Mercurial > hg > truffle
annotate test/runtime/finalStatic/FinalStatic.java @ 20218:828056cf311f
8040792: G1: Memory usage calculation uses sizeof(this) instead of sizeof(classname)
Summary: A few locations in the code use sizeof(this) which returns the size of the pointer instead of sizeof(classname) which returns the size of the sum of its members. This change fixes these errors and adds a few tests.
Reviewed-by: mgerdin, brutisso
author | tschatzl |
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date | Mon, 21 Jul 2014 09:40:19 +0200 |
parents | 4638c4d7ff10 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 /* |
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25 * @test |
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26 * @bug 8028553 |
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27 * @summary Test that VerifyError is not thrown when 'overriding' a static method. |
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28 * @run main FinalStatic |
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29 */ |
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30 |
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31 import java.lang.reflect.*; |
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32 import jdk.internal.org.objectweb.asm.ClassWriter; |
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33 import jdk.internal.org.objectweb.asm.MethodVisitor; |
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34 import jdk.internal.org.objectweb.asm.Opcodes; |
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35 |
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36 /* |
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37 * class A { static final int m() {return FAIL; } } |
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38 * class B extends A { int m() { return PASS; } } |
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39 * class FinalStatic { |
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40 * public static void main () { |
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41 * Object b = new B(); |
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42 * b.m(); |
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43 * } |
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44 * } |
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45 */ |
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46 public class FinalStatic { |
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47 |
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48 static final String CLASS_NAME_A = "A"; |
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49 static final String CLASS_NAME_B = "B"; |
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50 static final int FAILED = 0; |
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51 static final int EXPECTED = 1234; |
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52 |
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53 static class TestClassLoader extends ClassLoader implements Opcodes { |
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54 |
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55 @Override |
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56 public Class findClass(String name) throws ClassNotFoundException { |
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57 byte[] b; |
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58 try { |
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59 b = loadClassData(name); |
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60 } catch (Throwable th) { |
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61 // th.printStackTrace(); |
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62 throw new ClassNotFoundException("Loading error", th); |
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63 } |
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64 return defineClass(name, b, 0, b.length); |
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65 } |
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66 |
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67 private byte[] loadClassData(String name) throws Exception { |
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68 ClassWriter cw = new ClassWriter(0); |
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69 MethodVisitor mv; |
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70 switch (name) { |
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71 case CLASS_NAME_A: |
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72 cw.visit(52, ACC_SUPER | ACC_PUBLIC, CLASS_NAME_A, null, "java/lang/Object", null); |
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73 { |
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74 mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
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75 mv.visitCode(); |
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76 mv.visitVarInsn(ALOAD, 0); |
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77 mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); |
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78 mv.visitInsn(RETURN); |
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79 mv.visitMaxs(1, 1); |
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80 mv.visitEnd(); |
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81 |
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82 mv = cw.visitMethod(ACC_FINAL | ACC_STATIC, "m", "()I", null, null); |
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83 mv.visitCode(); |
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84 mv.visitLdcInsn(FAILED); |
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85 mv.visitInsn(IRETURN); |
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86 mv.visitMaxs(1, 1); |
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87 mv.visitEnd(); |
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88 } |
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89 break; |
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90 case CLASS_NAME_B: |
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91 cw.visit(52, ACC_SUPER | ACC_PUBLIC, CLASS_NAME_B, null, CLASS_NAME_A, null); |
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92 { |
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93 mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
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94 mv.visitCode(); |
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95 mv.visitVarInsn(ALOAD, 0); |
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96 mv.visitMethodInsn(INVOKESPECIAL, CLASS_NAME_A, "<init>", "()V"); |
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97 mv.visitInsn(RETURN); |
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98 mv.visitMaxs(1, 1); |
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99 mv.visitEnd(); |
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100 |
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101 mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null); |
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102 mv.visitCode(); |
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103 mv.visitLdcInsn(EXPECTED); |
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104 mv.visitInsn(IRETURN); |
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105 mv.visitMaxs(1, 1); |
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106 mv.visitEnd(); |
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107 |
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108 } |
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109 break; |
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110 default: |
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111 break; |
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112 } |
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113 cw.visitEnd(); |
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114 |
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115 return cw.toByteArray(); |
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116 } |
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117 } |
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118 |
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119 public static void main(String[] args) throws Exception { |
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120 TestClassLoader tcl = new TestClassLoader(); |
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121 Class<?> a = tcl.loadClass(CLASS_NAME_A); |
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122 Class<?> b = tcl.loadClass(CLASS_NAME_B); |
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123 Object inst = b.newInstance(); |
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124 Method[] meths = b.getDeclaredMethods(); |
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125 |
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126 Method m = meths[0]; |
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127 int mod = m.getModifiers(); |
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128 if ((mod & Modifier.FINAL) != 0) { |
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129 throw new Exception("FAILED: " + m + " is FINAL"); |
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130 } |
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131 if ((mod & Modifier.STATIC) != 0) { |
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132 throw new Exception("FAILED: " + m + " is STATIC"); |
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133 } |
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134 |
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135 m.setAccessible(true); |
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136 if (!m.invoke(inst).equals(EXPECTED)) { |
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137 throw new Exception("FAILED: " + EXPECTED + " from " + m); |
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138 } |
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139 |
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140 System.out.println("Passed."); |
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141 } |
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142 } |