1/* 2 * Copyright (c) 2016, 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 */ 23package org.graalvm.compiler.phases.verify; 24 25import org.graalvm.compiler.core.common.PermanentBailoutException; 26import org.graalvm.compiler.core.common.RetryableBailoutException; 27import org.graalvm.compiler.debug.GraalError; 28import org.graalvm.compiler.nodes.StructuredGraph; 29import org.graalvm.compiler.nodes.java.MethodCallTargetNode; 30import org.graalvm.compiler.phases.VerifyPhase; 31import org.graalvm.compiler.phases.tiers.PhaseContext; 32 33import jdk.vm.ci.code.BailoutException; 34import jdk.vm.ci.meta.ResolvedJavaMethod; 35import jdk.vm.ci.meta.ResolvedJavaType; 36 37public class VerifyBailoutUsage extends VerifyPhase<PhaseContext> { 38 39 private static final String[] AllowedPackagePrefixes; 40 41 private static String getPackageName(Class<?> c) { 42 String classNameWithPackage = c.getName(); 43 String simpleName = c.getSimpleName(); 44 return classNameWithPackage.substring(0, classNameWithPackage.length() - simpleName.length() - 1); 45 } 46 47 static { 48 try { 49 AllowedPackagePrefixes = new String[]{getPackageName(PermanentBailoutException.class), "jdk.vm.ci"}; 50 } catch (Throwable t) { 51 throw new GraalError(t); 52 } 53 } 54 55 private static boolean matchesPrefix(String packageName) { 56 for (String allowedPackagePrefix : AllowedPackagePrefixes) { 57 if (packageName.startsWith(allowedPackagePrefix)) { 58 return true; 59 } 60 } 61 return false; 62 } 63 64 @Override 65 protected boolean verify(StructuredGraph graph, PhaseContext context) { 66 final ResolvedJavaType bailoutType = context.getMetaAccess().lookupJavaType(BailoutException.class); 67 ResolvedJavaMethod caller = graph.method(); 68 String holderQualified = caller.format("%H"); 69 String holderUnqualified = caller.format("%h"); 70 String packageName = holderQualified.substring(0, holderQualified.length() - holderUnqualified.length() - 1); 71 if (!matchesPrefix(packageName)) { 72 for (MethodCallTargetNode t : graph.getNodes(MethodCallTargetNode.TYPE)) { 73 ResolvedJavaMethod callee = t.targetMethod(); 74 if (callee.getDeclaringClass().equals(bailoutType)) { 75 // we only allow the getter 76 if (!callee.getName().equals("isPermanent")) { 77 throw new VerificationError("Call to %s at callsite %s is prohibited. Consider using %s for permanent bailouts or %s for retryables.", callee.format("%H.%n(%p)"), 78 caller.format("%H.%n(%p)"), PermanentBailoutException.class.getName(), 79 RetryableBailoutException.class.getName()); 80 } 81 } 82 } 83 } 84 return true; 85 } 86 87} 88