122
123 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
124 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
125 count++; \
126 if (start == -1) start = klass##_##name##_enum; \
127 }
128 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
129 #undef LOOKUP_INJECTED_FIELD
130
131 if (start != -1) {
132 *field_count = count;
133 return _injected_fields + start;
134 }
135 return NULL;
136 }
137
138
139 // Helpful routine for computing field offsets at run time rather than hardcoding them
140 // Finds local fields only, including static fields. Static field offsets are from the
141 // beginning of the mirror.
142 void JavaClasses::compute_offset(int &dest_offset,
143 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
144 bool is_static) {
145 fieldDescriptor fd;
146 if (ik == NULL) {
147 ResourceMark rm;
148 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
149 vm_exit_during_initialization("Invalid layout of well-known class");
150 }
151
152 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
153 ResourceMark rm;
154 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
155 name_symbol->as_C_string(), signature_symbol->as_C_string());
156 #ifndef PRODUCT
157 // Prints all fields and offsets
158 Log(class) lt;
159 LogStream ls(lt.error());
160 ik->print_on(&ls);
161 #endif //PRODUCT
162 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
163 }
164 dest_offset = fd.offset();
165 }
166
167 // Overloading to pass name as a string.
168 void JavaClasses::compute_offset(int& dest_offset, InstanceKlass* ik,
169 const char* name_string, Symbol* signature_symbol,
170 bool is_static) {
171 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
172 if (name == NULL) {
173 ResourceMark rm;
174 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
175 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
176 }
177 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
178 }
179
180
181 #if INCLUDE_CDS
182 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
183 f->do_u4((u4*)&offset)
184 #endif
185
186 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
187 JavaClasses::compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
188
189
190 // java_lang_String
191
192 int java_lang_String::_value_offset;
193 int java_lang_String::_hash_offset;
194 int java_lang_String::_hashIsZero_offset;
195 int java_lang_String::_coder_offset;
196
197 bool java_lang_String::_initialized;
198
199 bool java_lang_String::is_instance(oop obj) {
200 return is_instance_inlined(obj);
201 }
202
203 #define STRING_FIELDS_DO(macro) \
204 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
205 macro(_hash_offset, k, "hash", int_signature, false); \
206 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
207 macro(_coder_offset, k, "coder", byte_signature, false);
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122
123 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
124 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
125 count++; \
126 if (start == -1) start = klass##_##name##_enum; \
127 }
128 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
129 #undef LOOKUP_INJECTED_FIELD
130
131 if (start != -1) {
132 *field_count = count;
133 return _injected_fields + start;
134 }
135 return NULL;
136 }
137
138
139 // Helpful routine for computing field offsets at run time rather than hardcoding them
140 // Finds local fields only, including static fields. Static field offsets are from the
141 // beginning of the mirror.
142 static void compute_offset(int &dest_offset,
143 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
144 bool is_static = false) {
145 fieldDescriptor fd;
146 if (ik == NULL) {
147 ResourceMark rm;
148 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
149 vm_exit_during_initialization("Invalid layout of well-known class");
150 }
151
152 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
153 ResourceMark rm;
154 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
155 name_symbol->as_C_string(), signature_symbol->as_C_string());
156 #ifndef PRODUCT
157 // Prints all fields and offsets
158 Log(class) lt;
159 LogStream ls(lt.error());
160 ik->print_on(&ls);
161 #endif //PRODUCT
162 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
163 }
164 dest_offset = fd.offset();
165 }
166
167 // Overloading to pass name as a string.
168 static void compute_offset(int& dest_offset, InstanceKlass* ik,
169 const char* name_string, Symbol* signature_symbol,
170 bool is_static = false) {
171 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
172 if (name == NULL) {
173 ResourceMark rm;
174 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
175 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
176 }
177 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
178 }
179
180
181 #if INCLUDE_CDS
182 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
183 f->do_u4((u4*)&offset)
184 #endif
185
186 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
187 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
188
189
190 // java_lang_String
191
192 int java_lang_String::_value_offset;
193 int java_lang_String::_hash_offset;
194 int java_lang_String::_hashIsZero_offset;
195 int java_lang_String::_coder_offset;
196
197 bool java_lang_String::_initialized;
198
199 bool java_lang_String::is_instance(oop obj) {
200 return is_instance_inlined(obj);
201 }
202
203 #define STRING_FIELDS_DO(macro) \
204 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
205 macro(_hash_offset, k, "hash", int_signature, false); \
206 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
207 macro(_coder_offset, k, "coder", byte_signature, false);
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