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annotate src/share/vm/code/debugInfo.hpp @ 6182:765ee2d1674b
7157365: jruby/bench.bench_timeout crashes with JVM internal error
Reviewed-by: jrose, kvn
author | twisti |
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date | Mon, 18 Jun 2012 15:17:30 -0700 |
parents | f95d63e2154a |
children | da91efe96a93 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, 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 #ifndef SHARE_VM_CODE_DEBUGINFO_HPP |
26 #define SHARE_VM_CODE_DEBUGINFO_HPP | |
27 | |
28 #include "code/compressedStream.hpp" | |
29 #include "code/location.hpp" | |
30 #include "code/nmethod.hpp" | |
31 #include "code/oopRecorder.hpp" | |
32 #include "runtime/stackValue.hpp" | |
33 #include "utilities/growableArray.hpp" | |
34 | |
0 | 35 // Classes used for serializing debugging information. |
36 // These abstractions are introducted to provide symmetric | |
37 // read and write operations. | |
38 | |
39 // ScopeValue describes the value of a variable/expression in a scope | |
40 // - LocationValue describes a value in a given location (in frame or register) | |
41 // - ConstantValue describes a constant | |
42 | |
43 class ScopeValue: public ResourceObj { | |
44 public: | |
45 // Testers | |
46 virtual bool is_location() const { return false; } | |
47 virtual bool is_object() const { return false; } | |
48 virtual bool is_constant_int() const { return false; } | |
49 virtual bool is_constant_double() const { return false; } | |
50 virtual bool is_constant_long() const { return false; } | |
51 virtual bool is_constant_oop() const { return false; } | |
52 virtual bool equals(ScopeValue* other) const { return false; } | |
53 | |
54 // Serialization of debugging information | |
55 virtual void write_on(DebugInfoWriteStream* stream) = 0; | |
56 static ScopeValue* read_from(DebugInfoReadStream* stream); | |
57 }; | |
58 | |
59 | |
60 // A Location value describes a value in a given location; i.e. the corresponding | |
61 // logical entity (e.g., a method temporary) lives in this location. | |
62 | |
63 class LocationValue: public ScopeValue { | |
64 private: | |
65 Location _location; | |
66 public: | |
67 LocationValue(Location location) { _location = location; } | |
68 bool is_location() const { return true; } | |
69 Location location() const { return _location; } | |
70 | |
71 // Serialization of debugging information | |
72 LocationValue(DebugInfoReadStream* stream); | |
73 void write_on(DebugInfoWriteStream* stream); | |
74 | |
75 // Printing | |
76 void print_on(outputStream* st) const; | |
77 }; | |
78 | |
79 | |
80 // An ObjectValue describes an object eliminated by escape analysis. | |
81 | |
82 class ObjectValue: public ScopeValue { | |
83 private: | |
84 int _id; | |
85 ScopeValue* _klass; | |
86 GrowableArray<ScopeValue*> _field_values; | |
87 Handle _value; | |
88 bool _visited; | |
89 | |
90 public: | |
91 ObjectValue(int id, ScopeValue* klass) | |
92 : _id(id) | |
93 , _klass(klass) | |
94 , _field_values() | |
95 , _value() | |
96 , _visited(false) { | |
97 assert(klass->is_constant_oop(), "should be constant klass oop"); | |
98 } | |
99 | |
100 ObjectValue(int id) | |
101 : _id(id) | |
102 , _klass(NULL) | |
103 , _field_values() | |
104 , _value() | |
105 , _visited(false) {} | |
106 | |
107 // Accessors | |
108 bool is_object() const { return true; } | |
109 int id() const { return _id; } | |
110 ScopeValue* klass() const { return _klass; } | |
111 GrowableArray<ScopeValue*>* field_values() { return &_field_values; } | |
112 ScopeValue* field_at(int i) const { return _field_values.at(i); } | |
113 int field_size() { return _field_values.length(); } | |
114 Handle value() const { return _value; } | |
115 bool is_visited() const { return _visited; } | |
116 | |
117 void set_value(oop value) { _value = Handle(value); } | |
118 void set_visited(bool visited) { _visited = false; } | |
119 | |
120 // Serialization of debugging information | |
121 void read_object(DebugInfoReadStream* stream); | |
122 void write_on(DebugInfoWriteStream* stream); | |
123 | |
124 // Printing | |
125 void print_on(outputStream* st) const; | |
126 void print_fields_on(outputStream* st) const; | |
127 }; | |
128 | |
129 | |
130 // A ConstantIntValue describes a constant int; i.e., the corresponding logical entity | |
131 // is either a source constant or its computation has been constant-folded. | |
132 | |
133 class ConstantIntValue: public ScopeValue { | |
134 private: | |
135 jint _value; | |
136 public: | |
137 ConstantIntValue(jint value) { _value = value; } | |
138 jint value() const { return _value; } | |
139 bool is_constant_int() const { return true; } | |
140 bool equals(ScopeValue* other) const { return false; } | |
141 | |
142 // Serialization of debugging information | |
143 ConstantIntValue(DebugInfoReadStream* stream); | |
144 void write_on(DebugInfoWriteStream* stream); | |
145 | |
146 // Printing | |
147 void print_on(outputStream* st) const; | |
148 }; | |
149 | |
150 class ConstantLongValue: public ScopeValue { | |
151 private: | |
152 jlong _value; | |
153 public: | |
154 ConstantLongValue(jlong value) { _value = value; } | |
155 jlong value() const { return _value; } | |
156 bool is_constant_long() const { return true; } | |
157 bool equals(ScopeValue* other) const { return false; } | |
158 | |
159 // Serialization of debugging information | |
160 ConstantLongValue(DebugInfoReadStream* stream); | |
161 void write_on(DebugInfoWriteStream* stream); | |
162 | |
163 // Printing | |
164 void print_on(outputStream* st) const; | |
165 }; | |
166 | |
167 class ConstantDoubleValue: public ScopeValue { | |
168 private: | |
169 jdouble _value; | |
170 public: | |
171 ConstantDoubleValue(jdouble value) { _value = value; } | |
172 jdouble value() const { return _value; } | |
173 bool is_constant_double() const { return true; } | |
174 bool equals(ScopeValue* other) const { return false; } | |
175 | |
176 // Serialization of debugging information | |
177 ConstantDoubleValue(DebugInfoReadStream* stream); | |
178 void write_on(DebugInfoWriteStream* stream); | |
179 | |
180 // Printing | |
181 void print_on(outputStream* st) const; | |
182 }; | |
183 | |
184 // A ConstantOopWriteValue is created by the compiler to | |
185 // be written as debugging information. | |
186 | |
187 class ConstantOopWriteValue: public ScopeValue { | |
188 private: | |
189 jobject _value; | |
190 public: | |
191 ConstantOopWriteValue(jobject value) { _value = value; } | |
192 jobject value() const { return _value; } | |
193 bool is_constant_oop() const { return true; } | |
194 bool equals(ScopeValue* other) const { return false; } | |
195 | |
196 // Serialization of debugging information | |
197 void write_on(DebugInfoWriteStream* stream); | |
198 | |
199 // Printing | |
200 void print_on(outputStream* st) const; | |
201 }; | |
202 | |
203 // A ConstantOopReadValue is created by the VM when reading | |
204 // debug information | |
205 | |
206 class ConstantOopReadValue: public ScopeValue { | |
207 private: | |
208 Handle _value; | |
209 public: | |
210 Handle value() const { return _value; } | |
211 bool is_constant_oop() const { return true; } | |
212 bool equals(ScopeValue* other) const { return false; } | |
213 | |
214 // Serialization of debugging information | |
215 ConstantOopReadValue(DebugInfoReadStream* stream); | |
216 void write_on(DebugInfoWriteStream* stream); | |
217 | |
218 // Printing | |
219 void print_on(outputStream* st) const; | |
220 }; | |
221 | |
222 // MonitorValue describes the pair used for monitor_enter and monitor_exit. | |
223 | |
224 class MonitorValue: public ResourceObj { | |
225 private: | |
226 ScopeValue* _owner; | |
227 Location _basic_lock; | |
228 bool _eliminated; | |
229 public: | |
230 // Constructor | |
231 MonitorValue(ScopeValue* owner, Location basic_lock, bool eliminated = false); | |
232 | |
233 // Accessors | |
234 ScopeValue* owner() const { return _owner; } | |
235 Location basic_lock() const { return _basic_lock; } | |
236 bool eliminated() const { return _eliminated; } | |
237 | |
238 // Serialization of debugging information | |
239 MonitorValue(DebugInfoReadStream* stream); | |
240 void write_on(DebugInfoWriteStream* stream); | |
241 | |
242 // Printing | |
243 void print_on(outputStream* st) const; | |
244 }; | |
245 | |
246 // DebugInfoReadStream specializes CompressedReadStream for reading | |
247 // debugging information. Used by ScopeDesc. | |
248 | |
249 class DebugInfoReadStream : public CompressedReadStream { | |
250 private: | |
251 const nmethod* _code; | |
252 const nmethod* code() const { return _code; } | |
253 GrowableArray<ScopeValue*>* _obj_pool; | |
254 public: | |
255 DebugInfoReadStream(const nmethod* code, int offset, GrowableArray<ScopeValue*>* obj_pool = NULL) : | |
256 CompressedReadStream(code->scopes_data_begin(), offset) { | |
257 _code = code; | |
258 _obj_pool = obj_pool; | |
259 | |
260 } ; | |
261 | |
262 oop read_oop() { | |
263 return code()->oop_at(read_int()); | |
264 } | |
265 ScopeValue* read_object_value(); | |
266 ScopeValue* get_cached_object(); | |
267 // BCI encoding is mostly unsigned, but -1 is a distinguished value | |
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268 int read_bci() { return read_int() + InvocationEntryBci; } |
0 | 269 }; |
270 | |
271 // DebugInfoWriteStream specializes CompressedWriteStream for | |
272 // writing debugging information. Used by ScopeDescRecorder. | |
273 | |
274 class DebugInfoWriteStream : public CompressedWriteStream { | |
275 private: | |
276 DebugInformationRecorder* _recorder; | |
277 DebugInformationRecorder* recorder() const { return _recorder; } | |
278 public: | |
279 DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size); | |
280 void write_handle(jobject h); | |
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281 void write_bci(int bci) { write_int(bci - InvocationEntryBci); } |
0 | 282 }; |
1972 | 283 |
284 #endif // SHARE_VM_CODE_DEBUGINFO_HPP |