1 /* 2 * Copyright (c) 2018, 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.Objects; 32 import java.util.Set; 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 String mainModule; 43 private final boolean hasSplitPackages; 44 private final boolean hasIncubatorModules; 45 private final ModuleFinder finder; 46 private final Configuration configuration; 47 private final Map<String, Set<String>> concealedPackagesToOpen; 48 private final Map<String, Set<String>> exportedPackagesToOpen; 49 50 private ArchivedModuleGraph(String mainModule, 51 boolean hasSplitPackages, 52 boolean hasIncubatorModules, 53 ModuleFinder finder, 54 Configuration configuration, 55 Map<String, Set<String>> concealedPackagesToOpen, 56 Map<String, Set<String>> exportedPackagesToOpen) { 57 this.mainModule = mainModule; 58 this.hasSplitPackages = hasSplitPackages; 59 this.hasIncubatorModules = hasIncubatorModules; 60 this.finder = finder; 61 this.configuration = configuration; 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 Map<String, Set<String>> concealedPackagesToOpen() { 75 return concealedPackagesToOpen; 76 } 77 78 Map<String, Set<String>> exportedPackagesToOpen() { 79 return exportedPackagesToOpen; 80 } 81 82 boolean hasSplitPackages() { 83 return hasSplitPackages; 84 } 85 86 boolean hasIncubatorModules() { 87 return hasIncubatorModules; 88 } 89 90 /** 91 * Returns the ArchivedModuleGraph for the given initial module. 92 */ 93 static ArchivedModuleGraph get(String mainModule) { 94 ArchivedModuleGraph graph = archivedModuleGraph; 95 if (graph != null && Objects.equals(mainModule, graph.mainModule)) { 96 return graph; 97 } else { 98 return null; 99 } 100 } 101 102 /** 103 * Archive the module graph for the given initial module. 104 */ 105 static void archive(String mainModule, 106 boolean hasSplitPackages, 107 boolean hasIncubatorModules, 108 ModuleFinder finder, 109 Configuration configuration, 110 Map<String, Set<String>> concealedPackagesToOpen, 111 Map<String, Set<String>> exportedPackagesToOpen) { 112 if (mainModule != null) { 113 throw new UnsupportedOperationException(); 114 } 115 archivedModuleGraph = new ArchivedModuleGraph(mainModule, 116 hasSplitPackages, 117 hasIncubatorModules, 118 finder, 119 configuration, 120 concealedPackagesToOpen, 121 exportedPackagesToOpen); 122 } 123 124 static { 125 VM.initializeFromArchive(ArchivedModuleGraph.class); 126 } 127 }