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 */
013package org.vmmagic.pragma;
014
015import java.lang.annotation.Retention;
016import java.lang.annotation.Target;
017import java.lang.annotation.RetentionPolicy;
018import java.lang.annotation.ElementType;
019
020/**
021 * Use this annotation to mark types that must never move. This is intended for
022 * a very small set of VM internal types that are accessed without knowledge of the
023 * memory manager. This includes code, that is CALLed and fields that are loaded
024 * directly (such as Untraced fields).
025 */
026@Retention(RetentionPolicy.RUNTIME)
027@Target(ElementType.TYPE)
028public @interface NonMoving { }