Mercurial > hg > graal-compiler

annotate test/compiler/jsr292/VMAnonymousClasses.java @ 21673:5024c80224c7

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moved com.oracle.graal.[amd64|sparc] to com.oracle.jvmci.[amd64|sparc] (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Tue, 02 Jun 2015 22:11:52 +0200
parents 9dc314de223d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 8058828
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27 * @run main/bootclasspath -Xbatch VMAnonymousClasses
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28 */
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29
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30 import jdk.internal.org.objectweb.asm.ClassWriter;
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31 import jdk.internal.org.objectweb.asm.MethodVisitor;
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32 import jdk.internal.org.objectweb.asm.Opcodes;
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33 import sun.misc.Unsafe;
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34
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35 import java.lang.invoke.ConstantCallSite;
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36 import java.lang.invoke.MethodHandle;
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37 import java.lang.invoke.MethodHandles;
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38 import java.lang.invoke.MethodType;
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39 import java.lang.invoke.MutableCallSite;
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40 import java.lang.invoke.VolatileCallSite;
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41
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42 public class VMAnonymousClasses {
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43 static final String TEST_METHOD_NAME = "constant";
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44
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45 static final Unsafe UNSAFE = Unsafe.getUnsafe();
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46
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47 static int getConstantPoolSize(byte[] classFile) {
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48 // The first few bytes:
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49 // u4 magic;
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50 // u2 minor_version;
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51 // u2 major_version;
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52 // u2 constant_pool_count;
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53 return ((classFile[8] & 0xFF) << 8) | (classFile[9] & 0xFF);
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54 }
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55
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56 static void test(Object value) throws ReflectiveOperationException {
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57 System.out.printf("Test: %s", value != null ? value.getClass() : "null");
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58
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59 ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
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60 cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC | Opcodes.ACC_SUPER, "Test", null, "java/lang/Object", null);
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61
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62 MethodVisitor mv = cw.visitMethod(Opcodes.ACC_STATIC | Opcodes.ACC_PUBLIC, TEST_METHOD_NAME, "()Ljava/lang/Object;", null, null);
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63
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64 String placeholder = "CONSTANT";
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65 int index = cw.newConst(placeholder);
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66 mv.visitLdcInsn(placeholder);
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67 mv.visitInsn(Opcodes.ARETURN);
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68
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69 mv.visitMaxs(0, 0);
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70 mv.visitEnd();
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71
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72 byte[] classFile = cw.toByteArray();
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73
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74 Object[] cpPatches = new Object[getConstantPoolSize(classFile)];
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75 cpPatches[index] = value;
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76
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77 Class<?> test = UNSAFE.defineAnonymousClass(VMAnonymousClasses.class, classFile, cpPatches);
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78
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79 Object expectedResult = (value != null) ? value : placeholder;
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80 for (int i = 0; i<15000; i++) {
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81 Object result = test.getMethod(TEST_METHOD_NAME).invoke(null);
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82 if (result != expectedResult) {
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83 throw new AssertionError(String.format("Wrong value returned: %s != %s", value, result));
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84 }
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85 }
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86 System.out.println(" PASSED");
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87 }
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88
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89 public static void main(String[] args) throws ReflectiveOperationException {
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90 // Objects
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91 test(new Object());
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92 test("TEST");
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93 test(new VMAnonymousClasses());
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94 test(null);
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95
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96 // Class
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97 test(String.class);
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98
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99 // Arrays
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100 test(new boolean[0]);
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101 test(new byte[0]);
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102 test(new char[0]);
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103 test(new short[0]);
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104 test(new int[0]);
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105 test(new long[0]);
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106 test(new float[0]);
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107 test(new double[0]);
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108 test(new Object[0]);
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109
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110 // Multi-dimensional arrays
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111 test(new byte[0][0]);
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112 test(new Object[0][0]);
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113
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114 // MethodHandle-related
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115 MethodType mt = MethodType.methodType(void.class, String[].class);
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116 MethodHandle mh = MethodHandles.lookup().findStatic(VMAnonymousClasses.class, "main", mt);
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117 test(mt);
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118 test(mh);
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119 test(new ConstantCallSite(mh));
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120 test(new MutableCallSite(MethodType.methodType(void.class)));
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121 test(new VolatileCallSite(MethodType.methodType(void.class)));
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122
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123 System.out.println("TEST PASSED");
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124 }
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125 }