Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/runtime/fieldDescriptor.cpp
src/share/vm/runtime/fieldDescriptor.cpp
- changeset 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
equal
deleted
inserted
replaced
| -1:000000000000 | 0:f90c822e73f8 |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. | |
| 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 * | |
| 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/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "memory/resourceArea.hpp" | |
| 29 #include "memory/universe.inline.hpp" | |
| 30 #include "oops/annotations.hpp" | |
| 31 #include "oops/instanceKlass.hpp" | |
| 32 #include "oops/fieldStreams.hpp" | |
| 33 #include "runtime/fieldDescriptor.hpp" | |
| 34 #include "runtime/handles.inline.hpp" | |
| 35 #include "runtime/signature.hpp" | |
| 36 | |
| 37 | |
| 38 oop fieldDescriptor::loader() const { | |
| 39 return _cp->pool_holder()->class_loader(); | |
| 40 } | |
| 41 | |
| 42 Symbol* fieldDescriptor::generic_signature() const { | |
| 43 if (!has_generic_signature()) { | |
| 44 return NULL; | |
| 45 } | |
| 46 | |
| 47 int idx = 0; | |
| 48 InstanceKlass* ik = field_holder(); | |
| 49 for (AllFieldStream fs(ik); !fs.done(); fs.next()) { | |
| 50 if (idx == _index) { | |
| 51 return fs.generic_signature(); | |
| 52 } else { | |
| 53 idx ++; | |
| 54 } | |
| 55 } | |
| 56 assert(false, "should never happen"); | |
| 57 return NULL; | |
| 58 } | |
| 59 | |
| 60 AnnotationArray* fieldDescriptor::annotations() const { | |
| 61 InstanceKlass* ik = field_holder(); | |
| 62 Array<AnnotationArray*>* md = ik->fields_annotations(); | |
| 63 if (md == NULL) | |
| 64 return NULL; | |
| 65 return md->at(index()); | |
| 66 } | |
| 67 | |
| 68 AnnotationArray* fieldDescriptor::type_annotations() const { | |
| 69 InstanceKlass* ik = field_holder(); | |
| 70 Array<AnnotationArray*>* type_annos = ik->fields_type_annotations(); | |
| 71 if (type_annos == NULL) | |
| 72 return NULL; | |
| 73 return type_annos->at(index()); | |
| 74 } | |
| 75 | |
| 76 constantTag fieldDescriptor::initial_value_tag() const { | |
| 77 return constants()->tag_at(initial_value_index()); | |
| 78 } | |
| 79 | |
| 80 jint fieldDescriptor::int_initial_value() const { | |
| 81 return constants()->int_at(initial_value_index()); | |
| 82 } | |
| 83 | |
| 84 jlong fieldDescriptor::long_initial_value() const { | |
| 85 return constants()->long_at(initial_value_index()); | |
| 86 } | |
| 87 | |
| 88 jfloat fieldDescriptor::float_initial_value() const { | |
| 89 return constants()->float_at(initial_value_index()); | |
| 90 } | |
| 91 | |
| 92 jdouble fieldDescriptor::double_initial_value() const { | |
| 93 return constants()->double_at(initial_value_index()); | |
| 94 } | |
| 95 | |
| 96 oop fieldDescriptor::string_initial_value(TRAPS) const { | |
| 97 return constants()->uncached_string_at(initial_value_index(), CHECK_0); | |
| 98 } | |
| 99 | |
| 100 void fieldDescriptor::reinitialize(InstanceKlass* ik, int index) { | |
| 101 if (_cp.is_null() || field_holder() != ik) { | |
| 102 _cp = constantPoolHandle(Thread::current(), ik->constants()); | |
| 103 // _cp should now reference ik's constant pool; i.e., ik is now field_holder. | |
| 104 assert(field_holder() == ik, "must be already initialized to this class"); | |
| 105 } | |
| 106 FieldInfo* f = ik->field(index); | |
| 107 assert(!f->is_internal(), "regular Java fields only"); | |
| 108 | |
| 109 _access_flags = accessFlags_from(f->access_flags()); | |
| 110 guarantee(f->name_index() != 0 && f->signature_index() != 0, "bad constant pool index for fieldDescriptor"); | |
| 111 _index = index; | |
| 112 verify(); | |
| 113 } | |
| 114 | |
| 115 #ifndef PRODUCT | |
| 116 | |
| 117 void fieldDescriptor::verify() const { | |
| 118 if (_cp.is_null()) { | |
| 119 assert(_index == badInt, "constructor must be called"); // see constructor | |
| 120 } else { | |
| 121 assert(_index >= 0, "good index"); | |
| 122 assert(_index < field_holder()->java_fields_count(), "oob"); | |
| 123 } | |
| 124 } | |
| 125 | |
| 126 void fieldDescriptor::print_on(outputStream* st) const { | |
| 127 access_flags().print_on(st); | |
| 128 name()->print_value_on(st); | |
| 129 st->print(" "); | |
| 130 signature()->print_value_on(st); | |
| 131 st->print(" @%d ", offset()); | |
| 132 if (WizardMode && has_initial_value()) { | |
| 133 st->print("(initval "); | |
| 134 constantTag t = initial_value_tag(); | |
| 135 if (t.is_int()) { | |
| 136 st->print("int %d)", int_initial_value()); | |
| 137 } else if (t.is_long()){ | |
| 138 st->print_jlong(long_initial_value()); | |
| 139 } else if (t.is_float()){ | |
| 140 st->print("float %f)", float_initial_value()); | |
| 141 } else if (t.is_double()){ | |
| 142 st->print("double %lf)", double_initial_value()); | |
| 143 } | |
| 144 } | |
| 145 } | |
| 146 | |
| 147 void fieldDescriptor::print_on_for(outputStream* st, oop obj) { | |
| 148 print_on(st); | |
| 149 BasicType ft = field_type(); | |
| 150 jint as_int = 0; | |
| 151 switch (ft) { | |
| 152 case T_BYTE: | |
| 153 as_int = (jint)obj->byte_field(offset()); | |
| 154 st->print(" %d", obj->byte_field(offset())); | |
| 155 break; | |
| 156 case T_CHAR: | |
| 157 as_int = (jint)obj->char_field(offset()); | |
| 158 { | |
| 159 jchar c = obj->char_field(offset()); | |
| 160 as_int = c; | |
| 161 st->print(" %c %d", isprint(c) ? c : ' ', c); | |
| 162 } | |
| 163 break; | |
| 164 case T_DOUBLE: | |
| 165 st->print(" %lf", obj->double_field(offset())); | |
| 166 break; | |
| 167 case T_FLOAT: | |
| 168 as_int = obj->int_field(offset()); | |
| 169 st->print(" %f", obj->float_field(offset())); | |
| 170 break; | |
| 171 case T_INT: | |
| 172 as_int = obj->int_field(offset()); | |
| 173 st->print(" %d", obj->int_field(offset())); | |
| 174 break; | |
| 175 case T_LONG: | |
| 176 st->print(" "); | |
| 177 st->print_jlong(obj->long_field(offset())); | |
| 178 break; | |
| 179 case T_SHORT: | |
| 180 as_int = obj->short_field(offset()); | |
| 181 st->print(" %d", obj->short_field(offset())); | |
| 182 break; | |
| 183 case T_BOOLEAN: | |
| 184 as_int = obj->bool_field(offset()); | |
| 185 st->print(" %s", obj->bool_field(offset()) ? "true" : "false"); | |
| 186 break; | |
| 187 case T_ARRAY: | |
| 188 st->print(" "); | |
| 189 NOT_LP64(as_int = obj->int_field(offset())); | |
| 190 obj->obj_field(offset())->print_value_on(st); | |
| 191 break; | |
| 192 case T_OBJECT: | |
| 193 st->print(" "); | |
| 194 NOT_LP64(as_int = obj->int_field(offset())); | |
| 195 obj->obj_field(offset())->print_value_on(st); | |
| 196 break; | |
| 197 default: | |
| 198 ShouldNotReachHere(); | |
| 199 break; | |
| 200 } | |
| 201 // Print a hint as to the underlying integer representation. This can be wrong for | |
| 202 // pointers on an LP64 machine | |
| 203 if (ft == T_LONG || ft == T_DOUBLE LP64_ONLY(|| !is_java_primitive(ft)) ) { | |
| 204 st->print(" (%x %x)", obj->int_field(offset()), obj->int_field(offset()+sizeof(jint))); | |
| 205 } else if (as_int < 0 || as_int > 9) { | |
| 206 st->print(" (%x)", as_int); | |
| 207 } | |
| 208 } | |
| 209 | |
| 210 #endif /* PRODUCT */ |
