Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/BeginLockScopeNode.java @ 21556:48c1ebd24120
renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 27 May 2015 00:36:16 +0200 |
parents | cba35d171cd1 |
children | 0e095e2c24e2 |
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/* * Copyright (c) 2012, 2015, 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.hotspot.nodes; import com.oracle.jvmci.code.StackSlotValue; import com.oracle.jvmci.meta.Value; import com.oracle.jvmci.meta.LocationIdentity; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.memory.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.word.*; /** * Intrinsic for opening a scope binding a stack-based lock with an object. A lock scope must be * closed with an {@link EndLockScopeNode}. The frame state after this node denotes that the object * is locked (ensuring the GC sees and updates the object) so it must come after any null pointer * check on the object. */ @NodeInfo(allowedUsageTypes = {InputType.Memory}) public final class BeginLockScopeNode extends AbstractMemoryCheckpoint implements LIRLowerable, MonitorEnter, MemoryCheckpoint.Single { public static final NodeClass<BeginLockScopeNode> TYPE = NodeClass.create(BeginLockScopeNode.class); protected int lockDepth; public BeginLockScopeNode(@InjectedNodeParameter WordTypes wordTypes, int lockDepth) { super(TYPE, StampFactory.forKind(wordTypes.getWordKind())); this.lockDepth = lockDepth; } @Override public boolean hasSideEffect() { return false; } @Override public LocationIdentity getLocationIdentity() { return LocationIdentity.any(); } @Override public void generate(NodeLIRBuilderTool gen) { assert lockDepth != -1; HotSpotLIRGenerator hsGen = (HotSpotLIRGenerator) gen.getLIRGeneratorTool(); StackSlotValue slot = hsGen.getLockSlot(lockDepth); Value result = gen.getLIRGeneratorTool().emitAddress(slot); gen.setResult(this, result); } @NodeIntrinsic public static native Word beginLockScope(@ConstantNodeParameter int lockDepth); }