001    /*
002     *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003     *
004     *  This file is licensed to You under the Eclipse Public License (EPL);
005     *  You may not use this file except in compliance with the License. You
006     *  may obtain a copy of the License at
007     *
008     *      http://www.opensource.org/licenses/eclipse-1.0.php
009     *
010     *  See the COPYRIGHT.txt file distributed with this work for information
011     *  regarding copyright ownership.
012     */
013    package org.vmmagic.pragma;
014    
015    import java.lang.annotation.Retention;
016    import java.lang.annotation.Target;
017    import java.lang.annotation.RetentionPolicy;
018    import java.lang.annotation.ElementType;
019    import org.vmmagic.Pragma;
020    
021    /**
022     * When applied to class this annotation indicates that the data component
023     * of this field consists of an intrinsically managed chunk of raw memory of
024     * the specified size. This is used as the basic building block for native
025     * width types.<p>
026     *
027     * To construct types larger than those possible with RawStorage, simply
028     * construct an type with multiple (Unboxed) fields.
029     */
030    @Retention(RetentionPolicy.RUNTIME)
031    @Target({ElementType.TYPE})
032    @Pragma
033    public @interface RawStorage {
034      boolean lengthInWords();
035      int length();
036    }