1 /*
2 * Copyright (c) 2003, 2013, 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 sun.misc;
27
28 import java.lang.annotation.Annotation;
29 import java.lang.reflect.Executable;
30 import java.security.AccessControlContext;
31 import java.util.Map;
32 import java.util.function.Function;
33
34 import sun.reflect.ConstantPool;
35 import sun.reflect.annotation.AnnotationType;
36 import sun.nio.ch.Interruptible;
37
38 public interface JavaLangAccess {
39 /** Return the constant pool for a class. */
40 ConstantPool getConstantPool(Class<?> klass);
41
42 /**
43 * Compare-And-Swap the AnnotationType instance corresponding to this class.
44 * (This method only applies to annotation types.)
45 */
46 boolean casAnnotationType(Class<?> klass, AnnotationType oldType, AnnotationType newType);
47
48 /**
49 * Get the AnnotationType instance corresponding to this class.
50 * (This method only applies to annotation types.)
51 */
52 AnnotationType getAnnotationType(Class<?> klass);
53
54 /**
55 * Get the declared annotations for a given class, indexed by their types.
56 */
57 Map<Class<? extends Annotation>, Annotation> getDeclaredAnnotationMap(Class<?> klass);
58
59 /**
60 * Get the array of bytes that is the class-file representation
61 * of this Class' annotations.
62 */
63 byte[] getRawClassAnnotations(Class<?> klass);
64
65 /**
66 * Get the array of bytes that is the class-file representation
67 * of this Class' type annotations.
68 */
69 byte[] getRawClassTypeAnnotations(Class<?> klass);
70
71 /**
72 * Get the array of bytes that is the class-file representation
73 * of this Executable's type annotations.
74 */
75 byte[] getRawExecutableTypeAnnotations(Executable executable);
76
77 /**
78 * Returns the elements of an enum class or null if the
79 * Class object does not represent an enum type;
80 * the result is uncloned, cached, and shared by all callers.
81 */
82 <E extends Enum<E>> E[] getEnumConstantsShared(Class<E> klass);
83
84 /**
85 * If given Class represents a generic class or interface, then the result of
86 * applying given function to the Class object is returned, otherwise null.
87 * The result is cached in per-Class map using identity of given key.
88 */
89 <D> D getGenericDerivative(Class<?> clazz, Object key,
90 Function<Class<?>, ? extends D> function);
91
92 /** Set thread's blocker field. */
93 void blockedOn(Thread t, Interruptible b);
94
95 /**
96 * Registers a shutdown hook.
97 *
98 * It is expected that this method with registerShutdownInProgress=true
99 * is only used to register DeleteOnExitHook since the first file
100 * may be added to the delete on exit list by the application shutdown
101 * hooks.
102 *
103 * @params slot the slot in the shutdown hook array, whose element
104 * will be invoked in order during shutdown
105 * @params registerShutdownInProgress true to allow the hook
106 * to be registered even if the shutdown is in progress.
107 * @params hook the hook to be registered
108 *
109 * @throw IllegalStateException if shutdown is in progress and
110 * the slot is not valid to register.
111 */
112 void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);
113
114 /**
115 * Returns the number of stack frames represented by the given throwable.
116 */
117 int getStackTraceDepth(Throwable t);
118
119 /**
120 * Returns the ith StackTraceElement for the given throwable.
121 */
122 StackTraceElement getStackTraceElement(Throwable t, int i);
123
124 /**
125 * Returns a new string backed by the provided character array. The
126 * character array is not copied and must never be modified after the
127 * String is created, in order to fulfill String's contract.
128 *
129 * @param chars the character array to back the string
130 * @return a newly created string whose content is the character array
131 */
132 String newStringUnsafe(char[] chars);
133
134 /**
135 * Returns a new Thread with the given Runnable and an
136 * inherited AccessControlContext.
137 */
138 Thread newThreadWithAcc(Runnable target, AccessControlContext acc);
139
140 /**
141 * Invokes the finalize method of the given object.
142 */
143 void invokeFinalize(Object o) throws Throwable;
144
145 /**
146 * Invokes Long.formatUnsignedLong(long val, int shift, char[] buf, int offset, int len)
147 */
148 void formatUnsignedLong(long val, int shift, char[] buf, int offset, int len);
149
150 /**
151 * Invokes Integer.formatUnsignedInt(long val, int shift, char[] buf, int offset, int len)
152 */
153 void formatUnsignedInt(int val, int shift, char[] buf, int offset, int len);
154 }