Mercurial > hg > truffle
comparison graal/GraalCompiler/src/com/sun/c1x/ir/MonitorExit.java @ 2509:16b9a8b5ad39
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/MonitorExit.java@9ec15d6914ca |
children | 0f9eeb15e636 |
comparison
equal
deleted
inserted
replaced
2508:fea94949e0a2 | 2509:16b9a8b5ad39 |
---|---|
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.sun.c1x.debug.*; | |
26 import com.sun.c1x.value.*; | |
27 | |
28 /** | |
29 * The {@code MonitorExit} instruction represents a monitor release. | |
30 * | |
31 * @author Ben L. Titzer | |
32 */ | |
33 public final class MonitorExit extends AccessMonitor { | |
34 | |
35 /** | |
36 * Creates a new MonitorExit instruction. | |
37 * | |
38 * @param object the instruction produces the object value | |
39 * @param lockAddress the address of the on-stack lock object or {@code null} if the runtime does not place locks on the stack | |
40 * @param lockNumber the number of the lock | |
41 * @param stateBefore the state before executing this instruction | |
42 */ | |
43 public MonitorExit(Value object, Value lockAddress, int lockNumber, FrameState stateBefore) { | |
44 super(object, lockAddress, stateBefore, lockNumber); | |
45 if (object.isNonNull()) { | |
46 eliminateNullCheck(); | |
47 } | |
48 } | |
49 | |
50 @Override | |
51 public boolean canTrap() { | |
52 // C1X assumes that locks are well balanced and so there no need to handle | |
53 // IllegalMonitorStateExceptions thrown by monitorexit instructions. | |
54 return needsNullCheck(); | |
55 } | |
56 | |
57 @Override | |
58 public void accept(ValueVisitor v) { | |
59 v.visitMonitorExit(this); | |
60 } | |
61 | |
62 @Override | |
63 public void print(LogStream out) { | |
64 out.print("exit monitor[").print(lockNumber).print("](").print(object()).print(')'); | |
65 } | |
66 } |