1 /*
2 * Copyright (c) 2015, 2018, 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
54
55 public class BootLoader {
56 private BootLoader() { }
57
58 // The unnamed module for the boot loader
59 private static final Module UNNAMED_MODULE;
60 private static final String JAVA_HOME = StaticProperty.javaHome();
61
62 static {
63 UNNAMED_MODULE = SharedSecrets.getJavaLangAccess().defineUnnamedModule(null);
64 setBootLoaderUnnamedModule0(UNNAMED_MODULE);
65 }
66
67 // ServiceCatalog for the boot class loader
68 private static final ServicesCatalog SERVICES_CATALOG = ServicesCatalog.create();
69
70 // ClassLoaderValue map for the boot class loader
71 private static final ConcurrentHashMap<?, ?> CLASS_LOADER_VALUE_MAP
72 = new ConcurrentHashMap<>();
73
74 /**
75 * Returns the unnamed module for the boot loader.
76 */
77 public static Module getUnnamedModule() {
78 return UNNAMED_MODULE;
79 }
80
81 /**
82 * Returns the ServiceCatalog for modules defined to the boot class loader.
83 */
84 public static ServicesCatalog getServicesCatalog() {
85 return SERVICES_CATALOG;
86 }
87
88 /**
89 * Returns the ClassLoaderValue map for the boot class loader.
90 */
91 public static ConcurrentHashMap<?, ?> getClassLoaderValueMap() {
92 return CLASS_LOADER_VALUE_MAP;
93 }
94
95 /**
96 * Returns {@code true} if there is a class path associated with the
97 * BootLoader.
98 */
99 public static boolean hasClassPath() {
100 return ClassLoaders.bootLoader().hasClassPath();
101 }
102
103 /**
104 * Registers a module with this class loader so that its classes
105 * (and resources) become visible via this class loader.
106 */
107 public static void loadModule(ModuleReference mref) {
108 ClassLoaders.bootLoader().loadModule(mref);
109 }
110
111 /**
112 * Loads the Class object with the given name defined to the boot loader.
113 */
114 public static Class<?> loadClassOrNull(String name) {
115 return ClassLoaders.bootLoader().loadClassOrNull(name);
116 }
117
118 /**
119 * Loads the Class object with the given name in the given module
120 * defined to the boot loader. Returns {@code null} if not found.
121 */
122 public static Class<?> loadClass(Module module, String name) {
123 Class<?> c = loadClassOrNull(name);
124 if (c != null && c.getModule() == module) {
125 return c;
126 } else {
127 return null;
128 }
129 }
130
131 /**
132 * Loads a library from the system path.
133 */
134 public static void loadLibrary(String library) {
135 if (System.getSecurityManager() == null) {
136 SharedSecrets.getJavaLangAccess().loadLibrary(BootLoader.class, library);
137 } else {
138 AccessController.doPrivileged(
139 new java.security.PrivilegedAction<>() {
140 public Void run() {
141 SharedSecrets.getJavaLangAccess().loadLibrary(BootLoader.class, library);
142 return null;
143 }
144 });
145 }
146 }
147
148 /**
149 * Returns a URL to a resource in a module defined to the boot loader.
150 */
151 public static URL findResource(String mn, String name) throws IOException {
152 return ClassLoaders.bootLoader().findResource(mn, name);
153 }
154
155 /**
156 * Returns an input stream to a resource in a module defined to the
157 * boot loader.
158 */
159 public static InputStream findResourceAsStream(String mn, String name)
160 throws IOException
161 {
162 return ClassLoaders.bootLoader().findResourceAsStream(mn, name);
163 }
164
165 /**
166 * Returns the URL to the given resource in any of the modules
167 * defined to the boot loader and the boot class path.
168 */
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1 /*
2 * Copyright (c) 2015, 2020, 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
54
55 public class BootLoader {
56 private BootLoader() { }
57
58 // The unnamed module for the boot loader
59 private static final Module UNNAMED_MODULE;
60 private static final String JAVA_HOME = StaticProperty.javaHome();
61
62 static {
63 UNNAMED_MODULE = SharedSecrets.getJavaLangAccess().defineUnnamedModule(null);
64 setBootLoaderUnnamedModule0(UNNAMED_MODULE);
65 }
66
67 // ServiceCatalog for the boot class loader
68 private static final ServicesCatalog SERVICES_CATALOG = ServicesCatalog.create();
69
70 // ClassLoaderValue map for the boot class loader
71 private static final ConcurrentHashMap<?, ?> CLASS_LOADER_VALUE_MAP
72 = new ConcurrentHashMap<>();
73
74 // native libraries loaded by the boot class loader
75 private static final NativeLibraries NATIVE_LIBS
76 = new NativeLibraries(null);
77
78 /**
79 * Returns the unnamed module for the boot loader.
80 */
81 public static Module getUnnamedModule() {
82 return UNNAMED_MODULE;
83 }
84
85 /**
86 * Returns the ServiceCatalog for modules defined to the boot class loader.
87 */
88 public static ServicesCatalog getServicesCatalog() {
89 return SERVICES_CATALOG;
90 }
91
92 /**
93 * Returns the ClassLoaderValue map for the boot class loader.
94 */
95 public static ConcurrentHashMap<?, ?> getClassLoaderValueMap() {
96 return CLASS_LOADER_VALUE_MAP;
97 }
98
99 /**
100 * Returns NativeLibraries for the boot class loader.
101 */
102 public static NativeLibraries getNativeLibraries() {
103 return NATIVE_LIBS;
104 }
105
106 /**
107 * Returns {@code true} if there is a class path associated with the
108 * BootLoader.
109 */
110 public static boolean hasClassPath() {
111 return ClassLoaders.bootLoader().hasClassPath();
112 }
113
114 /**
115 * Registers a module with this class loader so that its classes
116 * (and resources) become visible via this class loader.
117 */
118 public static void loadModule(ModuleReference mref) {
119 ClassLoaders.bootLoader().loadModule(mref);
120 }
121
122 /**
123 * Loads the Class object with the given name defined to the boot loader.
124 */
125 public static Class<?> loadClassOrNull(String name) {
126 return ClassLoaders.bootLoader().loadClassOrNull(name);
127 }
128
129 /**
130 * Loads the Class object with the given name in the given module
131 * defined to the boot loader. Returns {@code null} if not found.
132 */
133 public static Class<?> loadClass(Module module, String name) {
134 Class<?> c = loadClassOrNull(name);
135 if (c != null && c.getModule() == module) {
136 return c;
137 } else {
138 return null;
139 }
140 }
141
142 /**
143 * Returns a URL to a resource in a module defined to the boot loader.
144 */
145 public static URL findResource(String mn, String name) throws IOException {
146 return ClassLoaders.bootLoader().findResource(mn, name);
147 }
148
149 /**
150 * Returns an input stream to a resource in a module defined to the
151 * boot loader.
152 */
153 public static InputStream findResourceAsStream(String mn, String name)
154 throws IOException
155 {
156 return ClassLoaders.bootLoader().findResourceAsStream(mn, name);
157 }
158
159 /**
160 * Returns the URL to the given resource in any of the modules
161 * defined to the boot loader and the boot class path.
162 */
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