rev 55686 : 8227587: Add internal privileged System.loadLibrary
Reviewed-by: rriggs, mchung
1 /*
2 * Copyright (c) 2003, 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
23 * questions.
24 */
25
26 package jdk.internal.access;
27
28 import java.lang.annotation.Annotation;
29 import java.lang.module.ModuleDescriptor;
30 import java.lang.reflect.Executable;
31 import java.lang.reflect.Method;
32 import java.net.URI;
33 import java.nio.charset.CharacterCodingException;
34 import java.nio.charset.Charset;
35 import java.security.AccessControlContext;
36 import java.security.ProtectionDomain;
37 import java.util.Iterator;
38 import java.util.List;
39 import java.util.Map;
40 import java.util.concurrent.ConcurrentHashMap;
41 import java.util.stream.Stream;
42
43 import jdk.internal.module.ServicesCatalog;
44 import jdk.internal.reflect.ConstantPool;
45 import sun.reflect.annotation.AnnotationType;
46 import sun.nio.ch.Interruptible;
47
48 public interface JavaLangAccess {
49
50 /**
51 * Returns the list of {@code Method} objects for the declared public
52 * methods of this class or interface that have the specified method name
53 * and parameter types.
54 */
55 List<Method> getDeclaredPublicMethods(Class<?> klass, String name, Class<?>... parameterTypes);
56
57 /**
58 * Return the constant pool for a class.
59 */
60 ConstantPool getConstantPool(Class<?> klass);
61
62 /**
63 * Compare-And-Set the AnnotationType instance corresponding to this class.
64 * (This method only applies to annotation types.)
65 */
66 boolean casAnnotationType(Class<?> klass, AnnotationType oldType, AnnotationType newType);
67
68 /**
69 * Get the AnnotationType instance corresponding to this class.
70 * (This method only applies to annotation types.)
71 */
72 AnnotationType getAnnotationType(Class<?> klass);
73
74 /**
75 * Get the declared annotations for a given class, indexed by their types.
76 */
77 Map<Class<? extends Annotation>, Annotation> getDeclaredAnnotationMap(Class<?> klass);
78
79 /**
80 * Get the array of bytes that is the class-file representation
81 * of this Class' annotations.
82 */
83 byte[] getRawClassAnnotations(Class<?> klass);
84
85 /**
86 * Get the array of bytes that is the class-file representation
87 * of this Class' type annotations.
88 */
89 byte[] getRawClassTypeAnnotations(Class<?> klass);
90
91 /**
92 * Get the array of bytes that is the class-file representation
93 * of this Executable's type annotations.
94 */
95 byte[] getRawExecutableTypeAnnotations(Executable executable);
96
97 /**
98 * Returns the elements of an enum class or null if the
99 * Class object does not represent an enum type;
100 * the result is uncloned, cached, and shared by all callers.
101 */
102 <E extends Enum<E>> E[] getEnumConstantsShared(Class<E> klass);
103
104 /**
105 * Set current thread's blocker field.
106 */
107 void blockedOn(Interruptible b);
108
109 /**
110 * Registers a shutdown hook.
111 *
112 * It is expected that this method with registerShutdownInProgress=true
113 * is only used to register DeleteOnExitHook since the first file
114 * may be added to the delete on exit list by the application shutdown
115 * hooks.
116 *
117 * @param slot the slot in the shutdown hook array, whose element
118 * will be invoked in order during shutdown
119 * @param registerShutdownInProgress true to allow the hook
120 * to be registered even if the shutdown is in progress.
121 * @param hook the hook to be registered
122 *
123 * @throws IllegalStateException if shutdown is in progress and
124 * the slot is not valid to register.
125 */
126 void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);
127
128 /**
129 * Returns a new Thread with the given Runnable and an
130 * inherited AccessControlContext.
131 */
132 Thread newThreadWithAcc(Runnable target, AccessControlContext acc);
133
134 /**
135 * Invokes the finalize method of the given object.
136 */
137 void invokeFinalize(Object o) throws Throwable;
138
139 /**
140 * Returns the ConcurrentHashMap used as a storage for ClassLoaderValue(s)
141 * associated with the given class loader, creating it if it doesn't already exist.
142 */
143 ConcurrentHashMap<?, ?> createOrGetClassLoaderValueMap(ClassLoader cl);
144
145 /**
146 * Defines a class with the given name to a class loader.
147 */
148 Class<?> defineClass(ClassLoader cl, String name, byte[] b, ProtectionDomain pd, String source);
149
150 /**
151 * Returns a class loaded by the bootstrap class loader.
152 */
153 Class<?> findBootstrapClassOrNull(ClassLoader cl, String name);
154
155 /**
156 * Define a Package of the given name and module by the given class loader.
157 */
158 Package definePackage(ClassLoader cl, String name, Module module);
159
160 /**
161 * Invokes Long.fastUUID
162 */
163 String fastUUID(long lsb, long msb);
164
165 /**
166 * Record the non-exported packages of the modules in the given layer
167 */
168 void addNonExportedPackages(ModuleLayer layer);
169
170 /**
171 * Invalidate package access cache
172 */
173 void invalidatePackageAccessCache();
174
175 /**
176 * Defines a new module to the Java virtual machine. The module
177 * is defined to the given class loader.
178 *
179 * The URI is for information purposes only, it can be {@code null}.
180 */
181 Module defineModule(ClassLoader loader, ModuleDescriptor descriptor, URI uri);
182
183 /**
184 * Defines the unnamed module for the given class loader.
185 */
186 Module defineUnnamedModule(ClassLoader loader);
187
188 /**
189 * Updates the readability so that module m1 reads m2. The new read edge
190 * does not result in a strong reference to m2 (m2 can be GC'ed).
191 *
192 * This method is the same as m1.addReads(m2) but without a permission check.
193 */
194 void addReads(Module m1, Module m2);
195
196 /**
197 * Updates module m to read all unnamed modules.
198 */
199 void addReadsAllUnnamed(Module m);
200
201 /**
202 * Updates module m1 to export a package to module m2. The export does
203 * not result in a strong reference to m2 (m2 can be GC'ed).
204 */
205 void addExports(Module m1, String pkg, Module m2);
206
207 /**
208 * Updates a module m to export a package to all unnamed modules.
209 */
210 void addExportsToAllUnnamed(Module m, String pkg);
211
212 /**
213 * Updates module m1 to open a package to module m2. Opening the
214 * package does not result in a strong reference to m2 (m2 can be GC'ed).
215 */
216 void addOpens(Module m1, String pkg, Module m2);
217
218 /**
219 * Updates module m to open a package to all unnamed modules.
220 */
221 void addOpensToAllUnnamed(Module m, String pkg);
222
223 /**
224 * Updates module m to open all packages returned by the given iterator.
225 */
226 void addOpensToAllUnnamed(Module m, Iterator<String> packages);
227
228 /**
229 * Updates module m to use a service.
230 */
231 void addUses(Module m, Class<?> service);
232
233 /**
234 * Returns true if module m reflectively exports a package to other
235 */
236 boolean isReflectivelyExported(Module module, String pn, Module other);
237
238 /**
239 * Returns true if module m reflectively opens a package to other
240 */
241 boolean isReflectivelyOpened(Module module, String pn, Module other);
242
243 /**
244 * Returns the ServicesCatalog for the given Layer.
245 */
246 ServicesCatalog getServicesCatalog(ModuleLayer layer);
247
248 /**
249 * Returns an ordered stream of layers. The first element is the
250 * given layer, the remaining elements are its parents, in DFS order.
251 */
252 Stream<ModuleLayer> layers(ModuleLayer layer);
253
254 /**
255 * Returns a stream of the layers that have modules defined to the
256 * given class loader.
257 */
258 Stream<ModuleLayer> layers(ClassLoader loader);
259
260 /**
261 * Constructs a new {@code String} by decoding the specified subarray of
262 * bytes using the specified {@linkplain java.nio.charset.Charset charset}.
263 *
264 * The caller of this method shall relinquish and transfer the ownership of
265 * the byte array to the callee since the later will not make a copy.
266 *
267 * @param bytes the byte array source
268 * @param cs the Charset
269 * @return the newly created string
270 * @throws CharacterCodingException for malformed or unmappable bytes
271 */
272 String newStringNoRepl(byte[] bytes, Charset cs) throws CharacterCodingException;
273
274 /**
275 * Encode the given string into a sequence of bytes using the specified Charset.
276 *
277 * This method avoids copying the String's internal representation if the input
278 * is ASCII.
279 *
280 * This method throws CharacterCodingException instead of replacing when
281 * malformed input or unmappable characters are encountered.
282 *
283 * @param s the string to encode
284 * @param cs the charset
285 * @return the encoded bytes
286 * @throws CharacterCodingException for malformed input or unmappable characters
287 */
288 byte[] getBytesNoRepl(String s, Charset cs) throws CharacterCodingException;
289
290 /**
291 * Returns a new string by decoding from the given utf8 bytes array.
292 *
293 * @param off the index of the first byte to decode
294 * @param len the number of bytes to decode
295 * @return the newly created string
296 * @throws IllegalArgumentException for malformed or unmappable bytes.
297 */
298 String newStringUTF8NoRepl(byte[] bytes, int off, int len);
299
300 /**
301 * Encode the given string into a sequence of bytes using utf8.
302 *
303 * @param s the string to encode
304 * @return the encoded bytes in utf8
305 * @throws IllegalArgumentException for malformed surrogates
306 */
307 byte[] getBytesUTF8NoRepl(String s);
308
309 /**
310 * Set the cause of Throwable
311 * @param cause set t's cause to new value
312 */
313 void setCause(Throwable t, Throwable cause);
314 }
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