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.graphbuilderconf; 24 25 import java.lang.reflect.Method; 26 27 import org.graalvm.compiler.debug.GraalError; 28 import org.graalvm.compiler.nodes.ValueNode; 29 30 import jdk.vm.ci.meta.MetaAccessProvider; 31 import jdk.vm.ci.meta.ResolvedJavaMethod; 32 import jdk.vm.ci.meta.ResolvedJavaType; 33 34 public abstract class GeneratedInvocationPlugin implements InvocationPlugin { 35 36 @Override 37 public abstract boolean execute(GraphBuilderContext b, ResolvedJavaMethod targetMethod, InvocationPlugin.Receiver receiver, ValueNode[] args); 38 39 @Override 40 public StackTraceElement getApplySourceLocation(MetaAccessProvider metaAccess) { 41 Class<?> c = getClass(); 42 for (Method m : c.getDeclaredMethods()) { 43 if (m.getName().equals("execute")) { 44 return metaAccess.lookupJavaMethod(m).asStackTraceElement(0); 45 } 46 } 47 throw new GraalError("could not find method named \"execute\" in " + c.getName()); 48 } 49 50 protected boolean checkInjectedArgument(GraphBuilderContext b, ValueNode arg, ResolvedJavaMethod foldAnnotatedMethod) { 51 if (arg.isNullConstant()) { 52 return true; 53 } 54 55 MetaAccessProvider metaAccess = b.getMetaAccess(); 56 ResolvedJavaMethod executeMethod = metaAccess.lookupJavaMethod(getExecuteMethod()); 57 ResolvedJavaType thisClass = metaAccess.lookupJavaType(getClass()); 58 ResolvedJavaMethod thisExecuteMethod = thisClass.resolveConcreteMethod(executeMethod, thisClass); 59 if (b.getMethod().equals(thisExecuteMethod)) { 60 // The "execute" method of this plugin is itself being compiled. In (only) this context, 61 // the injected argument of the call to the @Fold annotated method will be non-null. 62 return true; 63 } 64 throw new AssertionError("must pass null to injected argument of " + foldAnnotatedMethod.format("%H.%n(%p)")); 65 } 66 67 private static Method getExecuteMethod() { 68 try { 69 return GeneratedInvocationPlugin.class.getMethod("execute", GraphBuilderContext.class, ResolvedJavaMethod.class, InvocationPlugin.Receiver.class, ValueNode[].class); 70 } catch (NoSuchMethodException | SecurityException e) { 71 throw new GraalError(e); 72 } 73 } 74 }