src/java.base/share/classes/jdk/internal/access/JavaLangAccess.java
changeset 52427 3c6aa484536c
parent 51772 5432cebf6627
child 55693 9a97b1393e72
child 57148 1a13164f3f4f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/jdk/internal/access/JavaLangAccess.java	Tue Nov 06 10:01:16 2018 -0800
@@ -0,0 +1,314 @@
+/*
+ * Copyright (c) 2003, 2018, 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.access;
+
+import java.lang.annotation.Annotation;
+import java.lang.module.ModuleDescriptor;
+import java.lang.reflect.Executable;
+import java.lang.reflect.Method;
+import java.net.URI;
+import java.nio.charset.CharacterCodingException;
+import java.nio.charset.Charset;
+import java.security.AccessControlContext;
+import java.security.ProtectionDomain;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Stream;
+
+import jdk.internal.module.ServicesCatalog;
+import jdk.internal.reflect.ConstantPool;
+import sun.reflect.annotation.AnnotationType;
+import sun.nio.ch.Interruptible;
+
+public interface JavaLangAccess {
+
+    /**
+     * Returns the list of {@code Method} objects for the declared public
+     * methods of this class or interface that have the specified method name
+     * and parameter types.
+     */
+    List<Method> getDeclaredPublicMethods(Class<?> klass, String name, Class<?>... parameterTypes);
+
+    /**
+     * Return the constant pool for a class.
+     */
+    ConstantPool getConstantPool(Class<?> klass);
+
+    /**
+     * Compare-And-Set 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 current thread's blocker field.
+     */
+    void blockedOn(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 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 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);
+
+    /**
+     * Defines a class with the given name to a class loader.
+     */
+    Class<?> defineClass(ClassLoader cl, String name, byte[] b, ProtectionDomain pd, String source);
+
+    /**
+     * Returns a class loaded by the bootstrap class loader.
+     */
+    Class<?> findBootstrapClassOrNull(ClassLoader cl, String name);
+
+    /**
+     * 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);
+
+    /**
+     * Record the non-exported packages of the modules in the given layer
+     */
+    void addNonExportedPackages(ModuleLayer layer);
+
+    /**
+     * Invalidate package access cache
+     */
+    void invalidatePackageAccessCache();
+
+    /**
+     * Defines a new module to the Java virtual machine. The module
+     * is defined to the given class loader.
+     *
+     * The URI is for information purposes only, it can be {@code null}.
+     */
+    Module defineModule(ClassLoader loader, ModuleDescriptor descriptor, URI uri);
+
+    /**
+     * Defines the unnamed module for the given class loader.
+     */
+    Module defineUnnamedModule(ClassLoader loader);
+
+    /**
+     * Updates the readability so that module m1 reads m2. The new read edge
+     * does not result in a strong reference to m2 (m2 can be GC'ed).
+     *
+     * This method is the same as m1.addReads(m2) but without a permission check.
+     */
+    void addReads(Module m1, Module m2);
+
+    /**
+     * Updates module m to read all unnamed modules.
+     */
+    void addReadsAllUnnamed(Module m);
+
+    /**
+     * Updates module m1 to export a package to module m2. The export does
+     * not result in a strong reference to m2 (m2 can be GC'ed).
+     */
+    void addExports(Module m1, String pkg, Module m2);
+
+    /**
+     * Updates a module m to export a package to all unnamed modules.
+     */
+    void addExportsToAllUnnamed(Module m, String pkg);
+
+    /**
+     * Updates module m1 to open a package to module m2. Opening the
+     * package does not result in a strong reference to m2 (m2 can be GC'ed).
+     */
+    void addOpens(Module m1, String pkg, Module m2);
+
+    /**
+     * Updates module m to open a package to all unnamed modules.
+     */
+    void addOpensToAllUnnamed(Module m, String pkg);
+
+    /**
+     * Updates module m to open all packages returned by the given iterator.
+     */
+    void addOpensToAllUnnamed(Module m, Iterator<String> packages);
+
+    /**
+     * Updates module m to use a service.
+     */
+    void addUses(Module m, Class<?> service);
+
+    /**
+     * Returns true if module m reflectively exports a package to other
+     */
+    boolean isReflectivelyExported(Module module, String pn, Module other);
+
+    /**
+     * Returns true if module m reflectively opens a package to other
+     */
+    boolean isReflectivelyOpened(Module module, String pn, Module other);
+
+    /**
+     * Returns the ServicesCatalog for the given Layer.
+     */
+    ServicesCatalog getServicesCatalog(ModuleLayer layer);
+
+    /**
+     * Returns an ordered stream of layers. The first element is the
+     * given layer, the remaining elements are its parents, in DFS order.
+     */
+    Stream<ModuleLayer> layers(ModuleLayer layer);
+
+    /**
+     * Returns a stream of the layers that have modules defined to the
+     * given class loader.
+     */
+    Stream<ModuleLayer> layers(ClassLoader loader);
+
+    /**
+     * Constructs a new {@code String} by decoding the specified subarray of
+     * bytes using the specified {@linkplain java.nio.charset.Charset charset}.
+     *
+     * The caller of this method shall relinquish and transfer the ownership of
+     * the byte array to the callee since the later will not make a copy.
+     *
+     * @param bytes the byte array source
+     * @param cs the Charset
+     * @return the newly created string
+     * @throws CharacterCodingException for malformed or unmappable bytes
+     */
+    String newStringNoRepl(byte[] bytes, Charset cs) throws CharacterCodingException;
+
+    /**
+     * Encode the given string into a sequence of bytes using the specified Charset.
+     *
+     * This method avoids copying the String's internal representation if the input
+     * is ASCII.
+     *
+     * This method throws CharacterCodingException instead of replacing when
+     * malformed input or unmappable characters are encountered.
+     *
+     * @param s the string to encode
+     * @param cs the charset
+     * @return the encoded bytes
+     * @throws CharacterCodingException for malformed input or unmappable characters
+     */
+    byte[] getBytesNoRepl(String s, Charset cs) throws CharacterCodingException;
+
+    /**
+     * Returns a new string by decoding from the given utf8 bytes array.
+     *
+     * @param off the index of the first byte to decode
+     * @param len the number of bytes to decode
+     * @return the newly created string
+     * @throws IllegalArgumentException for malformed or unmappable bytes.
+     */
+    String newStringUTF8NoRepl(byte[] bytes, int off, int len);
+
+    /**
+     * Encode the given string into a sequence of bytes using utf8.
+     *
+     * @param s the string to encode
+     * @return the encoded bytes in utf8
+     * @throws IllegalArgumentException for malformed surrogates
+     */
+    byte[] getBytesUTF8NoRepl(String s);
+
+    /**
+     * Set the cause of Throwable
+     * @param cause set t's cause to new value
+     */
+    void setCause(Throwable t, Throwable cause);
+}