Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/NewInstanceNode.java @ 18998:ec0733b5a90a
Allow final modifier on node subclasses and start adding the modifier to leaf classes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 28 Jan 2015 02:34:14 +0100 |
parents | f57d86eb036f |
children | 7e2c87dae93e |
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/* * Copyright (c) 2009, 2011, 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 java.lang.ref.*; import java.util.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.virtual.*; /** * The {@code NewInstanceNode} represents the allocation of an instance class object. */ @NodeInfo(nameTemplate = "New {p#instanceClass/s}") public final class NewInstanceNode extends AbstractNewObjectNode implements VirtualizableAllocation { protected final ResolvedJavaType instanceClass; public NewInstanceNode(ResolvedJavaType type, boolean fillContents) { super(StampFactory.exactNonNull(type), fillContents); assert !type.isArray() && !type.isInterface() && !type.isPrimitive(); this.instanceClass = type; } /** * Gets the instance class being allocated by this node. * * @return the instance class allocated */ public ResolvedJavaType instanceClass() { return instanceClass; } @Override public void virtualize(VirtualizerTool tool) { /* * Reference objects can escape into their ReferenceQueue at any safepoint, therefore * they're excluded from escape analysis. */ if (!tool.getMetaAccessProvider().lookupJavaType(Reference.class).isAssignableFrom(instanceClass)) { VirtualInstanceNode virtualObject = createVirtualInstanceNode(true); ResolvedJavaField[] fields = virtualObject.getFields(); ValueNode[] state = new ValueNode[fields.length]; for (int i = 0; i < state.length; i++) { state[i] = defaultFieldValue(fields[i]); } tool.createVirtualObject(virtualObject, state, Collections.<MonitorIdNode> emptyList()); tool.replaceWithVirtual(virtualObject); } } protected VirtualInstanceNode createVirtualInstanceNode(boolean hasIdentity) { return new VirtualInstanceNode(instanceClass(), hasIdentity); } /* Factored out in a separate method so that subclasses can override it. */ protected ConstantNode defaultFieldValue(ResolvedJavaField field) { return ConstantNode.defaultForKind(field.getType().getKind(), graph()); } }