jdk/src/share/classes/sun/misc/JavaLangAccess.java
author chegar
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/*
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 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package sun.misc;
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import java.lang.annotation.Annotation;
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import java.lang.reflect.Executable;
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import java.security.AccessControlContext;
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import sun.reflect.ConstantPool;
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import sun.reflect.annotation.AnnotationType;
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import sun.nio.ch.Interruptible;
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public interface JavaLangAccess {
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    /** Return the constant pool for a class. */
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    ConstantPool getConstantPool(Class<?> klass);
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    /**
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     * Compare-And-Swap the AnnotationType instance corresponding to this class.
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     * (This method only applies to annotation types.)
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     */
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    boolean casAnnotationType(Class<?> klass, AnnotationType oldType, AnnotationType newType);
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    /**
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     * Get the AnnotationType instance corresponding to this class.
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     * (This method only applies to annotation types.)
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     */
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    AnnotationType getAnnotationType(Class<?> klass);
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    /**
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     * Get the array of bytes that is the class-file representation
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     * of this Class' annotations.
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     */
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    byte[] getRawClassAnnotations(Class<?> klass);
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    /**
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     * Get the array of bytes that is the class-file representation
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     * of this Class' type annotations.
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     */
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    byte[] getRawClassTypeAnnotations(Class<?> klass);
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    /**
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     * Get the array of bytes that is the class-file representation
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     * of this Executable's type annotations.
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     */
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    byte[] getRawExecutableTypeAnnotations(Executable executable);
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    /**
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     * Returns the elements of an enum class or null if the
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     * Class object does not represent an enum type;
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     * the result is uncloned, cached, and shared by all callers.
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     */
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    <E extends Enum<E>> E[] getEnumConstantsShared(Class<E> klass);
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    /** Set thread's blocker field. */
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    void blockedOn(Thread t, Interruptible b);
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    /**
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     * Registers a shutdown hook.
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     *
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     * It is expected that this method with registerShutdownInProgress=true
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     * is only used to register DeleteOnExitHook since the first file
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     * may be added to the delete on exit list by the application shutdown
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     * hooks.
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     *
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     * @params slot  the slot in the shutdown hook array, whose element
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     *               will be invoked in order during shutdown
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     * @params registerShutdownInProgress true to allow the hook
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     *               to be registered even if the shutdown is in progress.
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     * @params hook  the hook to be registered
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     *
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     * @throw IllegalStateException if shutdown is in progress and
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     *          the slot is not valid to register.
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     */
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    void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);
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    /**
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     * Returns the number of stack frames represented by the given throwable.
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     */
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    int getStackTraceDepth(Throwable t);
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    /**
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     * Returns the ith StackTraceElement for the given throwable.
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     */
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    StackTraceElement getStackTraceElement(Throwable t, int i);
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    /**
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     * Returns a new string backed by the provided character array. The
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     * character array is not copied and must never be modified after the
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     * String is created, in order to fulfill String's contract.
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     *
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     * @param chars the character array to back the string
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     * @return a newly created string whose content is the character array
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     */
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    String newStringUnsafe(char[] chars);
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    /**
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     * Returns a new Thread with the given Runnable and an
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     * inherited AccessControlContext.
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     */
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    Thread newThreadWithAcc(Runnable target, AccessControlContext acc);
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}