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.serviceprovider; 26 27 import java.util.ArrayList; 28 29 import jdk.vm.ci.code.BytecodePosition; 30 31 class SpeculationEncodingAdapter implements SpeculationReasonGroup.SpeculationContextObject.Visitor { 32 private ArrayList<Object> objects; 33 34 SpeculationEncodingAdapter() { 35 this.objects = null; 36 } 37 38 Object[] flatten(Object[] context) { 39 boolean flatten = false; 40 for (Object c : context) { 41 if (c instanceof SpeculationReasonGroup.SpeculationContextObject || (c != null && c.getClass() == BytecodePosition.class)) { 42 // Needs extra work to flatten the representation 43 flatten = true; 44 break; 45 } 46 } 47 if (!flatten) { 48 return context; 49 } 50 objects = new ArrayList<>(); 51 for (Object c : context) { 52 if (c instanceof SpeculationReasonGroup.SpeculationContextObject) { 53 SpeculationReasonGroup.SpeculationContextObject sco = (SpeculationReasonGroup.SpeculationContextObject) c; 54 // These are compiler objects which all have the same class 55 // loader so the class name uniquely identifies the class. 56 objects.add(c.getClass().getName()); 57 sco.accept(this); 58 } else if (c != null && c.getClass() == BytecodePosition.class) { 59 BytecodePosition p = (BytecodePosition) c; 60 objects.add(c.getClass().getName()); 61 while (p != null) { 62 visitInt(p.getBCI()); 63 objects.add(p.getMethod()); 64 p = p.getCaller(); 65 } 66 } else { 67 objects.add(c); 68 } 69 } 70 return objects.toArray(); 71 } 72 73 @Override 74 public void visitBoolean(boolean v) { 75 objects.add((byte) (v ? 1 : 0)); 76 } 77 78 @Override 79 public void visitByte(byte v) { 80 objects.add(v); 81 } 82 83 @Override 84 public void visitChar(char v) { 85 objects.add(v); 86 } 87 88 @Override 89 public void visitShort(short v) { 90 objects.add(v); 91 } 92 93 @Override 94 public void visitInt(int v) { 95 objects.add(v); 96 } 97 98 @Override 99 public void visitLong(long v) { 100 objects.add(v); 101 } 102 103 @Override 104 public void visitFloat(float v) { 105 objects.add(Float.floatToRawIntBits(v)); 106 } 107 108 @Override 109 public void visitDouble(double v) { 110 objects.add(Double.doubleToRawLongBits(v)); 111 } 112 113 @Override 114 public void visitObject(Object v) { 115 if (v == null) { 116 objects.add(0); 117 } else { 118 objects.add(v); 119 } 120 } 121 }