1 /*
   2  * Copyright (c) 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 jdk.internal.misc.VM;
  28 
  29 /**
  30  * Used by ModuleBootstrap for archiving the boot layer and the builder needed to
  31  * set the IllegalAccessLogger.
  32  */
  33 class ArchivedBootLayer {
  34     private static ArchivedBootLayer archivedBootLayer;
  35 
  36     private final ModuleLayer bootLayer;
  37     private final IllegalAccessLogger.Builder builder;
  38 
  39     private ArchivedBootLayer(ModuleLayer bootLayer,
  40                               IllegalAccessLogger.Builder builder) {
  41         this.bootLayer = bootLayer;
  42         this.builder = builder;
  43     }
  44 
  45     ModuleLayer bootLayer() {
  46         return bootLayer;
  47     }
  48     
  49     IllegalAccessLogger.Builder illegalAccessLoggerBuilder() {
  50         return builder;
  51     }
  52 
  53     static ArchivedBootLayer get() {
  54         return archivedBootLayer;
  55     }
  56 
  57     static void archive(ModuleLayer layer, IllegalAccessLogger.Builder builder) {
  58         archivedBootLayer = new ArchivedBootLayer(layer, builder);
  59     }
  60 
  61     static {
  62         VM.initializeFromArchive(ArchivedBootLayer.class);
  63     }
  64 }