| /* |
| * Copyright (c) 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.loader; |
| |
| import java.lang.module.Configuration; |
| import java.lang.module.ResolvedModule; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.stream.Stream; |
| |
| /** |
| * A pool of class loaders. |
| * |
| * @see ModuleLayer#defineModulesWithManyLoaders |
| */ |
| |
| public final class LoaderPool { |
| |
| // maps module names to class loaders |
| private final Map<String, Loader> loaders; |
| |
| |
| /** |
| * Creates a pool of class loaders. Each module in the given configuration |
| * will be loaded its own class loader in the pool. The class loader is |
| * created with the given parent class loader as its parent. |
| */ |
| public LoaderPool(Configuration cf, |
| List<ModuleLayer> parentLayers, |
| ClassLoader parentLoader) |
| { |
| Map<String, Loader> loaders = new HashMap<>(); |
| for (ResolvedModule resolvedModule : cf.modules()) { |
| Loader loader = new Loader(resolvedModule, this, parentLoader); |
| String mn = resolvedModule.name(); |
| loaders.put(mn, loader); |
| } |
| this.loaders = loaders; |
| |
| // complete the initialization |
| loaders.values().forEach(l -> l.initRemotePackageMap(cf, parentLayers)); |
| } |
| |
| |
| /** |
| * Returns the class loader for the named module |
| */ |
| public Loader loaderFor(String name) { |
| Loader loader = loaders.get(name); |
| assert loader != null; |
| return loader; |
| } |
| |
| /** |
| * Returns a stream of the loaders in this pool. |
| */ |
| public Stream<Loader> loaders() { |
| return loaders.values().stream(); |
| } |
| |
| } |
| |