jdk/src/java.base/share/classes/jdk/internal/misc/SharedSecrets.java
8142968: Module System implementation
Summary: Initial integration of JEP 200, JEP 260, JEP 261, and JEP 282
Reviewed-by: alanb, mchung, naoto, rriggs, psandoz, plevart, mullan, ascarpino, vinnie, prr, sherman, dfuchs, mhaupt
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, chris.hegarty@oracle.com, alexandr.scherbatiy@oracle.com, amy.lu@oracle.com, calvin.cheung@oracle.com, daniel.fuchs@oracle.com, erik.joelsson@oracle.com, harold.seigel@oracle.com, jaroslav.bachorik@oracle.com, jean-francois.denise@oracle.com, jan.lahoda@oracle.com, james.laskey@oracle.com, lois.foltan@oracle.com, miroslav.kos@oracle.com, huaming.li@oracle.com, sean.mullan@oracle.com, naoto.sato@oracle.com, masayoshi.okutsu@oracle.com, peter.levart@gmail.com, philip.race@oracle.com, claes.redestad@oracle.com, sergey.bylokhov@oracle.com, alexandre.iline@oracle.com, volker.simonis@gmail.com, staffan.larsen@oracle.com, stuart.marks@oracle.com, semyon.sadetsky@oracle.com, serguei.spitsyn@oracle.com, sundararajan.athijegannathan@oracle.com, valerie.peng@oracle.com, vincent.x.ryan@oracle.com, weijun.wang@oracle.com, yuri.nesterenko@oracle.com, yekaterina.kantserova@oracle.com, alexander.kulyakhtin@oracle.com, felix.yang@oracle.com, andrei.eremeev@oracle.com, frank.yuan@oracle.com, sergei.pikalev@oracle.com, sibabrata.sahoo@oracle.com, tiantian.du@oracle.com, sha.jiang@oracle.com
/*
* Copyright (c) 2002, 2015, 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.lang.module.ModuleDescriptor;
import java.util.jar.JarFile;
import java.io.Console;
import java.io.FileDescriptor;
import java.security.ProtectionDomain;
import java.security.AccessController;
import jdk.internal.misc.Unsafe;
/** A repository of "shared secrets", which are a mechanism for
calling implementation-private methods in another package without
using reflection. A package-private class implements a public
interface and provides the ability to call package-private methods
within that package; the object implementing that interface is
provided through a third package to which access is restricted.
This framework avoids the primary disadvantage of using reflection
for this purpose, namely the loss of compile-time checking. */
public class SharedSecrets {
private static final Unsafe unsafe = Unsafe.getUnsafe();
private static JavaUtilJarAccess javaUtilJarAccess;
private static JavaLangAccess javaLangAccess;
private static JavaLangModuleAccess javaLangModuleAccess;
private static JavaLangReflectModuleAccess javaLangReflectModuleAccess;
private static JavaLangInvokeAccess javaLangInvokeAccess;
private static JavaLangRefAccess javaLangRefAccess;
private static JavaIOAccess javaIOAccess;
private static JavaNetAccess javaNetAccess;
private static JavaNetInetAddressAccess javaNetInetAddressAccess;
private static JavaNetHttpCookieAccess javaNetHttpCookieAccess;
private static JavaNioAccess javaNioAccess;
private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;
private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess;
private static JavaSecurityAccess javaSecurityAccess;
private static JavaUtilZipFileAccess javaUtilZipFileAccess;
private static JavaUtilResourceBundleAccess javaUtilResourceBundleAccess;
private static JavaAWTAccess javaAWTAccess;
private static JavaAWTFontAccess javaAWTFontAccess;
private static JavaBeansAccess javaBeansAccess;
public static JavaUtilJarAccess javaUtilJarAccess() {
if (javaUtilJarAccess == null) {
// Ensure JarFile is initialized; we know that that class
// provides the shared secret
unsafe.ensureClassInitialized(JarFile.class);
}
return javaUtilJarAccess;
}
public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {
javaUtilJarAccess = access;
}
public static void setJavaLangAccess(JavaLangAccess jla) {
javaLangAccess = jla;
}
public static JavaLangAccess getJavaLangAccess() {
return javaLangAccess;
}
public static void setJavaLangInvokeAccess(JavaLangInvokeAccess jlia) {
javaLangInvokeAccess = jlia;
}
public static JavaLangInvokeAccess getJavaLangInvokeAccess() {
if (javaLangInvokeAccess == null) {
try {
Class<?> c = Class.forName("java.lang.invoke.MemberName");
unsafe.ensureClassInitialized(c);
} catch (ClassNotFoundException e) {};
}
return javaLangInvokeAccess;
}
public static void setJavaLangModuleAccess(JavaLangModuleAccess jlrma) {
javaLangModuleAccess = jlrma;
}
public static JavaLangModuleAccess getJavaLangModuleAccess() {
if (javaLangModuleAccess == null) {
unsafe.ensureClassInitialized(ModuleDescriptor.class);
}
return javaLangModuleAccess;
}
public static void setJavaLangReflectModuleAccess(JavaLangReflectModuleAccess jlrma) {
javaLangReflectModuleAccess = jlrma;
}
public static JavaLangReflectModuleAccess getJavaLangReflectModuleAccess() {
if (javaLangReflectModuleAccess == null)
unsafe.ensureClassInitialized(java.lang.reflect.Module.class);
return javaLangReflectModuleAccess;
}
public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {
javaLangRefAccess = jlra;
}
public static JavaLangRefAccess getJavaLangRefAccess() {
return javaLangRefAccess;
}
public static void setJavaNetAccess(JavaNetAccess jna) {
javaNetAccess = jna;
}
public static JavaNetAccess getJavaNetAccess() {
if (javaNetAccess == null)
unsafe.ensureClassInitialized(java.net.URLClassLoader.class);
return javaNetAccess;
}
public static void setJavaNetInetAddressAccess(JavaNetInetAddressAccess jna) {
javaNetInetAddressAccess = jna;
}
public static JavaNetInetAddressAccess getJavaNetInetAddressAccess() {
if (javaNetInetAddressAccess == null)
unsafe.ensureClassInitialized(java.net.InetAddress.class);
return javaNetInetAddressAccess;
}
public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
javaNetHttpCookieAccess = a;
}
public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
if (javaNetHttpCookieAccess == null)
unsafe.ensureClassInitialized(java.net.HttpCookie.class);
return javaNetHttpCookieAccess;
}
public static void setJavaNioAccess(JavaNioAccess jna) {
javaNioAccess = jna;
}
public static JavaNioAccess getJavaNioAccess() {
if (javaNioAccess == null) {
// Ensure java.nio.ByteOrder is initialized; we know that
// this class initializes java.nio.Bits that provides the
// shared secret.
unsafe.ensureClassInitialized(java.nio.ByteOrder.class);
}
return javaNioAccess;
}
public static void setJavaIOAccess(JavaIOAccess jia) {
javaIOAccess = jia;
}
public static JavaIOAccess getJavaIOAccess() {
if (javaIOAccess == null) {
unsafe.ensureClassInitialized(Console.class);
}
return javaIOAccess;
}
public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
javaIOFileDescriptorAccess = jiofda;
}
public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
if (javaIOFileDescriptorAccess == null)
unsafe.ensureClassInitialized(FileDescriptor.class);
return javaIOFileDescriptorAccess;
}
public static void setJavaSecurityProtectionDomainAccess
(JavaSecurityProtectionDomainAccess jspda) {
javaSecurityProtectionDomainAccess = jspda;
}
public static JavaSecurityProtectionDomainAccess
getJavaSecurityProtectionDomainAccess() {
if (javaSecurityProtectionDomainAccess == null)
unsafe.ensureClassInitialized(ProtectionDomain.class);
return javaSecurityProtectionDomainAccess;
}
public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
javaSecurityAccess = jsa;
}
public static JavaSecurityAccess getJavaSecurityAccess() {
if (javaSecurityAccess == null) {
unsafe.ensureClassInitialized(AccessController.class);
}
return javaSecurityAccess;
}
public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
if (javaUtilZipFileAccess == null)
unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);
return javaUtilZipFileAccess;
}
public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {
javaUtilZipFileAccess = access;
}
public static void setJavaAWTAccess(JavaAWTAccess jaa) {
javaAWTAccess = jaa;
}
public static JavaAWTAccess getJavaAWTAccess() {
// this may return null in which case calling code needs to
// provision for.
return javaAWTAccess;
}
public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) {
javaAWTFontAccess = jafa;
}
public static JavaAWTFontAccess getJavaAWTFontAccess() {
// this may return null in which case calling code needs to
// provision for.
return javaAWTFontAccess;
}
public static JavaBeansAccess getJavaBeansAccess() {
return javaBeansAccess;
}
public static void setJavaBeansAccess(JavaBeansAccess access) {
javaBeansAccess = access;
}
public static JavaUtilResourceBundleAccess getJavaUtilResourceBundleAccess() {
return javaUtilResourceBundleAccess;
}
public static void setJavaUtilResourceBundleAccess(JavaUtilResourceBundleAccess access) {
javaUtilResourceBundleAccess = access;
}
}