Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/reflectionUtils.hpp @ 4107:cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
Summary: Add a file, globals_ext.hpp, containing a null interface, to be replaced by a vendor in altsrc as needed.
Reviewed-by: coleenp, kamg, dholmes, johnc, jrose
| author | phh |
|---|---|
| date | Mon, 05 Dec 2011 12:50:00 -0500 |
| parents | e6b1331a51d2 |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2011, 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_REFLECTIONUTILS_HPP |
| 26 #define SHARE_VM_RUNTIME_REFLECTIONUTILS_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "oops/instanceKlass.hpp" | |
| 30 #include "oops/objArrayOop.hpp" | |
| 31 #include "oops/oopsHierarchy.hpp" | |
| 32 #include "runtime/handles.inline.hpp" | |
| 33 #include "runtime/reflection.hpp" | |
| 34 #include "utilities/accessFlags.hpp" | |
| 35 #include "utilities/globalDefinitions.hpp" | |
| 36 | |
| 0 | 37 // A KlassStream is an abstract stream for streaming over self, superclasses |
| 38 // and (super)interfaces. Streaming is done in reverse order (subclasses first, | |
| 39 // interfaces last). | |
| 40 // | |
| 41 // for (KlassStream st(k, false, false); !st.eos(); st.next()) { | |
| 42 // klassOop k = st.klass(); | |
| 43 // ... | |
| 44 // } | |
| 45 | |
| 46 class KlassStream VALUE_OBJ_CLASS_SPEC { | |
| 47 protected: | |
| 48 instanceKlassHandle _klass; // current klass/interface iterated over | |
| 49 objArrayHandle _interfaces; // transitive interfaces for initial class | |
| 50 int _interface_index; // current interface being processed | |
| 51 bool _local_only; // process initial class/interface only | |
| 52 bool _classes_only; // process classes only (no interfaces) | |
| 53 int _index; | |
| 54 | |
| 55 virtual int length() const = 0; | |
| 56 | |
| 57 public: | |
| 58 // constructor | |
| 59 KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only); | |
| 60 | |
| 61 // testing | |
| 62 bool eos(); | |
| 63 | |
| 64 // iterating | |
| 65 virtual void next() = 0; | |
| 66 | |
| 67 // accessors | |
| 68 instanceKlassHandle klass() const { return _klass; } | |
| 69 int index() const { return _index; } | |
| 70 }; | |
| 71 | |
| 72 | |
| 73 // A MethodStream streams over all methods in a class, superclasses and (super)interfaces. | |
| 74 // Streaming is done in reverse order (subclasses first, methods in reverse order) | |
| 75 // Usage: | |
| 76 // | |
| 77 // for (MethodStream st(k, false, false); !st.eos(); st.next()) { | |
| 78 // methodOop m = st.method(); | |
| 79 // ... | |
| 80 // } | |
| 81 | |
| 82 class MethodStream : public KlassStream { | |
| 83 private: | |
| 84 int length() const { return methods()->length(); } | |
| 85 objArrayOop methods() const { return _klass->methods(); } | |
| 86 public: | |
| 87 MethodStream(instanceKlassHandle klass, bool local_only, bool classes_only) | |
| 88 : KlassStream(klass, local_only, classes_only) { | |
| 89 _index = length(); | |
| 90 next(); | |
| 91 } | |
| 92 | |
| 93 void next() { _index--; } | |
| 94 methodOop method() const { return methodOop(methods()->obj_at(index())); } | |
| 95 }; | |
| 96 | |
| 97 | |
| 98 // A FieldStream streams over all fields in a class, superclasses and (super)interfaces. | |
| 99 // Streaming is done in reverse order (subclasses first, fields in reverse order) | |
| 100 // Usage: | |
| 101 // | |
| 102 // for (FieldStream st(k, false, false); !st.eos(); st.next()) { | |
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103 // Symbol* field_name = st.name(); |
| 0 | 104 // ... |
| 105 // } | |
| 106 | |
| 107 | |
| 108 class FieldStream : public KlassStream { | |
| 109 private: | |
| 3938 | 110 int length() const { return _klass->java_fields_count(); } |
| 111 | |
| 0 | 112 public: |
| 113 FieldStream(instanceKlassHandle klass, bool local_only, bool classes_only) | |
| 114 : KlassStream(klass, local_only, classes_only) { | |
| 115 _index = length(); | |
| 116 next(); | |
| 117 } | |
| 118 | |
| 3938 | 119 void next() { _index -= 1; } |
| 0 | 120 |
| 121 // Accessors for current field | |
| 122 AccessFlags access_flags() const { | |
| 123 AccessFlags flags; | |
| 3938 | 124 flags.set_flags(_klass->field_access_flags(_index)); |
| 0 | 125 return flags; |
| 126 } | |
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127 Symbol* name() const { |
| 3938 | 128 return _klass->field_name(_index); |
| 0 | 129 } |
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130 Symbol* signature() const { |
| 3938 | 131 return _klass->field_signature(_index); |
| 0 | 132 } |
| 133 // missing: initval() | |
| 134 int offset() const { | |
| 3938 | 135 return _klass->field_offset( index() ); |
| 0 | 136 } |
| 137 }; | |
| 138 | |
| 139 class FilteredField { | |
| 140 private: | |
| 141 klassOop _klass; | |
| 142 int _field_offset; | |
| 143 | |
| 144 public: | |
| 145 FilteredField(klassOop klass, int field_offset) { | |
| 146 _klass = klass; | |
| 147 _field_offset = field_offset; | |
| 148 } | |
| 149 klassOop klass() { return _klass; } | |
| 150 oop* klass_addr() { return (oop*) &_klass; } | |
| 151 int field_offset() { return _field_offset; } | |
| 152 }; | |
| 153 | |
| 154 class FilteredFieldsMap : AllStatic { | |
| 155 private: | |
| 156 static GrowableArray<FilteredField *> *_filtered_fields; | |
| 157 public: | |
| 158 static void initialize(); | |
| 159 static bool is_filtered_field(klassOop klass, int field_offset) { | |
| 160 for (int i=0; i < _filtered_fields->length(); i++) { | |
| 161 if (klass == _filtered_fields->at(i)->klass() && | |
| 162 field_offset == _filtered_fields->at(i)->field_offset()) { | |
| 163 return true; | |
| 164 } | |
| 165 } | |
| 166 return false; | |
| 167 } | |
| 168 static int filtered_fields_count(klassOop klass, bool local_only) { | |
| 169 int nflds = 0; | |
| 170 for (int i=0; i < _filtered_fields->length(); i++) { | |
| 171 if (local_only && klass == _filtered_fields->at(i)->klass()) { | |
| 172 nflds++; | |
| 173 } else if (klass->klass_part()->is_subtype_of(_filtered_fields->at(i)->klass())) { | |
| 174 nflds++; | |
| 175 } | |
| 176 } | |
| 177 return nflds; | |
| 178 } | |
| 179 // GC support. | |
| 180 static void klasses_oops_do(OopClosure* f) { | |
| 181 for (int i = 0; i < _filtered_fields->length(); i++) { | |
| 182 f->do_oop((oop*)_filtered_fields->at(i)->klass_addr()); | |
| 183 } | |
| 184 } | |
| 185 }; | |
| 186 | |
| 187 | |
| 188 // A FilteredFieldStream streams over all fields in a class, superclasses and | |
| 189 // (super)interfaces. Streaming is done in reverse order (subclasses first, | |
| 190 // fields in reverse order) | |
| 191 // | |
| 192 // Usage: | |
| 193 // | |
| 194 // for (FilteredFieldStream st(k, false, false); !st.eos(); st.next()) { | |
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195 // Symbol* field_name = st.name(); |
| 0 | 196 // ... |
| 197 // } | |
| 198 | |
| 199 class FilteredFieldStream : public FieldStream { | |
| 200 private: | |
| 201 int _filtered_fields_count; | |
| 202 bool has_filtered_field() { return (_filtered_fields_count > 0); } | |
| 203 | |
| 204 public: | |
| 205 FilteredFieldStream(instanceKlassHandle klass, bool local_only, bool classes_only) | |
| 206 : FieldStream(klass, local_only, classes_only) { | |
| 207 _filtered_fields_count = FilteredFieldsMap::filtered_fields_count((klassOop)klass(), local_only); | |
| 208 } | |
| 209 int field_count(); | |
| 210 void next() { | |
| 3938 | 211 _index -= 1; |
| 0 | 212 if (has_filtered_field()) { |
| 213 while (_index >=0 && FilteredFieldsMap::is_filtered_field((klassOop)_klass(), offset())) { | |
| 3938 | 214 _index -= 1; |
| 0 | 215 } |
| 216 } | |
| 217 } | |
| 218 }; | |
| 1972 | 219 |
| 220 #endif // SHARE_VM_RUNTIME_REFLECTIONUTILS_HPP |