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src/hotspot/share/runtime/fieldDescriptor.cpp

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 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  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  *
 23  */
 24 
 25 #include "precompiled.hpp"
 26 #include "classfile/vmSymbols.hpp"
 27 #include "memory/resourceArea.hpp"
 28 #include "oops/annotations.hpp"
 29 #include "oops/constantPool.hpp"
 30 #include "oops/instanceKlass.hpp"
 31 #include "oops/klass.inline.hpp"
 32 #include "oops/oop.inline.hpp"
 33 #include "oops/fieldStreams.inline.hpp"

 34 #include "runtime/fieldDescriptor.inline.hpp"
 35 #include "runtime/handles.inline.hpp"
 36 #include "runtime/signature.hpp"
 37 
 38 Symbol* fieldDescriptor::generic_signature() const {
 39   if (!has_generic_signature()) {
 40     return nullptr;
 41   }
 42   return _cp->symbol_at(_fieldinfo.generic_signature_index());
 43 }
 44 
 45 bool fieldDescriptor::is_trusted_final() const {
 46   InstanceKlass* ik = field_holder();
 47   return is_final() && (is_static() || ik->is_hidden() || ik->is_record());

 48 }
 49 
 50 AnnotationArray* fieldDescriptor::annotations() const {
 51   InstanceKlass* ik = field_holder();
 52   Array<AnnotationArray*>* md = ik->fields_annotations();
 53   if (md == nullptr)
 54     return nullptr;
 55   return md->at(index());
 56 }
 57 
 58 AnnotationArray* fieldDescriptor::type_annotations() const {
 59   InstanceKlass* ik = field_holder();
 60   Array<AnnotationArray*>* type_annos = ik->fields_type_annotations();
 61   if (type_annos == nullptr)
 62     return nullptr;
 63   return type_annos->at(index());
 64 }
 65 
 66 constantTag fieldDescriptor::initial_value_tag() const {
 67   return constants()->tag_at(initial_value_index());

108   signature()->print_value_on(st);
109   st->print(" @%d ", offset());
110   if (WizardMode && has_initial_value()) {
111     st->print("(initval ");
112     constantTag t = initial_value_tag();
113     if (t.is_int()) {
114       st->print("int %d)", int_initial_value());
115     } else if (t.is_long()){
116       st->print_jlong(long_initial_value());
117     } else if (t.is_float()){
118       st->print("float %f)", float_initial_value());
119     } else if (t.is_double()){
120       st->print("double %lf)", double_initial_value());
121     }
122   }
123 }
124 
125 void fieldDescriptor::print() const { print_on(tty); }
126 
127 void fieldDescriptor::print_on_for(outputStream* st, oop obj) {
128   print_on(st);
129   st->print(" ");
130 
131   BasicType ft = field_type();





132   switch (ft) {
133     case T_BYTE:
134       st->print("%d", obj->byte_field(offset()));
135       break;
136     case T_CHAR:
137       {
138         jchar c = obj->char_field(offset());
139         st->print("%c %d", isprint(c) ? c : ' ', c);
140       }
141       break;
142     case T_DOUBLE:
143       st->print("%lf", obj->double_field(offset()));
144       break;
145     case T_FLOAT:
146       st->print("%f", obj->float_field(offset()));
147       break;
148     case T_INT:
149       st->print("%d", obj->int_field(offset()));
150       break;
151     case T_LONG:
152       st->print_jlong(obj->long_field(offset()));
153       break;
154     case T_SHORT:
155       st->print("%d", obj->short_field(offset()));
156       break;
157     case T_BOOLEAN:
158       st->print("%s", obj->bool_field(offset()) ? "true" : "false");
159       break;
160     case T_ARRAY:
161       if (obj->obj_field(offset()) != nullptr) {
162         obj->obj_field(offset())->print_value_on(st);
163       } else {
164         st->print("null");
165       }
166       break;
167     case T_OBJECT:












168       if (obj->obj_field(offset()) != nullptr) {
169         obj->obj_field(offset())->print_value_on(st);
170       } else {
171         st->print("null");
172       }
173       break;
174     default:
175       ShouldNotReachHere();
176       break;
177   }
178 
179   // Print a hint as to the underlying integer representation.
180   if (is_reference_type(ft)) {
181 #ifdef _LP64
182     if (UseCompressedOops) {
183       st->print(" (" INT32_FORMAT_X_0 ")", obj->int_field(offset()));
184     } else {
185       st->print(" (" INT64_FORMAT_X_0 ")", (int64_t)obj->long_field(offset()));
186     }
187 #else

 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  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  *
 23  */
 24 
 25 #include "precompiled.hpp"
 26 #include "classfile/vmSymbols.hpp"
 27 #include "memory/resourceArea.hpp"
 28 #include "oops/annotations.hpp"
 29 #include "oops/constantPool.hpp"
 30 #include "oops/instanceKlass.hpp"
 31 #include "oops/klass.inline.hpp"
 32 #include "oops/oop.inline.hpp"
 33 #include "oops/fieldStreams.inline.hpp"
 34 #include "oops/inlineKlass.inline.hpp"
 35 #include "runtime/fieldDescriptor.inline.hpp"
 36 #include "runtime/handles.inline.hpp"
 37 #include "runtime/signature.hpp"
 38 
 39 Symbol* fieldDescriptor::generic_signature() const {
 40   if (!has_generic_signature()) {
 41     return nullptr;
 42   }
 43   return _cp->symbol_at(_fieldinfo.generic_signature_index());
 44 }
 45 
 46 bool fieldDescriptor::is_trusted_final() const {
 47   InstanceKlass* ik = field_holder();
 48   return is_final() && (is_static() || ik->is_hidden() || ik->is_record() || ik->is_inline_klass()
 49                         || (ik->is_abstract() && !ik->is_identity_class() && !ik->is_interface()));
 50 }
 51 
 52 AnnotationArray* fieldDescriptor::annotations() const {
 53   InstanceKlass* ik = field_holder();
 54   Array<AnnotationArray*>* md = ik->fields_annotations();
 55   if (md == nullptr)
 56     return nullptr;
 57   return md->at(index());
 58 }
 59 
 60 AnnotationArray* fieldDescriptor::type_annotations() const {
 61   InstanceKlass* ik = field_holder();
 62   Array<AnnotationArray*>* type_annos = ik->fields_type_annotations();
 63   if (type_annos == nullptr)
 64     return nullptr;
 65   return type_annos->at(index());
 66 }
 67 
 68 constantTag fieldDescriptor::initial_value_tag() const {
 69   return constants()->tag_at(initial_value_index());

110   signature()->print_value_on(st);
111   st->print(" @%d ", offset());
112   if (WizardMode && has_initial_value()) {
113     st->print("(initval ");
114     constantTag t = initial_value_tag();
115     if (t.is_int()) {
116       st->print("int %d)", int_initial_value());
117     } else if (t.is_long()){
118       st->print_jlong(long_initial_value());
119     } else if (t.is_float()){
120       st->print("float %f)", float_initial_value());
121     } else if (t.is_double()){
122       st->print("double %lf)", double_initial_value());
123     }
124   }
125 }
126 
127 void fieldDescriptor::print() const { print_on(tty); }
128 
129 void fieldDescriptor::print_on_for(outputStream* st, oop obj) {



130   BasicType ft = field_type();
131   if (!is_null_free_inline_type()) {
132     print_on(st);
133     st->print(" ");
134   }
135   jint as_int = 0;
136   switch (ft) {
137     case T_BYTE:
138       st->print("%d", obj->byte_field(offset()));
139       break;
140     case T_CHAR:
141       {
142         jchar c = obj->char_field(offset());
143         st->print("%c %d", isprint(c) ? c : ' ', c);
144       }
145       break;
146     case T_DOUBLE:
147       st->print("%lf", obj->double_field(offset()));
148       break;
149     case T_FLOAT:
150       st->print("%f", obj->float_field(offset()));
151       break;
152     case T_INT:
153       st->print("%d", obj->int_field(offset()));
154       break;
155     case T_LONG:
156       st->print_jlong(obj->long_field(offset()));
157       break;
158     case T_SHORT:
159       st->print("%d", obj->short_field(offset()));
160       break;
161     case T_BOOLEAN:
162       st->print("%s", obj->bool_field(offset()) ? "true" : "false");
163       break;
164     case T_ARRAY:






165     case T_OBJECT:
166       if (is_flat()) { // only some inline types can be flat
167         assert(is_null_free_inline_type(), "Only null free inline type fields can be flat");
168         // Print fields of flat fields (recursively)
169         InlineKlass* vk = InlineKlass::cast(field_holder()->get_inline_type_field_klass(index()));
170         int field_offset = offset() - vk->first_field_offset();
171         obj = cast_to_oop(cast_from_oop<address>(obj) + field_offset);
172         st->print_cr("Flat inline type field '%s':", vk->name()->as_C_string());
173         FieldPrinter print_field(st, obj);
174         vk->do_nonstatic_fields(&print_field);
175         return; // Do not print underlying representation
176       }
177       // Not flat inline type field, fall through
178       if (obj->obj_field(offset()) != nullptr) {
179         obj->obj_field(offset())->print_value_on(st);
180       } else {
181         st->print("null");
182       }
183       break;
184     default:
185       ShouldNotReachHere();
186       break;
187   }
188 
189   // Print a hint as to the underlying integer representation.
190   if (is_reference_type(ft)) {
191 #ifdef _LP64
192     if (UseCompressedOops) {
193       st->print(" (" INT32_FORMAT_X_0 ")", obj->int_field(offset()));
194     } else {
195       st->print(" (" INT64_FORMAT_X_0 ")", (int64_t)obj->long_field(offset()));
196     }
197 #else
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