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comparison graal/GraalCompiler/src/com/sun/c1x/ir/MemoryBarrier.java @ 2509:16b9a8b5ad39

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Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:50:44 +0200
parents graal/Compiler/src/com/sun/c1x/ir/MemoryBarrier.java@9ec15d6914ca
children
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2508:fea94949e0a2 2509:16b9a8b5ad39
1 /*
2 * Copyright (c) 2010, 2011, 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 */
23 package com.sun.c1x.ir;
24
25 import com.sun.c1x.debug.*;
26 import com.sun.cri.bytecode.*;
27 import com.sun.cri.bytecode.Bytecodes.*;
28 import com.sun.cri.ci.*;
29
30 /**
31 * Instruction implementing the semantics of {@link Bytecodes#MEMBAR}.
32 *
33 * @author Doug Simon
34 */
35 public final class MemoryBarrier extends Instruction {
36
37 /**
38 * A mask of the constants defined by {@link Bytecodes.MemoryBarriers}.
39 */
40 public final int barriers;
41
42 /**
43 * Creates a {@link MemoryBarrier} instance.
44 */
45 public MemoryBarrier(int barriers) {
46 super(CiKind.Void);
47 assert barriers != 0;
48 this.barriers = barriers;
49 setFlag(Flag.LiveSideEffect);
50 }
51
52 @Override
53 public void accept(ValueVisitor v) {
54 v.visitMemoryBarrier(this);
55 }
56
57 @Override
58 public void print(LogStream out) {
59 out.print(MemoryBarriers.barriersString(barriers));
60 }
61 }