Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MonitorExitNode.java @ 12380:e027a51bdd33
exclude java.lang.ref.Reference from Escape Analysis
author | Lukas Stadler <lukas.stadler@jku.at> |
---|---|
date | Mon, 14 Oct 2013 10:45:02 +0200 |
parents | 0fc653a9e019 |
children | 0b71e8b6418c |
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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.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.spi.*; /** * The {@code MonitorEnterNode} represents a monitor release. */ public final class MonitorExitNode extends AccessMonitorNode implements Virtualizable, Lowerable, IterableNodeType, MonitorExit, MemoryCheckpoint.Single, MonitorReference { private int lockDepth; /** * Creates a new MonitorExitNode. * * @param object the instruction produces the object value */ public MonitorExitNode(ValueNode object, int lockDepth) { super(object); this.lockDepth = lockDepth; } @Override public LocationIdentity getLocationIdentity() { return LocationIdentity.ANY_LOCATION; } @Override public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } public int getLockDepth() { return lockDepth; } public void setLockDepth(int lockDepth) { this.lockDepth = lockDepth; } @Override public void virtualize(VirtualizerTool tool) { State state = tool.getObjectState(object()); if (state != null && state.getState() == EscapeState.Virtual && state.getVirtualObject().hasIdentity()) { int removedLock = state.removeLock(); assert removedLock == getLockDepth(); tool.delete(); } } }