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 java.security.AccessControlContext;
  29 import sun.reflect.ConstantPool;
  30 import sun.reflect.annotation.AnnotationType;
  31 import sun.nio.ch.Interruptible;
  32 
  33 public interface JavaLangAccess {
  34     /** Return the constant pool for a class. */
  35     ConstantPool getConstantPool(Class klass);
  36 
  37     /**
  38      * Set the AnnotationType instance corresponding to this class.
  39      * (This method only applies to annotation types.)
  40      */
  41     void setAnnotationType(Class klass, AnnotationType annotationType);
  42 
  43     /**
  44      * Get the AnnotationType instance corresponding to this class.
  45      * (This method only applies to annotation types.)
  46      */
  47     AnnotationType getAnnotationType(Class klass);
  48 
  49     /**
  50      * Returns the elements of an enum class or null if the
  51      * Class object does not represent an enum type;
  52      * the result is uncloned, cached, and shared by all callers.
  53      */
  54     <E extends Enum<E>> E[] getEnumConstantsShared(Class<E> klass);
  55 
  56     /** Set thread's blocker field. */
  57     void blockedOn(Thread t, Interruptible b);
  58 
  59     /**
  60      * Registers a shutdown hook.
  61      *
  62      * It is expected that this method with registerShutdownInProgress=true
  63      * is only used to register DeleteOnExitHook since the first file
  64      * may be added to the delete on exit list by the application shutdown
  65      * hooks.
  66      *
  67      * @params slot  the slot in the shutdown hook array, whose element
  68      *               will be invoked in order during shutdown
  69      * @params registerShutdownInProgress true to allow the hook
  70      *               to be registered even if the shutdown is in progress.
  71      * @params hook  the hook to be registered
  72      *
  73      * @throw IllegalStateException if shutdown is in progress and
  74      *          the slot is not valid to register.
  75      */
  76     void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);
  77 
  78     /**
  79      * Returns the number of stack frames represented by the given throwable.
  80      */
  81     int getStackTraceDepth(Throwable t);
  82 
  83     /**
  84      * Returns the ith StackTraceElement for the given throwable.
  85      */
  86     StackTraceElement getStackTraceElement(Throwable t, int i);
  87 
  88     /**
  89      * Returns the murmur hash value for the specified String.
  90      */
  91     int getStringHash32(String string);
  92 
  93     /**
  94      * Returns a new Thread with the given Runnable and an
  95      * inherited AccessControlContext.
  96      */
  97     Thread newThreadWithAcc(Runnable target, AccessControlContext acc);
  98 
  99     /**
 100      * Invokes the finalize method of the given object.
 101      */
 102     void invokeFinalize(Object o) throws Throwable;
 103 }