MemoryMap.java revision 12651:6ef01bd40ce2 
1/*
2 * Copyright (c) 2013, 2016, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23package org.graalvm.compiler.nodes.memory;
24
25import java.util.Collection;
26
27import org.graalvm.compiler.core.common.LocationIdentity;
28
29/**
30 * Maps a {@linkplain LocationIdentity location} to the last node that (potentially) wrote to the
31 * location.
32 */
33public interface MemoryMap {
34
35    /**
36     * Gets the last node that that (potentially) wrote to {@code locationIdentity}.
37     */
38    MemoryNode getLastLocationAccess(LocationIdentity locationIdentity);
39
40    /**
41     * Gets the location identities in the domain of this map.
42     */
43    Collection<LocationIdentity> getLocations();
44}
45