Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/fieldDescriptor.cpp @ 7168:73e64867adb7
8003690: Example code in JVMTI GetStackTrace documentation is broken
Summary: Fixed to minor errors in example code
Reviewed-by: sspitsyn, dholmes
author | mikael |
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date | Wed, 21 Nov 2012 09:02:13 -0800 |
parents | 18fb7da42534 |
children | 35431a769282 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "memory/resourceArea.hpp" | |
29 #include "memory/universe.inline.hpp" | |
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30 #include "oops/annotations.hpp" |
1972 | 31 #include "oops/instanceKlass.hpp" |
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32 #include "oops/fieldStreams.hpp" |
1972 | 33 #include "runtime/fieldDescriptor.hpp" |
34 #include "runtime/handles.inline.hpp" | |
35 #include "runtime/signature.hpp" | |
0 | 36 |
37 | |
38 oop fieldDescriptor::loader() const { | |
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39 return _cp->pool_holder()->class_loader(); |
0 | 40 } |
41 | |
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42 Symbol* fieldDescriptor::generic_signature() const { |
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43 if (!has_generic_signature()) { |
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44 return NULL; |
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45 } |
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46 |
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47 int idx = 0; |
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48 InstanceKlass* ik = field_holder(); |
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49 for (AllFieldStream fs(ik); !fs.done(); fs.next()) { |
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50 if (idx == _index) { |
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51 return fs.generic_signature(); |
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52 } else { |
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53 idx ++; |
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54 } |
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55 } |
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56 assert(false, "should never happen"); |
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57 return NULL; |
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58 } |
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59 |
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60 AnnotationArray* fieldDescriptor::annotations() const { |
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61 InstanceKlass* ik = field_holder(); |
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62 Array<AnnotationArray*>* md = ik->fields_annotations(); |
0 | 63 if (md == NULL) |
64 return NULL; | |
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65 return md->at(index()); |
0 | 66 } |
67 | |
68 constantTag fieldDescriptor::initial_value_tag() const { | |
3938 | 69 return constants()->tag_at(initial_value_index()); |
0 | 70 } |
71 | |
72 jint fieldDescriptor::int_initial_value() const { | |
3938 | 73 return constants()->int_at(initial_value_index()); |
0 | 74 } |
75 | |
76 jlong fieldDescriptor::long_initial_value() const { | |
3938 | 77 return constants()->long_at(initial_value_index()); |
0 | 78 } |
79 | |
80 jfloat fieldDescriptor::float_initial_value() const { | |
3938 | 81 return constants()->float_at(initial_value_index()); |
0 | 82 } |
83 | |
84 jdouble fieldDescriptor::double_initial_value() const { | |
3938 | 85 return constants()->double_at(initial_value_index()); |
0 | 86 } |
87 | |
88 oop fieldDescriptor::string_initial_value(TRAPS) const { | |
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89 return constants()->uncached_string_at(initial_value_index(), CHECK_0); |
0 | 90 } |
91 | |
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92 void fieldDescriptor::initialize(InstanceKlass* ik, int index) { |
0 | 93 _cp = ik->constants(); |
3938 | 94 FieldInfo* f = ik->field(index); |
95 assert(!f->is_internal(), "regular Java fields only"); | |
0 | 96 |
3938 | 97 _access_flags = accessFlags_from(f->access_flags()); |
98 guarantee(f->name_index() != 0 && f->signature_index() != 0, "bad constant pool index for fieldDescriptor"); | |
0 | 99 _index = index; |
100 } | |
101 | |
102 #ifndef PRODUCT | |
103 | |
104 void fieldDescriptor::print_on(outputStream* st) const { | |
3938 | 105 access_flags().print_on(st); |
106 name()->print_value_on(st); | |
0 | 107 st->print(" "); |
3938 | 108 signature()->print_value_on(st); |
0 | 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_on_for(outputStream* st, oop obj) { | |
126 print_on(st); | |
127 BasicType ft = field_type(); | |
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128 jint as_int = 0; |
0 | 129 switch (ft) { |
130 case T_BYTE: | |
131 as_int = (jint)obj->byte_field(offset()); | |
132 st->print(" %d", obj->byte_field(offset())); | |
133 break; | |
134 case T_CHAR: | |
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135 as_int = (jint)obj->char_field(offset()); |
0 | 136 { |
137 jchar c = obj->char_field(offset()); | |
138 as_int = c; | |
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 as_int = obj->int_field(offset()); | |
147 st->print(" %f", obj->float_field(offset())); | |
148 break; | |
149 case T_INT: | |
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150 as_int = obj->int_field(offset()); |
0 | 151 st->print(" %d", obj->int_field(offset())); |
152 break; | |
153 case T_LONG: | |
154 st->print(" "); | |
155 st->print_jlong(obj->long_field(offset())); | |
156 break; | |
157 case T_SHORT: | |
158 as_int = obj->short_field(offset()); | |
159 st->print(" %d", obj->short_field(offset())); | |
160 break; | |
161 case T_BOOLEAN: | |
162 as_int = obj->bool_field(offset()); | |
163 st->print(" %s", obj->bool_field(offset()) ? "true" : "false"); | |
164 break; | |
165 case T_ARRAY: | |
166 st->print(" "); | |
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167 NOT_LP64(as_int = obj->int_field(offset())); |
0 | 168 obj->obj_field(offset())->print_value_on(st); |
169 break; | |
170 case T_OBJECT: | |
171 st->print(" "); | |
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172 NOT_LP64(as_int = obj->int_field(offset())); |
0 | 173 obj->obj_field(offset())->print_value_on(st); |
174 break; | |
175 default: | |
176 ShouldNotReachHere(); | |
177 break; | |
178 } | |
179 // Print a hint as to the underlying integer representation. This can be wrong for | |
180 // pointers on an LP64 machine | |
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181 if (ft == T_LONG || ft == T_DOUBLE LP64_ONLY(|| !is_java_primitive(ft)) ) { |
0 | 182 st->print(" (%x %x)", obj->int_field(offset()), obj->int_field(offset()+sizeof(jint))); |
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183 } else if (as_int < 0 || as_int > 9) { |
0 | 184 st->print(" (%x)", as_int); |
185 } | |
186 } | |
187 | |
188 #endif /* PRODUCT */ |