Thu, 07 Feb 2013 16:05:48 -0500
Merge
1 /*
2 * Copyright (c) 1997, 2012, 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 */
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"
38 oop fieldDescriptor::loader() const {
39 return _cp->pool_holder()->class_loader();
40 }
42 Symbol* fieldDescriptor::generic_signature() const {
43 if (!has_generic_signature()) {
44 return NULL;
45 }
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 }
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 }
68 AnnotationArray* fieldDescriptor::type_annotations() const {
69 InstanceKlass* ik = field_holder();
70 Annotations* type_annos = ik->type_annotations();
71 if (type_annos == NULL)
72 return NULL;
73 Array<AnnotationArray*>* md = type_annos->fields_annotations();
74 if (md == NULL)
75 return NULL;
76 return md->at(index());
77 }
79 constantTag fieldDescriptor::initial_value_tag() const {
80 return constants()->tag_at(initial_value_index());
81 }
83 jint fieldDescriptor::int_initial_value() const {
84 return constants()->int_at(initial_value_index());
85 }
87 jlong fieldDescriptor::long_initial_value() const {
88 return constants()->long_at(initial_value_index());
89 }
91 jfloat fieldDescriptor::float_initial_value() const {
92 return constants()->float_at(initial_value_index());
93 }
95 jdouble fieldDescriptor::double_initial_value() const {
96 return constants()->double_at(initial_value_index());
97 }
99 oop fieldDescriptor::string_initial_value(TRAPS) const {
100 return constants()->uncached_string_at(initial_value_index(), CHECK_0);
101 }
103 void fieldDescriptor::initialize(InstanceKlass* ik, int index) {
104 _cp = ik->constants();
105 FieldInfo* f = ik->field(index);
106 assert(!f->is_internal(), "regular Java fields only");
108 _access_flags = accessFlags_from(f->access_flags());
109 guarantee(f->name_index() != 0 && f->signature_index() != 0, "bad constant pool index for fieldDescriptor");
110 _index = index;
111 }
113 #ifndef PRODUCT
115 void fieldDescriptor::print_on(outputStream* st) const {
116 access_flags().print_on(st);
117 name()->print_value_on(st);
118 st->print(" ");
119 signature()->print_value_on(st);
120 st->print(" @%d ", offset());
121 if (WizardMode && has_initial_value()) {
122 st->print("(initval ");
123 constantTag t = initial_value_tag();
124 if (t.is_int()) {
125 st->print("int %d)", int_initial_value());
126 } else if (t.is_long()){
127 st->print_jlong(long_initial_value());
128 } else if (t.is_float()){
129 st->print("float %f)", float_initial_value());
130 } else if (t.is_double()){
131 st->print("double %lf)", double_initial_value());
132 }
133 }
134 }
136 void fieldDescriptor::print_on_for(outputStream* st, oop obj) {
137 print_on(st);
138 BasicType ft = field_type();
139 jint as_int = 0;
140 switch (ft) {
141 case T_BYTE:
142 as_int = (jint)obj->byte_field(offset());
143 st->print(" %d", obj->byte_field(offset()));
144 break;
145 case T_CHAR:
146 as_int = (jint)obj->char_field(offset());
147 {
148 jchar c = obj->char_field(offset());
149 as_int = c;
150 st->print(" %c %d", isprint(c) ? c : ' ', c);
151 }
152 break;
153 case T_DOUBLE:
154 st->print(" %lf", obj->double_field(offset()));
155 break;
156 case T_FLOAT:
157 as_int = obj->int_field(offset());
158 st->print(" %f", obj->float_field(offset()));
159 break;
160 case T_INT:
161 as_int = obj->int_field(offset());
162 st->print(" %d", obj->int_field(offset()));
163 break;
164 case T_LONG:
165 st->print(" ");
166 st->print_jlong(obj->long_field(offset()));
167 break;
168 case T_SHORT:
169 as_int = obj->short_field(offset());
170 st->print(" %d", obj->short_field(offset()));
171 break;
172 case T_BOOLEAN:
173 as_int = obj->bool_field(offset());
174 st->print(" %s", obj->bool_field(offset()) ? "true" : "false");
175 break;
176 case T_ARRAY:
177 st->print(" ");
178 NOT_LP64(as_int = obj->int_field(offset()));
179 obj->obj_field(offset())->print_value_on(st);
180 break;
181 case T_OBJECT:
182 st->print(" ");
183 NOT_LP64(as_int = obj->int_field(offset()));
184 obj->obj_field(offset())->print_value_on(st);
185 break;
186 default:
187 ShouldNotReachHere();
188 break;
189 }
190 // Print a hint as to the underlying integer representation. This can be wrong for
191 // pointers on an LP64 machine
192 if (ft == T_LONG || ft == T_DOUBLE LP64_ONLY(|| !is_java_primitive(ft)) ) {
193 st->print(" (%x %x)", obj->int_field(offset()), obj->int_field(offset()+sizeof(jint)));
194 } else if (as_int < 0 || as_int > 9) {
195 st->print(" (%x)", as_int);
196 }
197 }
199 #endif /* PRODUCT */