Mercurial > hg > graal-compiler
annotate src/share/vm/code/debugInfo.hpp @ 8151:b8f261ba79c6
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| author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
|---|---|
| date | Thu, 07 Mar 2013 21:00:29 +0100 |
| parents | b6a8f2d23057 |
| children | c5ff08c22458 |
| 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 #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 | |
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43 class ConstantOopReadValue; |
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44 |
| 0 | 45 class ScopeValue: public ResourceObj { |
| 46 public: | |
| 47 // Testers | |
| 48 virtual bool is_location() const { return false; } | |
| 49 virtual bool is_object() const { return false; } | |
| 50 virtual bool is_constant_int() const { return false; } | |
| 51 virtual bool is_constant_double() const { return false; } | |
| 52 virtual bool is_constant_long() const { return false; } | |
| 53 virtual bool is_constant_oop() const { return false; } | |
| 54 virtual bool equals(ScopeValue* other) const { return false; } | |
| 55 | |
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56 ConstantOopReadValue* as_ConstantOopReadValue() { |
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57 assert(is_constant_oop(), "must be"); |
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58 return (ConstantOopReadValue*) this; |
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59 } |
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60 |
| 0 | 61 // Serialization of debugging information |
| 62 virtual void write_on(DebugInfoWriteStream* stream) = 0; | |
| 63 static ScopeValue* read_from(DebugInfoReadStream* stream); | |
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64 |
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65 #ifdef GRAAL |
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66 // Printing |
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67 virtual void print_on(outputStream* st) const = 0; |
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68 #endif // GRAAL |
| 0 | 69 }; |
| 70 | |
| 71 | |
| 72 // A Location value describes a value in a given location; i.e. the corresponding | |
| 73 // logical entity (e.g., a method temporary) lives in this location. | |
| 74 | |
| 75 class LocationValue: public ScopeValue { | |
| 76 private: | |
| 77 Location _location; | |
| 78 public: | |
| 79 LocationValue(Location location) { _location = location; } | |
| 80 bool is_location() const { return true; } | |
| 81 Location location() const { return _location; } | |
| 82 | |
| 83 // Serialization of debugging information | |
| 84 LocationValue(DebugInfoReadStream* stream); | |
| 85 void write_on(DebugInfoWriteStream* stream); | |
| 86 | |
| 87 // Printing | |
| 88 void print_on(outputStream* st) const; | |
| 89 }; | |
| 90 | |
| 91 | |
| 92 // An ObjectValue describes an object eliminated by escape analysis. | |
| 93 | |
| 94 class ObjectValue: public ScopeValue { | |
| 95 private: | |
| 96 int _id; | |
| 97 ScopeValue* _klass; | |
| 98 GrowableArray<ScopeValue*> _field_values; | |
| 99 Handle _value; | |
| 100 bool _visited; | |
| 101 | |
| 102 public: | |
| 103 ObjectValue(int id, ScopeValue* klass) | |
| 104 : _id(id) | |
| 105 , _klass(klass) | |
| 106 , _field_values() | |
| 107 , _value() | |
| 108 , _visited(false) { | |
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109 assert(klass->is_constant_oop(), "should be constant java mirror oop"); |
| 0 | 110 } |
| 111 | |
| 112 ObjectValue(int id) | |
| 113 : _id(id) | |
| 114 , _klass(NULL) | |
| 115 , _field_values() | |
| 116 , _value() | |
| 117 , _visited(false) {} | |
| 118 | |
| 119 // Accessors | |
| 120 bool is_object() const { return true; } | |
| 121 int id() const { return _id; } | |
| 122 ScopeValue* klass() const { return _klass; } | |
| 123 GrowableArray<ScopeValue*>* field_values() { return &_field_values; } | |
| 124 ScopeValue* field_at(int i) const { return _field_values.at(i); } | |
| 125 int field_size() { return _field_values.length(); } | |
| 126 Handle value() const { return _value; } | |
| 127 bool is_visited() const { return _visited; } | |
| 128 | |
| 129 void set_value(oop value) { _value = Handle(value); } | |
| 130 void set_visited(bool visited) { _visited = false; } | |
| 131 | |
| 132 // Serialization of debugging information | |
| 133 void read_object(DebugInfoReadStream* stream); | |
| 134 void write_on(DebugInfoWriteStream* stream); | |
| 135 | |
| 136 // Printing | |
| 137 void print_on(outputStream* st) const; | |
| 138 void print_fields_on(outputStream* st) const; | |
| 139 }; | |
| 140 | |
| 141 | |
| 142 // A ConstantIntValue describes a constant int; i.e., the corresponding logical entity | |
| 143 // is either a source constant or its computation has been constant-folded. | |
| 144 | |
| 145 class ConstantIntValue: public ScopeValue { | |
| 146 private: | |
| 147 jint _value; | |
| 148 public: | |
| 149 ConstantIntValue(jint value) { _value = value; } | |
| 150 jint value() const { return _value; } | |
| 151 bool is_constant_int() const { return true; } | |
| 152 bool equals(ScopeValue* other) const { return false; } | |
| 153 | |
| 154 // Serialization of debugging information | |
| 155 ConstantIntValue(DebugInfoReadStream* stream); | |
| 156 void write_on(DebugInfoWriteStream* stream); | |
| 157 | |
| 158 // Printing | |
| 159 void print_on(outputStream* st) const; | |
| 160 }; | |
| 161 | |
| 162 class ConstantLongValue: public ScopeValue { | |
| 163 private: | |
| 164 jlong _value; | |
| 165 public: | |
| 166 ConstantLongValue(jlong value) { _value = value; } | |
| 167 jlong value() const { return _value; } | |
| 168 bool is_constant_long() const { return true; } | |
| 169 bool equals(ScopeValue* other) const { return false; } | |
| 170 | |
| 171 // Serialization of debugging information | |
| 172 ConstantLongValue(DebugInfoReadStream* stream); | |
| 173 void write_on(DebugInfoWriteStream* stream); | |
| 174 | |
| 175 // Printing | |
| 176 void print_on(outputStream* st) const; | |
| 177 }; | |
| 178 | |
| 179 class ConstantDoubleValue: public ScopeValue { | |
| 180 private: | |
| 181 jdouble _value; | |
| 182 public: | |
| 183 ConstantDoubleValue(jdouble value) { _value = value; } | |
| 184 jdouble value() const { return _value; } | |
| 185 bool is_constant_double() const { return true; } | |
| 186 bool equals(ScopeValue* other) const { return false; } | |
| 187 | |
| 188 // Serialization of debugging information | |
| 189 ConstantDoubleValue(DebugInfoReadStream* stream); | |
| 190 void write_on(DebugInfoWriteStream* stream); | |
| 191 | |
| 192 // Printing | |
| 193 void print_on(outputStream* st) const; | |
| 194 }; | |
| 195 | |
| 196 // A ConstantOopWriteValue is created by the compiler to | |
| 197 // be written as debugging information. | |
| 198 | |
| 199 class ConstantOopWriteValue: public ScopeValue { | |
| 200 private: | |
| 201 jobject _value; | |
| 202 public: | |
| 203 ConstantOopWriteValue(jobject value) { _value = value; } | |
| 204 jobject value() const { return _value; } | |
| 205 bool is_constant_oop() const { return true; } | |
| 206 bool equals(ScopeValue* other) const { return false; } | |
| 207 | |
| 208 // Serialization of debugging information | |
| 209 void write_on(DebugInfoWriteStream* stream); | |
| 210 | |
| 211 // Printing | |
| 212 void print_on(outputStream* st) const; | |
| 213 }; | |
| 214 | |
| 215 // A ConstantOopReadValue is created by the VM when reading | |
| 216 // debug information | |
| 217 | |
| 218 class ConstantOopReadValue: public ScopeValue { | |
| 219 private: | |
| 220 Handle _value; | |
| 221 public: | |
| 222 Handle value() const { return _value; } | |
| 223 bool is_constant_oop() const { return true; } | |
| 224 bool equals(ScopeValue* other) const { return false; } | |
| 225 | |
| 226 // Serialization of debugging information | |
| 227 ConstantOopReadValue(DebugInfoReadStream* stream); | |
| 228 void write_on(DebugInfoWriteStream* stream); | |
| 229 | |
| 230 // Printing | |
| 231 void print_on(outputStream* st) const; | |
| 232 }; | |
| 233 | |
| 234 // MonitorValue describes the pair used for monitor_enter and monitor_exit. | |
| 235 | |
| 236 class MonitorValue: public ResourceObj { | |
| 237 private: | |
| 238 ScopeValue* _owner; | |
| 239 Location _basic_lock; | |
| 240 bool _eliminated; | |
| 241 public: | |
| 242 // Constructor | |
| 243 MonitorValue(ScopeValue* owner, Location basic_lock, bool eliminated = false); | |
| 244 | |
| 245 // Accessors | |
| 246 ScopeValue* owner() const { return _owner; } | |
| 247 Location basic_lock() const { return _basic_lock; } | |
| 248 bool eliminated() const { return _eliminated; } | |
| 249 | |
| 250 // Serialization of debugging information | |
| 251 MonitorValue(DebugInfoReadStream* stream); | |
| 252 void write_on(DebugInfoWriteStream* stream); | |
| 253 | |
| 254 // Printing | |
| 255 void print_on(outputStream* st) const; | |
| 256 }; | |
| 257 | |
| 258 // DebugInfoReadStream specializes CompressedReadStream for reading | |
| 259 // debugging information. Used by ScopeDesc. | |
| 260 | |
| 261 class DebugInfoReadStream : public CompressedReadStream { | |
| 262 private: | |
| 263 const nmethod* _code; | |
| 264 const nmethod* code() const { return _code; } | |
| 265 GrowableArray<ScopeValue*>* _obj_pool; | |
| 266 public: | |
| 267 DebugInfoReadStream(const nmethod* code, int offset, GrowableArray<ScopeValue*>* obj_pool = NULL) : | |
| 268 CompressedReadStream(code->scopes_data_begin(), offset) { | |
| 269 _code = code; | |
| 270 _obj_pool = obj_pool; | |
| 271 | |
| 272 } ; | |
| 273 | |
| 274 oop read_oop() { | |
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275 oop o = code()->oop_at(read_int()); |
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276 assert(o == NULL || o->is_oop(), "oop only"); |
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277 return o; |
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278 } |
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279 Method* read_method() { |
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280 Method* o = (Method*)(code()->metadata_at(read_int())); |
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281 assert(o == NULL || |
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282 o->is_metadata(), "meta data only"); |
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283 return o; |
| 0 | 284 } |
| 285 ScopeValue* read_object_value(); | |
| 286 ScopeValue* get_cached_object(); | |
| 287 // BCI encoding is mostly unsigned, but -1 is a distinguished value | |
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288 int read_bci() { return read_int() + InvocationEntryBci; } |
| 0 | 289 }; |
| 290 | |
| 291 // DebugInfoWriteStream specializes CompressedWriteStream for | |
| 292 // writing debugging information. Used by ScopeDescRecorder. | |
| 293 | |
| 294 class DebugInfoWriteStream : public CompressedWriteStream { | |
| 295 private: | |
| 296 DebugInformationRecorder* _recorder; | |
| 297 DebugInformationRecorder* recorder() const { return _recorder; } | |
| 298 public: | |
| 299 DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size); | |
| 300 void write_handle(jobject h); | |
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301 void write_bci(int bci) { write_int(bci - InvocationEntryBci); } |
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302 |
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303 void write_metadata(Metadata* m); |
| 0 | 304 }; |
| 1972 | 305 |
| 306 #endif // SHARE_VM_CODE_DEBUGINFO_HPP |