/*

 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package jdk.internal.misc;

import java.io.IOException;

import java.lang.annotation.Annotation;

import java.lang.reflect.Executable;

import java.lang.reflect.Layer;

import java.lang.reflect.Method;

import java.lang.reflect.Module;

import java.net.URL;

import java.security.AccessControlContext;

import java.util.Map;

import java.util.concurrent.ConcurrentHashMap;

import java.util.stream.Stream;

import jdk.internal.reflect.ConstantPool;

import sun.reflect.annotation.AnnotationType;

import sun.nio.ch.Interruptible;

public interface JavaLangAccess {

    /**

     * Returns a {@code Method} object that reflects the specified public

     * member method of the given class. Returns {@code null} if the

     * method is not defined.

     */

    Method getMethodOrNull(Class<?> klass, String name, Class<?>... parameterTypes);

    /** Return the constant pool for a class. */

    ConstantPool getConstantPool(Class<?> klass);

    /**

     * Compare-And-Swap the AnnotationType instance corresponding to this class.

     * (This method only applies to annotation types.)

     */

    boolean casAnnotationType(Class<?> klass, AnnotationType oldType, AnnotationType newType);

    /**

     * Get the AnnotationType instance corresponding to this class.

     * (This method only applies to annotation types.)

     */

    AnnotationType getAnnotationType(Class<?> klass);

    /**

     * Get the declared annotations for a given class, indexed by their types.

     */

    Map<Class<? extends Annotation>, Annotation> getDeclaredAnnotationMap(Class<?> klass);

    /**

     * Get the array of bytes that is the class-file representation

     * of this Class' annotations.

     */

    byte[] getRawClassAnnotations(Class<?> klass);

    /**

     * Get the array of bytes that is the class-file representation

     * of this Class' type annotations.

     */

    byte[] getRawClassTypeAnnotations(Class<?> klass);

    /**

     * Get the array of bytes that is the class-file representation

     * of this Executable's type annotations.

     */

    byte[] getRawExecutableTypeAnnotations(Executable executable);

    /**

     * Returns the elements of an enum class or null if the

     * Class object does not represent an enum type;

     * the result is uncloned, cached, and shared by all callers.

     */

    <E extends Enum<E>> E[] getEnumConstantsShared(Class<E> klass);

    /** Set thread's blocker field. */

    void blockedOn(Thread t, Interruptible b);

    /**

     * Registers a shutdown hook.

     *

     * It is expected that this method with registerShutdownInProgress=true

     * is only used to register DeleteOnExitHook since the first file

     * may be added to the delete on exit list by the application shutdown

     * hooks.

     *

     * @param slot  the slot in the shutdown hook array, whose element

     *              will be invoked in order during shutdown

     * @param registerShutdownInProgress true to allow the hook

     *        to be registered even if the shutdown is in progress.

     * @param hook  the hook to be registered

     *

     * @throws IllegalStateException if shutdown is in progress and

     *         the slot is not valid to register.

     */

    void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);

    /**

     * Returns a new string backed by the provided character array. The

     * character array is not copied and must never be modified after the

     * String is created, in order to fulfill String's contract.

     *

     * @param chars the character array to back the string

     * @return a newly created string whose content is the character array

     */

    String newStringUnsafe(char[] chars);

    /**

     * Returns a new Thread with the given Runnable and an

     * inherited AccessControlContext.

     */

    Thread newThreadWithAcc(Runnable target, AccessControlContext acc);

    /**

     * Invokes the finalize method of the given object.

     */

    void invokeFinalize(Object o) throws Throwable;

    /**

     * Returns the boot Layer

     */

    Layer getBootLayer();

    /**

     * Returns the ConcurrentHashMap used as a storage for ClassLoaderValue(s)

     * associated with the given class loader, creating it if it doesn't already exist.

     */

    ConcurrentHashMap<?, ?> createOrGetClassLoaderValueMap(ClassLoader cl);

    /**

     * Returns a class loaded by the bootstrap class loader.

     */

    Class<?> findBootstrapClassOrNull(ClassLoader cl, String name);

    /**

     * Returns a URL to a resource with the given name in a module that is

     * defined to the given class loader.

     */

    URL findResource(ClassLoader cl, String moduleName, String name) throws IOException;

    /**

     * Returns the Packages for the given class loader.

     */

    Stream<Package> packages(ClassLoader cl);

    /**

     * Define a Package of the given name and module by the given class loader.

     */

    Package definePackage(ClassLoader cl, String name, Module module);

    /**

     * Invokes Long.fastUUID

     */

    String fastUUID(long lsb, long msb);

    /**

     * Invalidate package access cache

     */

    void invalidatePackageAccessCache();

}