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comparison graal/com.oracle.max.graal.compiler/src/com/sun/c1x/ir/MonitorEnter.java @ 2872:0341b6424579

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Project renaming.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 08 Jun 2011 08:42:25 +0200
parents graal/GraalCompiler/src/com/sun/c1x/ir/MonitorEnter.java@14708c03abba
children
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2871:d704eb526603 2872:0341b6424579
1 /*
2 * Copyright (c) 2009, 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.oracle.graal.graph.*;
26 import com.sun.c1x.debug.*;
27
28 /**
29 * The {@code MonitorEnter} instruction represents the acquisition of a monitor.
30 */
31 public final class MonitorEnter extends AccessMonitor {
32
33 private static final int INPUT_COUNT = 0;
34
35 private static final int SUCCESSOR_COUNT = 1;
36
37 @Override
38 protected int successorCount() {
39 return super.successorCount() + SUCCESSOR_COUNT;
40 }
41
42 /**
43 * Creates a new MonitorEnter instruction.
44 *
45 * @param object the instruction producing the object
46 * @param lockAddress the address of the on-stack lock object or {@code null} if the runtime does not place locks on the stack
47 * @param lockNumber the number of the lock
48 * @param graph
49 */
50 public MonitorEnter(Value object, Value lockAddress, int lockNumber, Graph graph) {
51 super(object, lockAddress, lockNumber, INPUT_COUNT, SUCCESSOR_COUNT, graph);
52 }
53
54 @Override
55 public void accept(ValueVisitor v) {
56 v.visitMonitorEnter(this);
57 }
58
59 @Override
60 public void print(LogStream out) {
61 out.print("enter monitor[").print(lockNumber).print("](").print(object()).print(')');
62 }
63
64 @Override
65 public Node copy(Graph into) {
66 MonitorEnter x = new MonitorEnter(null, null, lockNumber, into);
67 return x;
68 }
69 }