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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
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package org.graalvm.compiler.nodes.debug.instrumentation;

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_IGNORED;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_IGNORED;

import org.graalvm.compiler.core.common.LocationIdentity;
import org.graalvm.compiler.core.common.type.Stamp;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.NamedLocationIdentity;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.debug.StringToBytesNode;
import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
import org.graalvm.compiler.nodes.spi.Lowerable;
import org.graalvm.compiler.nodes.spi.LoweringTool;

import jdk.vm.ci.meta.JavaKind;
import jdk.vm.ci.meta.ResolvedJavaMethod;

The RootNameNode represents the name of the compilation root.
/** * The {@code RootNameNode} represents the name of the compilation root. */
@NodeInfo(cycles = CYCLES_IGNORED, size = SIZE_IGNORED) public final class RootNameNode extends FixedWithNextNode implements Lowerable, InstrumentationInliningCallback, MemoryCheckpoint.Single { public static final NodeClass<RootNameNode> TYPE = NodeClass.create(RootNameNode.class); public RootNameNode(Stamp stamp) { super(TYPE, stamp); }
resolve this node and replace with a StringToBytesNode that constructs the root method name in the compiled code. To ensure the correct result, this method should be invoked after inlining.
/** * resolve this node and replace with a {@link StringToBytesNode} that constructs the root * method name in the compiled code. To ensure the correct result, this method should be invoked * after inlining. */
private void resolve(StructuredGraph graph) { ResolvedJavaMethod method = graph.method(); String rootName = method == null ? "<unresolved method>" : (method.getDeclaringClass().toJavaName() + "." + method.getName() + method.getSignature().toMethodDescriptor()); StringToBytesNode stringToByteNode = graph().add(new StringToBytesNode(rootName, stamp())); graph().replaceFixedWithFixed(this, stringToByteNode); } @Override public void lower(LoweringTool tool) { resolve(graph()); } @Override public void preInlineInstrumentation(InstrumentationNode instrumentation) { // resolve to the method name of the original graph resolve(instrumentation.graph()); } @Override public void postInlineInstrumentation(InstrumentationNode instrumentation) { } @Override public LocationIdentity getLocationIdentity() { return NamedLocationIdentity.getArrayLocation(JavaKind.Byte); } }