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annotate src/share/vm/runtime/reflection.hpp @ 18096:ca6d25be853b jdk8u25-b13
8044269: Analysis of archive files.
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Reviewed-by: iklam, dholmes, mschoene
| author | jiangli |
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| date | Tue, 12 Aug 2014 17:46:16 -0400 |
| parents | 55fb97c4c58d |
| children | 63a4eb8bcd23 |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_RUNTIME_REFLECTION_HPP |
| 26 #define SHARE_VM_RUNTIME_REFLECTION_HPP | |
| 27 | |
| 28 #include "oops/oop.hpp" | |
| 29 #include "runtime/fieldDescriptor.hpp" | |
| 30 #include "utilities/accessFlags.hpp" | |
| 31 #include "utilities/growableArray.hpp" | |
| 32 | |
| 0 | 33 // Class Reflection contains utility methods needed for implementing the |
| 34 // reflection api. | |
| 35 // | |
| 36 // Used by functions in the JVM interface. | |
| 37 // | |
| 38 // NOTE that in JDK 1.4 most of reflection is now implemented in Java | |
| 39 // using dynamic bytecode generation. The Array class has not yet been | |
| 40 // rewritten using bytecodes; if it were, most of the rest of this | |
| 41 // class could go away, as well as a few more entry points in jvm.cpp. | |
| 42 | |
| 43 class FieldStream; | |
| 44 | |
| 45 class Reflection: public AllStatic { | |
| 46 private: | |
| 47 // Access checking | |
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48 static bool reflect_check_access(Klass* field_class, AccessFlags acc, Klass* target_class, bool is_method_invoke, TRAPS); |
| 0 | 49 |
| 50 // Conversion | |
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51 static Klass* basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS); |
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52 static oop basic_type_arrayklass_to_mirror(Klass* basic_type_arrayklass, TRAPS); |
| 0 | 53 |
| 54 static objArrayHandle get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS); | |
| 55 static objArrayHandle get_exception_types(methodHandle method, TRAPS); | |
| 56 // Creating new java.lang.reflect.xxx wrappers | |
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57 static Handle new_type(Symbol* signature, KlassHandle k, TRAPS); |
| 0 | 58 |
| 59 public: | |
| 60 // Constants defined by java reflection api classes | |
| 61 enum SomeConstants { | |
| 62 PUBLIC = 0, | |
| 63 DECLARED = 1, | |
| 64 MEMBER_PUBLIC = 0, | |
| 65 MEMBER_DECLARED = 1, | |
| 66 MAX_DIM = 255 | |
| 67 }; | |
| 68 | |
| 69 // Boxing. Returns boxed value of appropriate type. Throws IllegalArgumentException. | |
| 70 static oop box(jvalue* v, BasicType type, TRAPS); | |
| 71 // Unboxing. Returns type code and sets value. | |
| 72 static BasicType unbox_for_primitive(oop boxed_value, jvalue* value, TRAPS); | |
| 73 static BasicType unbox_for_regular_object(oop boxed_value, jvalue* value); | |
| 74 | |
| 75 // Widening of basic types. Throws IllegalArgumentException. | |
| 76 static void widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS); | |
| 77 | |
| 78 // Reflective array access. Returns type code. Throws ArrayIndexOutOfBoundsException. | |
| 79 static BasicType array_get(jvalue* value, arrayOop a, int index, TRAPS); | |
| 80 static void array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS); | |
| 81 // Returns mirror on array element type (NULL for basic type arrays and non-arrays). | |
| 82 static oop array_component_type(oop mirror, TRAPS); | |
| 83 | |
| 84 // Object creation | |
| 85 static arrayOop reflect_new_array(oop element_mirror, jint length, TRAPS); | |
| 86 static arrayOop reflect_new_multi_array(oop element_mirror, typeArrayOop dimensions, TRAPS); | |
| 87 | |
| 88 // Verification | |
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89 static bool verify_class_access(Klass* current_class, Klass* new_class, bool classloader_only); |
| 0 | 90 |
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91 static bool verify_field_access(Klass* current_class, |
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92 Klass* resolved_class, |
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93 Klass* field_class, |
| 0 | 94 AccessFlags access, |
| 95 bool classloader_only, | |
| 96 bool protected_restriction = false); | |
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97 static bool is_same_class_package(Klass* class1, Klass* class2); |
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98 static bool is_same_package_member(Klass* class1, Klass* class2, TRAPS); |
| 0 | 99 |
| 100 static bool can_relax_access_check_for( | |
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101 Klass* accessor, Klass* accesee, bool classloader_only); |
| 0 | 102 |
| 103 // inner class reflection | |
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104 // raise an ICCE unless the required relationship can be proven to hold |
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105 // If inner_is_member, require the inner to be a member of the outer. |
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106 // If !inner_is_member, require the inner to be anonymous (a non-member). |
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107 // Caller is responsible for figuring out in advance which case must be true. |
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108 static void check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, |
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109 bool inner_is_member, TRAPS); |
| 0 | 110 |
| 111 // | |
| 112 // Support for reflection based on dynamic bytecode generation (JDK 1.4) | |
| 113 // | |
| 114 | |
| 115 // Create a java.lang.reflect.Method object based on a method | |
| 116 static oop new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS); | |
| 117 // Create a java.lang.reflect.Constructor object based on a method | |
| 118 static oop new_constructor(methodHandle method, TRAPS); | |
| 119 // Create a java.lang.reflect.Field object based on a field descriptor | |
| 120 static oop new_field(fieldDescriptor* fd, bool intern_name, TRAPS); | |
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121 // Create a java.lang.reflect.Parameter object based on a |
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122 // MethodParameterElement |
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123 static oop new_parameter(Handle method, int index, Symbol* sym, |
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124 int flags, TRAPS); |
| 0 | 125 |
| 126 private: | |
| 127 // method resolution for invoke | |
| 128 static methodHandle resolve_interface_call(instanceKlassHandle klass, methodHandle method, KlassHandle recv_klass, Handle receiver, TRAPS); | |
| 129 // Method call (shared by invoke_method and invoke_constructor) | |
| 130 static oop invoke(instanceKlassHandle klass, methodHandle method, Handle receiver, bool override, objArrayHandle ptypes, BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS); | |
| 131 | |
| 132 // Narrowing of basic types. Used to create correct jvalues for | |
| 133 // boolean, byte, char and short return return values from interpreter | |
| 134 // which are returned as ints. Throws IllegalArgumentException. | |
| 135 static void narrow(jvalue* value, BasicType narrow_type, TRAPS); | |
| 136 | |
| 137 // Conversion | |
| 138 static BasicType basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS); | |
| 139 | |
| 140 public: | |
| 141 // Method invokation through java.lang.reflect.Method | |
| 142 static oop invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS); | |
| 143 // Method invokation through java.lang.reflect.Constructor | |
| 144 static oop invoke_constructor(oop method_mirror, objArrayHandle args, TRAPS); | |
| 145 | |
| 146 }; | |
| 1972 | 147 |
| 148 #endif // SHARE_VM_RUNTIME_REFLECTION_HPP |