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 package jdk.internal.module; 26 27 import java.util.Map; 28 import java.util.Set; 29 import java.util.function.Function; 30 import java.lang.module.Configuration; 31 import java.lang.module.ModuleFinder; 32 import jdk.internal.misc.VM; 33 34 /** 35 * Used by ModuleBootstrap for archiving the configuration for the boot layer, 36 * the system module finder, and the maps used to create the IllegalAccessLogger. 37 */ 38 class ArchivedModuleGraph { 39 private static ArchivedModuleGraph archivedModuleGraph; 40 41 private final boolean hasSplitPackages; 42 private final boolean hasIncubatorModules; 43 private final ModuleFinder finder; 44 private final Configuration configuration; 45 private final Function<String, ClassLoader> classLoaderFunction; 46 private final Map<String, Set<String>> concealedPackagesToOpen; 47 private final Map<String, Set<String>> exportedPackagesToOpen; 48 49 private ArchivedModuleGraph(boolean hasSplitPackages, 50 boolean hasIncubatorModules, 51 ModuleFinder finder, 52 Configuration configuration, 53 Function<String, ClassLoader> classLoaderFunction, 54 Map<String, Set<String>> concealedPackagesToOpen, 55 Map<String, Set<String>> exportedPackagesToOpen) { 56 this.hasSplitPackages = hasSplitPackages; 57 this.hasIncubatorModules = hasIncubatorModules; 58 this.finder = finder; 59 this.configuration = configuration; 60 this.classLoaderFunction = classLoaderFunction; 61 this.concealedPackagesToOpen = concealedPackagesToOpen; 62 this.exportedPackagesToOpen = exportedPackagesToOpen; 63 } 64 65 ModuleFinder finder() { 66 return finder; 67 } 68 69 Configuration configuration() { 70 return configuration; 71 } 72 73 Function<String, ClassLoader> classLoaderFunction() { 74 return classLoaderFunction; 75 } 76 77 Map<String, Set<String>> concealedPackagesToOpen() { 78 return concealedPackagesToOpen; 79 } 80 81 Map<String, Set<String>> exportedPackagesToOpen() { 82 return exportedPackagesToOpen; 83 } 84 85 boolean hasSplitPackages() { 86 return hasSplitPackages; 87 } 88 89 boolean hasIncubatorModules() { 90 return hasIncubatorModules; 91 } 92 93 /** 94 * Returns the ArchivedModuleGraph for the given initial module. 95 */ 96 static ArchivedModuleGraph get(String mainModule) { 97 ArchivedModuleGraph graph = archivedModuleGraph; 98 // We only allow the unnamed module (default) case for now 99 if (mainModule == null) { 100 return graph; 101 } else { 102 return null; 103 } 104 } 105 106 /** 107 * Archive the module graph for the given initial module. 108 */ 109 static void archive(boolean hasSplitPackages, 110 boolean hasIncubatorModules, 111 ModuleFinder finder, 112 Configuration configuration, 113 Function<String, ClassLoader> classLoaderFunction, 114 Map<String, Set<String>> concealedPackagesToOpen, 115 Map<String, Set<String>> exportedPackagesToOpen) { 116 archivedModuleGraph = new ArchivedModuleGraph(hasSplitPackages, 117 hasIncubatorModules, 118 finder, 119 configuration, 120 classLoaderFunction, 121 concealedPackagesToOpen, 122 exportedPackagesToOpen); 123 } 124 125 static { 126 VM.initializeFromArchive(ArchivedModuleGraph.class); 127 } 128 }