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 }