); 90 e.printStackTrace(); 91 92 StackTraceElement[] stes = e.getStackTrace(); 93 StackWalker.StackFrame[] frames = new StackWalker.StackFrame[] { 94 Utils.makeStackFrame(c, "throwError", "ThrowException.java"), 95 Utils.makeStackFrame(WithClassLoaderName.class, "testURLClassLoader", 96 SRC_FILENAME), 97 Utils.makeStackFrame(WithClassLoaderName.class, "main", SRC_FILENAME), 98 }; 99 100 // p.ThrowException.throwError 101 Utils.checkFrame(loaderName, frames[0], stes[0]); 102 // skip reflection frames 103 int i = 1; 104 while (i < stes.length) { 105 String cn = stes[i].getClassName(); 106 if (!cn.startsWith("java.lang.reflect.") && 107 !cn.startsWith("jdk.internal.reflect.")) 108 break; 109 i++; 110 } 111 // WithClassLoaderName.testURLClassLoader 112 Utils.checkFrame("app", frames[1], stes[i]); 113 114 // WithClassLoaderName.main 115 Utils.checkFrame("app", frames[2], stes[i+1]); 116 117 } 118 } 119 120 } 121