117 lines
5.3 KiB
Java
117 lines
5.3 KiB
Java
/*
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* Copyright (c) 2020, 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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*/
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package java.lang.invoke;
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import jdk.internal.loader.BuiltinClassLoader;
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import jdk.internal.misc.CDS;
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final class LambdaProxyClassArchive {
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/**
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* Check if the class is loaded by a built-in class loader.
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*/
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static boolean loadedByBuiltinLoader(Class<?> cls) {
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ClassLoader cl = cls.getClassLoader();
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return (cl == null || (cl instanceof BuiltinClassLoader)) ? true : false;
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}
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private static native void addToArchive(Class<?> caller,
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String invokedName,
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MethodType invokedType,
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MethodType samMethodType,
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MemberName implMethod,
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MethodType instantiatedMethodType,
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Class<?> lambdaProxyClass);
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private static native Class<?> findFromArchive(Class<?> caller,
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String invokedName,
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MethodType invokedType,
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MethodType samMethodType,
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MemberName implMethod,
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MethodType instantiatedMethodType,
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boolean initialize);
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/**
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* Registers the lambdaProxyClass into CDS archive.
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* The VM will store the lambdaProxyClass into a hash table
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* using the first six argumennts as the key.
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*
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* CDS only archives lambda proxy class if it's not serializable
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* and no marker interfaces and no additional bridges, and if it is
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* loaded by a built-in class loader.
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*/
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static boolean register(Class<?> caller,
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String invokedName,
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MethodType invokedType,
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MethodType samMethodType,
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MethodHandle implMethod,
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MethodType instantiatedMethodType,
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boolean isSerializable,
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Class<?>[] markerInterfaces,
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MethodType[] additionalBridges,
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Class<?> lambdaProxyClass) {
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if (!CDS.isDumpingArchive())
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throw new IllegalStateException("should only register lambda proxy class at dump time");
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if (loadedByBuiltinLoader(caller) &&
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!isSerializable && markerInterfaces.length == 0 && additionalBridges.length == 0) {
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addToArchive(caller, invokedName, invokedType, samMethodType,
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implMethod.internalMemberName(), instantiatedMethodType,
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lambdaProxyClass);
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return true;
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}
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return false;
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}
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/**
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* Lookup a lambda proxy class from the CDS archive using the first
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* six arguments as the key.
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*
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* CDS only archives lambda proxy class if it's not serializable
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* and no marker interfaces and no additional bridges, and if it is
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* loaded by a built-in class loader.
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*/
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static Class<?> find(Class<?> caller,
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String invokedName,
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MethodType invokedType,
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MethodType samMethodType,
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MethodHandle implMethod,
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MethodType instantiatedMethodType,
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boolean isSerializable,
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Class<?>[] markerInterfaces,
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MethodType[] additionalBridges,
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boolean initialize) {
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if (CDS.isDumpingArchive())
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throw new IllegalStateException("cannot load class from CDS archive at dump time");
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if (!loadedByBuiltinLoader(caller) || !initialize ||
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!CDS.isSharingEnabled() || isSerializable || markerInterfaces.length > 0 || additionalBridges.length > 0)
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return null;
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return findFromArchive(caller, invokedName, invokedType, samMethodType,
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implMethod.internalMemberName(), instantiatedMethodType, initialize);
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}
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}
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