1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.nodes.debug.instrumentation; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_IGNORED; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_IGNORED; 27 28 import org.graalvm.compiler.core.common.LocationIdentity; 29 import org.graalvm.compiler.core.common.type.Stamp; 30 import org.graalvm.compiler.graph.NodeClass; 31 import org.graalvm.compiler.nodeinfo.NodeInfo; 32 import org.graalvm.compiler.nodes.FixedWithNextNode; 33 import org.graalvm.compiler.nodes.NamedLocationIdentity; 34 import org.graalvm.compiler.nodes.StructuredGraph; 35 import org.graalvm.compiler.nodes.debug.StringToBytesNode; 36 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 37 import org.graalvm.compiler.nodes.spi.Lowerable; 38 import org.graalvm.compiler.nodes.spi.LoweringTool; 39 40 import jdk.vm.ci.meta.JavaKind; 41 import jdk.vm.ci.meta.ResolvedJavaMethod; 42 43 /** 44 * The {@code RootNameNode} represents the name of the compilation root. 45 */ 46 @NodeInfo(cycles = CYCLES_IGNORED, size = SIZE_IGNORED) 47 public final class RootNameNode extends FixedWithNextNode implements Lowerable, InstrumentationInliningCallback, MemoryCheckpoint.Single { 48 49 public static final NodeClass<RootNameNode> TYPE = NodeClass.create(RootNameNode.class); 50 51 public RootNameNode(Stamp stamp) { 52 super(TYPE, stamp); 53 } 54 55 /** 56 * resolve this node and replace with a {@link StringToBytesNode} that constructs the root 57 * method name in the compiled code. To ensure the correct result, this method should be invoked 58 * after inlining. 59 */ 60 private void resolve(StructuredGraph graph) { 61 ResolvedJavaMethod method = graph.method(); 62 String rootName = method == null ? "<unresolved method>" : (method.getDeclaringClass().toJavaName() + "." + method.getName() + method.getSignature().toMethodDescriptor()); 63 StringToBytesNode stringToByteNode = graph().add(new StringToBytesNode(rootName, stamp())); 64 graph().replaceFixedWithFixed(this, stringToByteNode); 65 } 66 67 @Override 68 public void lower(LoweringTool tool) { 69 resolve(graph()); 70 } 71 72 @Override 73 public void preInlineInstrumentation(InstrumentationNode instrumentation) { 74 // resolve to the method name of the original graph 75 resolve(instrumentation.graph()); 76 } 77 78 @Override 79 public void postInlineInstrumentation(InstrumentationNode instrumentation) { 80 } 81 82 @Override 83 public LocationIdentity getLocationIdentity() { 84 return NamedLocationIdentity.getArrayLocation(JavaKind.Byte); 85 } 86 87 }