Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/AccessMonitorNode.java @ 15001:27c04ee36dcb
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author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Mon, 07 Apr 2014 11:32:04 +0200 |
parents | 6ae9af961b7c |
children | 06e50d290784 |
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/* * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.nodes.java; import com.oracle.graal.api.code.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.type.*; /** * The {@code AccessMonitorNode} is the base class of both monitor acquisition and release. * <p> * The Java bytecode specification allows non-balanced locking. Graal does not handle such cases and * throws a {@link BailoutException} instead during graph building. */ public abstract class AccessMonitorNode extends AbstractMemoryCheckpoint implements MemoryCheckpoint, DeoptimizingNode.DeoptBefore, DeoptimizingNode.DeoptAfter { @Input(InputType.State) private FrameState stateBefore; @Input private ValueNode object; @Input(InputType.Association) private MonitorIdNode monitorId; @Override public boolean canDeoptimize() { return true; } public FrameState stateBefore() { return stateBefore; } @Override public void setStateBefore(FrameState f) { updateUsages(stateBefore, f); stateBefore = f; } public ValueNode object() { return object; } public MonitorIdNode getMonitorId() { return monitorId; } /** * Creates a new AccessMonitor instruction. * * @param object the instruction producing the object */ public AccessMonitorNode(ValueNode object, MonitorIdNode monitorId) { super(StampFactory.forVoid()); this.object = object; this.monitorId = monitorId; } }