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 sun.reflect.ConstantPool; 31 import sun.reflect.annotation.AnnotationType; 32 import sun.nio.ch.Interruptible; 33 34 public interface JavaLangAccess { 35 /** Return the constant pool for a class. */ 36 ConstantPool getConstantPool(Class<?> klass); 37 38 /** 39 * Set the AnnotationType instance corresponding to this class. 40 * (This method only applies to annotation types.) 41 */ 42 void setAnnotationType(Class<?> klass, AnnotationType annotationType); 43 44 /** 45 * Get the AnnotationType instance corresponding to this class. 46 * (This method only applies to annotation types.) 47 */ 48 AnnotationType getAnnotationType(Class<?> klass); 49 50 /** 51 * Get the array of bytes that is the class-file representation 52 * of this Class' annotations. 53 */ 54 byte[] getRawClassAnnotations(Class<?> klass); 55 56 /** 57 * Get the array of bytes that is the class-file representation 58 * of this Class' type annotations. 59 */ 60 byte[] getRawClassTypeAnnotations(Class<?> klass); 61 62 /** 63 * Get the array of bytes that is the class-file representation 64 * of this Executable's type annotations. 65 */ 66 byte[] getRawExecutableTypeAnnotations(Executable executable); 67 68 /** 69 * Returns the elements of an enum class or null if the 70 * Class object does not represent an enum type; 71 * the result is uncloned, cached, and shared by all callers. 72 */ 73 <E extends Enum<E>> E[] getEnumConstantsShared(Class<E> klass); 74 75 /** Set thread's blocker field. */ 76 void blockedOn(Thread t, Interruptible b); 77 78 /** 79 * Registers a shutdown hook. 80 * 81 * It is expected that this method with registerShutdownInProgress=true 82 * is only used to register DeleteOnExitHook since the first file 83 * may be added to the delete on exit list by the application shutdown 84 * hooks. 85 * 86 * @params slot the slot in the shutdown hook array, whose element 87 * will be invoked in order during shutdown 88 * @params registerShutdownInProgress true to allow the hook 89 * to be registered even if the shutdown is in progress. 90 * @params hook the hook to be registered 91 * 92 * @throw IllegalStateException if shutdown is in progress and 93 * the slot is not valid to register. 94 */ 95 void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook); 96 97 /** 98 * Returns the number of stack frames represented by the given throwable. 99 */ 100 int getStackTraceDepth(Throwable t); 101 102 /** 103 * Returns the ith StackTraceElement for the given throwable. 104 */ 105 StackTraceElement getStackTraceElement(Throwable t, int i); 106 107 /** 108 * Returns a new string backed by the provided character array. The 109 * character array is not copied and must never be modified after the 110 * String is created, in order to fulfill String's contract. 111 * 112 * @param chars the character array to back the string 113 * @return a newly created string whose content is the character array 114 */ 115 String newStringUnsafe(char[] chars); 116 }