1 /* 2 * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.internal.module; 27 28 import java.lang.module.Configuration; 29 import java.lang.module.ModuleFinder; 30 import java.util.Map; 31 import java.util.Set; 32 import java.util.function.Function; 33 34 import jdk.internal.misc.VM; 35 36 /** 37 * Used by ModuleBootstrap to obtain the archived system modules and finder. 38 */ 39 final class ArchivedModuleGraph { 40 private static ArchivedModuleGraph archivedModuleGraph; 41 42 private final boolean hasSplitPackages; 43 private final boolean hasIncubatorModules; 44 private final ModuleFinder finder; 45 private final Configuration configuration; 46 private final Function<String, ClassLoader> classLoaderFunction; 47 private final Map<String, Set<String>> concealedPackagesToOpen; 48 private final Map<String, Set<String>> exportedPackagesToOpen; 49 50 public ArchivedModuleGraph(boolean hasSplitPackages, 51 boolean hasIncubatorModules, 52 ModuleFinder finder, 53 Configuration configuration, 54 Function<String, ClassLoader> classLoaderFunction, 55 Map<String, Set<String>> concealedPackagesToOpen, 56 Map<String, Set<String>> exportedPackagesToOpen) { 57 this.hasSplitPackages = hasSplitPackages; 58 this.hasIncubatorModules = hasIncubatorModules; 59 this.finder = finder; 60 this.configuration = configuration; 61 this.classLoaderFunction = classLoaderFunction; 62 this.concealedPackagesToOpen = concealedPackagesToOpen; 63 this.exportedPackagesToOpen = exportedPackagesToOpen; 64 } 65 66 ModuleFinder finder() { 67 return finder; 68 } 69 70 Configuration configuration() { 71 return configuration; 72 } 73 74 Function<String, ClassLoader> classLoaderFunction() { 75 return classLoaderFunction; 76 } 77 78 Map<String, Set<String>> concealedPackagesToOpen() { 79 return concealedPackagesToOpen; 80 } 81 82 Map<String, Set<String>> exportedPackagesToOpen() { 83 return exportedPackagesToOpen; 84 } 85 86 boolean hasSplitPackages() { 87 return hasSplitPackages; 88 } 89 90 boolean hasIncubatorModules() { 91 return hasIncubatorModules; 92 } 93 94 /** 95 * Returns the ArchivedModuleGraph for the given initial module. 96 */ 97 static ArchivedModuleGraph get(String mainModule) { 98 ArchivedModuleGraph graph = archivedModuleGraph; 99 // We only allow the unnamed module (default) case for now 100 if (mainModule == null) { 101 return graph; 102 } else { 103 return null; 104 } 105 } 106 107 /** 108 * Archive the module graph for the given initial module. 109 */ 110 static void archive(ArchivedModuleGraph graph) { 111 archivedModuleGraph = graph; 112 } 113 114 static { 115 VM.initializeFromArchive(ArchivedModuleGraph.class); 116 } 117 }