1 /* 2 * Copyright (c) 2019, 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.hotspot.meta; 26 27 import static org.graalvm.compiler.bytecode.Bytecodes.GETSTATIC; 28 import static org.graalvm.compiler.bytecode.Bytecodes.INVOKESTATIC; 29 import static org.graalvm.compiler.bytecode.Bytecodes.NEW; 30 import static org.graalvm.compiler.bytecode.Bytecodes.PUTSTATIC; 31 32 import java.util.function.Supplier; 33 34 import org.graalvm.compiler.hotspot.nodes.KlassBeingInitializedCheckNode; 35 import org.graalvm.compiler.hotspot.nodes.type.KlassPointerStamp; 36 import org.graalvm.compiler.nodes.ConstantNode; 37 import org.graalvm.compiler.nodes.FrameState; 38 import org.graalvm.compiler.nodes.ValueNode; 39 import org.graalvm.compiler.nodes.graphbuilderconf.ClassInitializationPlugin; 40 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext; 41 42 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType; 43 import jdk.vm.ci.meta.ConstantPool; 44 import jdk.vm.ci.meta.ResolvedJavaType; 45 46 public final class HotSpotJITClassInitializationPlugin implements ClassInitializationPlugin { 47 @Override 48 public boolean apply(GraphBuilderContext builder, ResolvedJavaType type, Supplier<FrameState> frameState, ValueNode[] classInit) { 49 if (!type.isInitialized() && (type.isInstanceClass() || type.isInterface())) { 50 int code = builder.getCode().getCode()[builder.bci()] & 0xff; 51 switch (code) { 52 case INVOKESTATIC: 53 case GETSTATIC: 54 case PUTSTATIC: 55 case NEW: 56 ValueNode typeConstant = ConstantNode.forConstant(KlassPointerStamp.klass(), ((HotSpotResolvedObjectType) type).klass(), builder.getMetaAccess()); 57 builder.add(new KlassBeingInitializedCheckNode(typeConstant)); 58 return true; 59 default: 60 61 } 62 } 63 return false; 64 } 65 66 @Override 67 public boolean supportsLazyInitialization(ConstantPool cp) { 68 return false; 69 } 70 71 @Override 72 public void loadReferencedType(GraphBuilderContext builder, ConstantPool cp, int cpi, int opcode) { 73 cp.loadReferencedType(cpi, opcode); 74 } 75 76 }