Mercurial > hg > truffle
annotate src/share/vm/runtime/reflectionUtils.hpp @ 13212:eb03a7335eb0
Use fixed instead of virtual register for target in far foreign call, since the register allocator does not support virtual registers to be used at call sites.
| author | Christian Wimmer <christian.wimmer@oracle.com> |
|---|---|
| date | Mon, 02 Dec 2013 14:20:32 -0800 |
| parents | ac9cb1d5a202 |
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| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1999, 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_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 // | |
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41 // for (KlassStream st(k, false, false, false); !st.eos(); st.next()) { |
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42 // Klass* k = st.klass(); |
| 0 | 43 // ... |
| 44 // } | |
| 45 | |
| 46 class KlassStream VALUE_OBJ_CLASS_SPEC { | |
| 47 protected: | |
| 48 instanceKlassHandle _klass; // current klass/interface iterated over | |
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49 instanceKlassHandle _base_klass; // initial klass/interface to iterate over |
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50 Array<Klass*>* _interfaces; // transitive interfaces for initial class |
| 0 | 51 int _interface_index; // current interface being processed |
| 52 bool _local_only; // process initial class/interface only | |
| 53 bool _classes_only; // process classes only (no interfaces) | |
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54 bool _walk_defaults; // process default methods |
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55 bool _base_class_search_defaults; // time to process default methods |
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56 bool _defaults_checked; // already checked for default methods |
| 0 | 57 int _index; |
| 58 | |
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59 virtual int length() = 0; |
| 0 | 60 |
| 61 public: | |
| 62 // constructor | |
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63 KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only, bool walk_defaults); |
| 0 | 64 |
| 65 // testing | |
| 66 bool eos(); | |
| 67 | |
| 68 // iterating | |
| 69 virtual void next() = 0; | |
| 70 | |
| 71 // accessors | |
| 72 instanceKlassHandle klass() const { return _klass; } | |
| 73 int index() const { return _index; } | |
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74 bool base_class_search_defaults() const { return _base_class_search_defaults; } |
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75 void base_class_search_defaults(bool b) { _base_class_search_defaults = b; } |
| 0 | 76 }; |
| 77 | |
| 78 | |
| 79 // A MethodStream streams over all methods in a class, superclasses and (super)interfaces. | |
| 80 // Streaming is done in reverse order (subclasses first, methods in reverse order) | |
| 81 // Usage: | |
| 82 // | |
| 83 // for (MethodStream st(k, false, false); !st.eos(); st.next()) { | |
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84 // Method* m = st.method(); |
| 0 | 85 // ... |
| 86 // } | |
| 87 | |
| 88 class MethodStream : public KlassStream { | |
| 89 private: | |
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90 int length() { return methods()->length(); } |
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91 Array<Method*>* methods() { |
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92 if (base_class_search_defaults()) { |
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93 base_class_search_defaults(false); |
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94 return _klass->default_methods(); |
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95 } else { |
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96 return _klass->methods(); |
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97 } |
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98 } |
| 0 | 99 public: |
| 100 MethodStream(instanceKlassHandle klass, bool local_only, bool classes_only) | |
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101 : KlassStream(klass, local_only, classes_only, true) { |
| 0 | 102 _index = length(); |
| 103 next(); | |
| 104 } | |
| 105 | |
| 106 void next() { _index--; } | |
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107 Method* method() { return methods()->at(index()); } |
| 0 | 108 }; |
| 109 | |
| 110 | |
| 111 // A FieldStream streams over all fields in a class, superclasses and (super)interfaces. | |
| 112 // Streaming is done in reverse order (subclasses first, fields in reverse order) | |
| 113 // Usage: | |
| 114 // | |
| 115 // for (FieldStream st(k, false, false); !st.eos(); st.next()) { | |
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116 // Symbol* field_name = st.name(); |
| 0 | 117 // ... |
| 118 // } | |
| 119 | |
| 120 | |
| 121 class FieldStream : public KlassStream { | |
| 122 private: | |
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123 int length() { return _klass->java_fields_count(); } |
| 3938 | 124 |
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125 fieldDescriptor _fd_buf; |
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126 |
| 0 | 127 public: |
| 128 FieldStream(instanceKlassHandle klass, bool local_only, bool classes_only) | |
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129 : KlassStream(klass, local_only, classes_only, false) { |
| 0 | 130 _index = length(); |
| 131 next(); | |
| 132 } | |
| 133 | |
| 3938 | 134 void next() { _index -= 1; } |
| 0 | 135 |
| 136 // Accessors for current field | |
| 137 AccessFlags access_flags() const { | |
| 138 AccessFlags flags; | |
| 3938 | 139 flags.set_flags(_klass->field_access_flags(_index)); |
| 0 | 140 return flags; |
| 141 } | |
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142 Symbol* name() const { |
| 3938 | 143 return _klass->field_name(_index); |
| 0 | 144 } |
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145 Symbol* signature() const { |
| 3938 | 146 return _klass->field_signature(_index); |
| 0 | 147 } |
| 148 // missing: initval() | |
| 149 int offset() const { | |
| 3938 | 150 return _klass->field_offset( index() ); |
| 0 | 151 } |
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152 // bridge to a heavier API: |
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153 fieldDescriptor& field_descriptor() const { |
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154 fieldDescriptor& field = const_cast<fieldDescriptor&>(_fd_buf); |
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155 field.reinitialize(_klass(), _index); |
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156 return field; |
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157 } |
| 0 | 158 }; |
| 159 | |
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160 class FilteredField : public CHeapObj<mtInternal> { |
| 0 | 161 private: |
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162 Klass* _klass; |
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163 int _field_offset; |
| 0 | 164 |
| 165 public: | |
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166 FilteredField(Klass* klass, int field_offset) { |
| 0 | 167 _klass = klass; |
| 168 _field_offset = field_offset; | |
| 169 } | |
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170 Klass* klass() { return _klass; } |
| 0 | 171 int field_offset() { return _field_offset; } |
| 172 }; | |
| 173 | |
| 174 class FilteredFieldsMap : AllStatic { | |
| 175 private: | |
| 176 static GrowableArray<FilteredField *> *_filtered_fields; | |
| 177 public: | |
| 178 static void initialize(); | |
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179 static bool is_filtered_field(Klass* klass, int field_offset) { |
| 0 | 180 for (int i=0; i < _filtered_fields->length(); i++) { |
| 181 if (klass == _filtered_fields->at(i)->klass() && | |
| 182 field_offset == _filtered_fields->at(i)->field_offset()) { | |
| 183 return true; | |
| 184 } | |
| 185 } | |
| 186 return false; | |
| 187 } | |
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188 static int filtered_fields_count(Klass* klass, bool local_only) { |
| 0 | 189 int nflds = 0; |
| 190 for (int i=0; i < _filtered_fields->length(); i++) { | |
| 191 if (local_only && klass == _filtered_fields->at(i)->klass()) { | |
| 192 nflds++; | |
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193 } else if (klass->is_subtype_of(_filtered_fields->at(i)->klass())) { |
| 0 | 194 nflds++; |
| 195 } | |
| 196 } | |
| 197 return nflds; | |
| 198 } | |
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199 // Enhance Class Redefinition Support |
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200 static void classes_do(KlassClosure* f) { |
| 0 | 201 for (int i = 0; i < _filtered_fields->length(); i++) { |
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202 f->do_klass(_filtered_fields->at(i)->klass()); |
| 0 | 203 } |
| 204 } | |
| 205 }; | |
| 206 | |
| 207 | |
| 208 // A FilteredFieldStream streams over all fields in a class, superclasses and | |
| 209 // (super)interfaces. Streaming is done in reverse order (subclasses first, | |
| 210 // fields in reverse order) | |
| 211 // | |
| 212 // Usage: | |
| 213 // | |
| 214 // for (FilteredFieldStream st(k, false, false); !st.eos(); st.next()) { | |
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215 // Symbol* field_name = st.name(); |
| 0 | 216 // ... |
| 217 // } | |
| 218 | |
| 219 class FilteredFieldStream : public FieldStream { | |
| 220 private: | |
| 221 int _filtered_fields_count; | |
| 222 bool has_filtered_field() { return (_filtered_fields_count > 0); } | |
| 223 | |
| 224 public: | |
| 225 FilteredFieldStream(instanceKlassHandle klass, bool local_only, bool classes_only) | |
| 226 : FieldStream(klass, local_only, classes_only) { | |
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227 _filtered_fields_count = FilteredFieldsMap::filtered_fields_count((Klass*)klass(), local_only); |
| 0 | 228 } |
| 229 int field_count(); | |
| 230 void next() { | |
| 3938 | 231 _index -= 1; |
| 0 | 232 if (has_filtered_field()) { |
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233 while (_index >=0 && FilteredFieldsMap::is_filtered_field((Klass*)_klass(), offset())) { |
| 3938 | 234 _index -= 1; |
| 0 | 235 } |
| 236 } | |
| 237 } | |
| 238 }; | |
| 1972 | 239 |
| 240 #endif // SHARE_VM_RUNTIME_REFLECTIONUTILS_HPP |