1 /* 2 * Copyright (c) 2003, 2006, 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 sun.reflect.ConstantPool; 29 import sun.reflect.annotation.AnnotationType; 30 import sun.nio.ch.Interruptible; 31 32 public interface JavaLangAccess { 33 /** Return the constant pool for a class. */ 34 ConstantPool getConstantPool(Class klass); 35 36 /** 37 * Set the AnnotationType instance corresponding to this class. 38 * (This method only applies to annotation types.) 39 */ 40 void setAnnotationType(Class klass, AnnotationType annotationType); 41 42 /** 43 * Get the AnnotationType instance corresponding to this class. 44 * (This method only applies to annotation types.) 45 */ 46 AnnotationType getAnnotationType(Class klass); 47 48 /** 49 * Returns the elements of an enum class or null if the 50 * Class object does not represent an enum type; 51 * the result is uncloned, cached, and shared by all callers. 52 */ 53 <E extends Enum<E>> E[] getEnumConstantsShared(Class<E> klass); 54 55 /** Set thread's blocker field. */ 56 void blockedOn(Thread t, Interruptible b); 57 58 /** 59 * Registers a shutdown hook. 60 * 61 * It is expected that this method with registerShutdownInProgress=true 62 * is only used to register DeleteOnExitHook since the first file 63 * may be added to the delete on exit list by the application shutdown 64 * hooks. 65 * 66 * @params slot the slot in the shutdown hook array, whose element 67 * will be invoked in order during shutdown 68 * @params registerShutdownInProgress true to allow the hook 69 * to be registered even if the shutdown is in progress. 70 * @params hook the hook to be registered 71 * 72 * @throw IllegalStateException if shutdown is in progress and 73 * the slot is not valid to register. 74 */ 75 void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook); 76 77 /** 78 * Returns the number of stack frames represented by the given throwable. 79 */ 80 int getStackTraceDepth(Throwable t); 81 82 /** 83 * Returns the ith StackTraceElement for the given throwable. 84 */ 85 StackTraceElement getStackTraceElement(Throwable t, int i); 86 87 /** 88 * Returns the murmur hash value for the specified String. 89 */ 90 int getStringHash32(String string); 91 }