--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.phases/src/org/graalvm/compiler/phases/verify/VerifyCallerSensitiveMethods.java 2016-12-09 00:56:35.032078520 -0800 @@ -0,0 +1,95 @@ +/* + * Copyright (c) 2013, 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 org.graalvm.compiler.phases.verify; + +import static org.graalvm.compiler.core.common.util.Util.Java8OrEarlier; + +import java.lang.annotation.Annotation; + +import org.graalvm.compiler.nodes.Invoke; +import org.graalvm.compiler.nodes.StructuredGraph; +import org.graalvm.compiler.nodes.java.MethodCallTargetNode; +import org.graalvm.compiler.phases.VerifyPhase; +import org.graalvm.compiler.phases.tiers.PhaseContext; + +import jdk.vm.ci.meta.ResolvedJavaMethod; +import jdk.vm.ci.meta.ResolvedJavaType; + +/** + * Verifies a method is annotated with CallerSensitive iff it calls Reflection#getCallerClass(). + */ +public class VerifyCallerSensitiveMethods extends VerifyPhase { + + Class callerSensitiveClass; + Class reflectionClass; + + @Override + public boolean checkContract() { + return false; + } + + @SuppressWarnings("unchecked") + public VerifyCallerSensitiveMethods() { + try { + ClassLoader classLoader = ClassLoader.getSystemClassLoader(); + if (Java8OrEarlier) { + reflectionClass = classLoader.loadClass("sun.reflect.Reflection"); + callerSensitiveClass = (Class) classLoader.loadClass("sun.reflect.ConstantPool"); + } else { + reflectionClass = classLoader.loadClass("jdk.internal.reflect.Reflection"); + callerSensitiveClass = (Class) classLoader.loadClass("jdk.internal.reflect.ConstantPool"); + } + } catch (ClassNotFoundException e) { + throw new AssertionError(e); + } + } + + @Override + protected boolean verify(StructuredGraph graph, PhaseContext context) { + Invoke invoke = callsReflectionGetCallerClass(graph, context); + Annotation annotation = graph.method().getAnnotation(callerSensitiveClass); + if (invoke != null) { + if (annotation == null) { + StackTraceElement e = graph.method().asStackTraceElement(invoke.bci()); + throw new VerificationError(String.format("%s: method that calls Reflection.getCallerClass() must be annotated with @CallerSensitive", e)); + } + + } else if (annotation != null) { + throw new VerificationError(String.format("%s: method annotated with @CallerSensitive does not call Reflection.getCallerClass()", graph.method().format("%H.%n(%p)"))); + } + return true; + } + + private Invoke callsReflectionGetCallerClass(StructuredGraph graph, PhaseContext context) { + ResolvedJavaType reflectionType = context.getMetaAccess().lookupJavaType(reflectionClass); + for (MethodCallTargetNode t : graph.getNodes(MethodCallTargetNode.TYPE)) { + ResolvedJavaMethod callee = t.targetMethod(); + if (callee.getDeclaringClass().equals(reflectionType)) { + if (callee.getName().equals("getCallerClass")) { + return t.invoke(); + } + } + } + return null; + } +}