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 jdk.internal.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
33 import jdk.internal.vm.annotation.ForceInline;
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 /** Set thread's blocker field. */
85 void blockedOn(Thread t, Interruptible b);
86
87 /**
88 * Registers a shutdown hook.
89 *
90 * It is expected that this method with registerShutdownInProgress=true
91 * is only used to register DeleteOnExitHook since the first file
92 * may be added to the delete on exit list by the application shutdown
93 * hooks.
94 *
95 * @param slot the slot in the shutdown hook array, whose element
96 * will be invoked in order during shutdown
97 * @param registerShutdownInProgress true to allow the hook
98 * to be registered even if the shutdown is in progress.
99 * @param hook the hook to be registered
100 *
101 * @throws IllegalStateException if shutdown is in progress and
102 * the slot is not valid to register.
103 */
104 void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);
105
106 /**
107 * Returns a new string backed by the provided character array. The
108 * character array is not copied and must never be modified after the
109 * String is created, in order to fulfill String's contract.
110 *
111 * @param chars the character array to back the string
112 * @return a newly created string whose content is the character array
113 */
114 String newStringUnsafe(char[] chars);
115
116 String newStringUnsafe(byte[] bytes, byte coder);
117
118 byte stringInitialCoder();
119
120 byte stringMixCoder(byte coder, String elt);
121
122 byte[] stringStorageFor(int charLen, byte coder);
123
124 void stringGetChars(String src, byte[] dst, int dstIdx, byte coder);
125
126 /**
127 * Returns a new Thread with the given Runnable and an
128 * inherited AccessControlContext.
129 */
130 Thread newThreadWithAcc(Runnable target, AccessControlContext acc);
131
132 /**
133 * Invokes the finalize method of the given object.
134 */
135 void invokeFinalize(Object o) throws Throwable;
136
137 /**
138 * Invokes Long.fastUUID
139 */
140 String fastUUID(long lsb, long msb);
141 }