1 /* 2 * Copyright (c) 2015, 2018, 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 24 25 package org.graalvm.compiler.nodes.graphbuilderconf; 26 27 import static jdk.vm.ci.services.Services.IS_BUILDING_NATIVE_IMAGE; 28 import static jdk.vm.ci.services.Services.IS_IN_NATIVE_IMAGE; 29 30 import java.lang.annotation.Annotation; 31 import java.lang.reflect.Method; 32 33 import org.graalvm.compiler.api.replacements.Fold; 34 import org.graalvm.compiler.debug.GraalError; 35 import org.graalvm.compiler.graph.Node.NodeIntrinsic; 36 import org.graalvm.compiler.nodes.ValueNode; 37 38 import jdk.vm.ci.meta.MetaAccessProvider; 39 import jdk.vm.ci.meta.ResolvedJavaMethod; 40 import jdk.vm.ci.meta.ResolvedJavaType; 41 42 /** 43 * Abstract class for a plugin generated for a method annotated by {@link NodeIntrinsic} or 44 * {@link Fold}. 45 */ 46 public abstract class GeneratedInvocationPlugin implements InvocationPlugin { 47 48 /** 49 * Gets the class of the annotation for which this plugin was generated. 50 */ 51 public abstract Class<? extends Annotation> getSource(); 52 53 @Override 54 public abstract boolean execute(GraphBuilderContext b, ResolvedJavaMethod targetMethod, InvocationPlugin.Receiver receiver, ValueNode[] args); 55 56 @Override 57 public StackTraceElement getApplySourceLocation(MetaAccessProvider metaAccess) { 58 Class<?> c = getClass(); 59 for (Method m : c.getDeclaredMethods()) { 60 if (m.getName().equals("execute")) { 61 return metaAccess.lookupJavaMethod(m).asStackTraceElement(0); 62 } 63 } 64 throw new GraalError("could not find method named \"execute\" in " + c.getName()); 65 } 66 67 protected boolean checkInjectedArgument(GraphBuilderContext b, ValueNode arg, ResolvedJavaMethod foldAnnotatedMethod) { 68 if (arg.isNullConstant()) { 69 return true; 70 } 71 72 if (IS_IN_NATIVE_IMAGE || IS_BUILDING_NATIVE_IMAGE) { 73 // The reflection here is problematic for SVM. 74 return true; 75 } 76 77 MetaAccessProvider metaAccess = b.getMetaAccess(); 78 ResolvedJavaMethod executeMethod = metaAccess.lookupJavaMethod(getExecuteMethod()); 79 ResolvedJavaType thisClass = metaAccess.lookupJavaType(getClass()); 80 ResolvedJavaMethod thisExecuteMethod = thisClass.resolveConcreteMethod(executeMethod, thisClass); 81 if (b.getMethod().equals(thisExecuteMethod)) { 82 // The "execute" method of this plugin is itself being compiled. In (only) this context, 83 // the injected argument of the call to the @Fold annotated method will be non-null. 84 return true; 85 } 86 throw new AssertionError("must pass null to injected argument of " + foldAnnotatedMethod.format("%H.%n(%p)") + ", not " + arg); 87 } 88 89 private static Method getExecuteMethod() { 90 try { 91 return GeneratedInvocationPlugin.class.getMethod("execute", GraphBuilderContext.class, ResolvedJavaMethod.class, InvocationPlugin.Receiver.class, ValueNode[].class); 92 } catch (NoSuchMethodException | SecurityException e) { 93 throw new GraalError(e); 94 } 95 } 96 }