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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 import java.io.File;
27 import java.io.FileInputStream;
28 import java.io.IOException;
29 import java.io.InputStream;
30 import java.lang.reflect.InvocationTargetException;
31 import java.lang.reflect.Layer;
32 import java.lang.reflect.Method;
33
34 /*
35 * @test 8163162
36 * @summary Checks that LazyLoggers are returned for System.Logger instances
37 * created by modules in the platform class loader.
38 * @modules java.base/java.lang:open
39 * @build systempkg.log.SystemLoggerAccessor SystemLoggerInPlatformLoader
40 * @run main/othervm SystemLoggerInPlatformLoader
41 * @author danielfuchs
42 */
43 public class SystemLoggerInPlatformLoader {
44
45 static final class PlatformClassLoaderChild extends ClassLoader {
46 private PlatformClassLoaderChild() {
47 super(ClassLoader.getPlatformClassLoader());
48 }
49 public Class<?> definePlatformClass(String name) throws IOException {
50 String testClasses = System.getProperty("test.classes", "./build/classes");
51 String fname = name.replace('.', '/').concat(".class");
52 try (InputStream is = new FileInputStream(new File(testClasses, fname))) {
53 byte[] b = is.readAllBytes();
54 ClassLoader parent = getParent();
55 try {
56 Method m = ClassLoader.class.getDeclaredMethod("defineClass",
57 String.class, byte[].class, int.class, int.class);
58 m.setAccessible(true);
59 return (Class<?>)m.invoke(parent, name, b, 0, b.length);
60 } catch (NoSuchMethodException
61 | IllegalAccessException
62 | InvocationTargetException ex) {
63 throw new IOException(ex);
64 }
65 }
66 }
67 static final PlatformClassLoaderChild INSTANCE = new PlatformClassLoaderChild();
68 static Class<?> loadLoggerAccessor() throws IOException {
69 return INSTANCE.definePlatformClass("systempkg.log.SystemLoggerAccessor");
70 }
71 }
72
73 static final Class<?> LOGGER_ACCESSOR_CLASS;
74 static {
75 try {
76 LOGGER_ACCESSOR_CLASS = PlatformClassLoaderChild.loadLoggerAccessor();
77 ClassLoader platformCL = ClassLoader.getPlatformClassLoader();
78 if (LOGGER_ACCESSOR_CLASS.getClassLoader() != platformCL) {
79 throw new ExceptionInInitializerError(
80 "Could not load accessor class in platform class loader: "
81 + LOGGER_ACCESSOR_CLASS.getClassLoader());
82 }
83 } catch (IOException ex) {
84 throw new ExceptionInInitializerError(ex);
85 }
86 }
87
88 // Returns a system logger created on behalf of a class loaded by the
89 // Platform ClassLoader
90 static System.Logger getSystemLogger(String name) {
91 try {
92 return (System.Logger)LOGGER_ACCESSOR_CLASS.getMethod(
93 "getSystemLogger", String.class).invoke(null, name);
94 } catch (NoSuchMethodException
95 | IllegalAccessException
96 | InvocationTargetException ex) {
97 throw new RuntimeException("Failed to invoke LoggerAccessor.getJULLogger", ex);
98 }
99 }
100
101 public static void main(String[] args) {
102 System.Logger splogger = getSystemLogger("bar"); // for a platform class
103 System.Logger slogger = System.getLogger("bar"); // for an application class
104 if (slogger == splogger) {
105 throw new RuntimeException("Same loggers");
106 }
107 Class sploggerType = splogger.getClass();
108 System.out.println("splogger: " + sploggerType);
109 boolean simleConsoleOnly = !Layer.boot().findModule("java.logging").isPresent();
110
111 if (simleConsoleOnly) {
112 if (!sploggerType.getSimpleName().equals("SimpleConsoleLogger")) {
113 throw new RuntimeException(sploggerType.getSimpleName()
114 + ": unexpected class for splogger"
115 + " (expected a simple console logger class)");
116 }
117 } else {
118 if (!sploggerType.getSimpleName().equals("JdkLazyLogger")) {
119 throw new RuntimeException(sploggerType.getSimpleName()
120 + ": unexpected class for splogger"
121 + " (expected a lazy logger for a platform class)");
122 }
123 Class sloggerType = slogger.getClass();
124 System.out.println("slogger: " + sloggerType);
125 if (sloggerType.equals(sploggerType)) {
126 throw new RuntimeException(sloggerType
127 + ": unexpected class for slogger"
128 + " (a lazy logger was not expected"
129 + " for a non platform class)");
130 }
131 }
132 }
133 }