1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/*
* @test
* @bug 8163162
* @summary Checks that LazyLoggers are returned for System.Logger instances
* created by modules in the platform class loader.
* @modules java.base/java.lang:open
* @build systempkg.log.SystemLoggerAccessor SystemLoggerInPlatformLoader
* @run main/othervm SystemLoggerInPlatformLoader
* @author danielfuchs
*/
public class SystemLoggerInPlatformLoader {
static final class PlatformClassLoaderChild extends ClassLoader {
private PlatformClassLoaderChild() {
super(ClassLoader.getPlatformClassLoader());
}
public Class<?> definePlatformClass(String name) throws IOException {
String testClasses = System.getProperty("test.classes", "./build/classes");
String fname = name.replace('.', '/').concat(".class");
try (InputStream is = new FileInputStream(new File(testClasses, fname))) {
byte[] b = is.readAllBytes();
ClassLoader parent = getParent();
try {
Method m = ClassLoader.class.getDeclaredMethod("defineClass",
String.class, byte[].class, int.class, int.class);
m.setAccessible(true);
return (Class<?>)m.invoke(parent, name, b, 0, b.length);
} catch (NoSuchMethodException
| IllegalAccessException
| InvocationTargetException ex) {
throw new IOException(ex);
}
}
}
static final PlatformClassLoaderChild INSTANCE = new PlatformClassLoaderChild();
static Class<?> loadLoggerAccessor() throws IOException {
return INSTANCE.definePlatformClass("systempkg.log.SystemLoggerAccessor");
}
}
static final Class<?> LOGGER_ACCESSOR_CLASS;
static {
try {
LOGGER_ACCESSOR_CLASS = PlatformClassLoaderChild.loadLoggerAccessor();
ClassLoader platformCL = ClassLoader.getPlatformClassLoader();
if (LOGGER_ACCESSOR_CLASS.getClassLoader() != platformCL) {
throw new ExceptionInInitializerError(
"Could not load accessor class in platform class loader: "
+ LOGGER_ACCESSOR_CLASS.getClassLoader());
}
} catch (IOException ex) {
throw new ExceptionInInitializerError(ex);
}
}
// Returns a system logger created on behalf of a class loaded by the
// Platform ClassLoader
static System.Logger getSystemLogger(String name) {
try {
return (System.Logger)LOGGER_ACCESSOR_CLASS.getMethod(
"getSystemLogger", String.class).invoke(null, name);
} catch (NoSuchMethodException
| IllegalAccessException
| InvocationTargetException ex) {
throw new RuntimeException("Failed to invoke LoggerAccessor.getJULLogger", ex);
}
}
public static void main(String[] args) {
System.Logger platformLogger = getSystemLogger("bar"); // for a platform class
System.Logger appLogger = System.getLogger("bar"); // for an application class
if (appLogger == platformLogger) {
throw new RuntimeException("Same loggers");
}
Class<?> platformLoggerType = platformLogger.getClass();
System.out.println("platformLogger: " + platformLoggerType);
boolean simpleConsoleOnly = !ModuleLayer.boot().findModule("java.logging").isPresent();
if (simpleConsoleOnly) {
/* Happens if the test is called with custom JDK without java.logging module
or in case usage commandline option --limit-modules java.base */
if (!platformLoggerType.getSimpleName().equals("SimpleConsoleLogger")) {
throw new RuntimeException(platformLoggerType.getSimpleName()
+ ": unexpected class for platform logger"
+ " (expected a simple console logger class)");
}
} else {
if (!platformLoggerType.getSimpleName().equals("JdkLazyLogger")) {
throw new RuntimeException(platformLoggerType.getSimpleName()
+ ": unexpected class for platform logger"
+ " (expected a lazy logger for a platform class)");
}
Class<?> appLoggerType = appLogger.getClass();
System.out.println("appLogger: " + appLoggerType);
if (appLoggerType.equals(platformLoggerType)) {
throw new RuntimeException(appLoggerType
+ ": unexpected class for application logger"
+ " (a lazy logger was not expected"
+ " for a non platform class)");
}
}
}
}
|
