Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MonitorExitNode.java @ 17450:45b45f902bed
removed Node generation (GRAAL-857)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 15 Oct 2014 15:35:33 +0200 |
parents | c9bb0da795d4 |
children | f57d86eb036f |
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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.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.spi.*; /** * The {@code MonitorExitNode} represents a monitor release. If it is the release of the monitor of * a synchronized method, then the return value of the method will be referenced, so that it will be * materialized before releasing the monitor. */ @NodeInfo public class MonitorExitNode extends AccessMonitorNode implements Virtualizable, Simplifiable, Lowerable, IterableNodeType, MonitorExit, MemoryCheckpoint.Single { @OptionalInput ValueNode escapedReturnValue; /** * Creates a new MonitorExitNode. */ public static MonitorExitNode create(ValueNode object, MonitorIdNode monitorId, ValueNode escapedReturnValue) { return new MonitorExitNode(object, monitorId, escapedReturnValue); } protected MonitorExitNode(ValueNode object, MonitorIdNode monitorId, ValueNode escapedReturnValue) { super(object, monitorId); this.escapedReturnValue = escapedReturnValue; } public ValueNode getEscapedReturnValue() { return escapedReturnValue; } public void setEscapedReturnValue(ValueNode x) { updateUsages(escapedReturnValue, x); this.escapedReturnValue = x; } @Override public LocationIdentity getLocationIdentity() { return LocationIdentity.ANY_LOCATION; } @Override public void simplify(SimplifierTool tool) { if (escapedReturnValue != null && stateAfter() != null && stateAfter().bci != BytecodeFrame.AFTER_BCI) { ValueNode returnValue = escapedReturnValue; setEscapedReturnValue(null); tool.removeIfUnused(returnValue); } } @Override public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } @Override public void virtualize(VirtualizerTool tool) { State state = tool.getObjectState(object()); // the monitor exit for a synchronized method should never be virtualized assert stateAfter().bci != BytecodeFrame.AFTER_BCI || state == null; if (state != null && state.getState() == EscapeState.Virtual && state.getVirtualObject().hasIdentity()) { MonitorIdNode removedLock = state.removeLock(); assert removedLock == getMonitorId() : "mismatch at " + this + ": " + removedLock + " vs. " + getMonitorId(); tool.delete(); } } }