ArchivedBootLayer.java

/*
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 * 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,
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 *
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package jdk.internal.module;

import jdk.internal.misc.CDS;

/**
 * Used by ModuleBootstrap for archiving the boot layer.
 */
class ArchivedBootLayer {
    private static ArchivedBootLayer archivedBootLayer;

    private final ModuleLayer bootLayer;

    private ArchivedBootLayer(ModuleLayer bootLayer) {
        this.bootLayer = bootLayer;
    }

    ModuleLayer bootLayer() {
        return bootLayer;
    }

    static ArchivedBootLayer get() {
        return archivedBootLayer;
    }

    static void archive(ModuleLayer layer) {
        archivedBootLayer = new ArchivedBootLayer(layer);
    }

    static {
        CDS.initializeFromArchive(ArchivedBootLayer.class);
    }
}