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annotate src/share/vm/code/debugInfo.hpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | 72088be4b386 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2009, 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 | |
| 25 // Classes used for serializing debugging information. | |
| 26 // These abstractions are introducted to provide symmetric | |
| 27 // read and write operations. | |
| 28 | |
| 29 // ScopeValue describes the value of a variable/expression in a scope | |
| 30 // - LocationValue describes a value in a given location (in frame or register) | |
| 31 // - ConstantValue describes a constant | |
| 32 | |
| 33 class ScopeValue: public ResourceObj { | |
| 34 public: | |
| 35 // Testers | |
| 36 virtual bool is_location() const { return false; } | |
| 37 virtual bool is_object() const { return false; } | |
| 38 virtual bool is_constant_int() const { return false; } | |
| 39 virtual bool is_constant_double() const { return false; } | |
| 40 virtual bool is_constant_long() const { return false; } | |
| 41 virtual bool is_constant_oop() const { return false; } | |
| 42 virtual bool equals(ScopeValue* other) const { return false; } | |
| 43 | |
| 44 // Serialization of debugging information | |
| 45 virtual void write_on(DebugInfoWriteStream* stream) = 0; | |
| 46 static ScopeValue* read_from(DebugInfoReadStream* stream); | |
| 47 }; | |
| 48 | |
| 49 | |
| 50 // A Location value describes a value in a given location; i.e. the corresponding | |
| 51 // logical entity (e.g., a method temporary) lives in this location. | |
| 52 | |
| 53 class LocationValue: public ScopeValue { | |
| 54 private: | |
| 55 Location _location; | |
| 56 public: | |
| 57 LocationValue(Location location) { _location = location; } | |
| 58 bool is_location() const { return true; } | |
| 59 Location location() const { return _location; } | |
| 60 | |
| 61 // Serialization of debugging information | |
| 62 LocationValue(DebugInfoReadStream* stream); | |
| 63 void write_on(DebugInfoWriteStream* stream); | |
| 64 | |
| 65 // Printing | |
| 66 void print_on(outputStream* st) const; | |
| 67 }; | |
| 68 | |
| 69 | |
| 70 // An ObjectValue describes an object eliminated by escape analysis. | |
| 71 | |
| 72 class ObjectValue: public ScopeValue { | |
| 73 private: | |
| 74 int _id; | |
| 75 ScopeValue* _klass; | |
| 76 GrowableArray<ScopeValue*> _field_values; | |
| 77 Handle _value; | |
| 78 bool _visited; | |
| 79 | |
| 80 public: | |
| 81 ObjectValue(int id, ScopeValue* klass) | |
| 82 : _id(id) | |
| 83 , _klass(klass) | |
| 84 , _field_values() | |
| 85 , _value() | |
| 86 , _visited(false) { | |
| 87 assert(klass->is_constant_oop(), "should be constant klass oop"); | |
| 88 } | |
| 89 | |
| 90 ObjectValue(int id) | |
| 91 : _id(id) | |
| 92 , _klass(NULL) | |
| 93 , _field_values() | |
| 94 , _value() | |
| 95 , _visited(false) {} | |
| 96 | |
| 97 // Accessors | |
| 98 bool is_object() const { return true; } | |
| 99 int id() const { return _id; } | |
| 100 ScopeValue* klass() const { return _klass; } | |
| 101 GrowableArray<ScopeValue*>* field_values() { return &_field_values; } | |
| 102 ScopeValue* field_at(int i) const { return _field_values.at(i); } | |
| 103 int field_size() { return _field_values.length(); } | |
| 104 Handle value() const { return _value; } | |
| 105 bool is_visited() const { return _visited; } | |
| 106 | |
| 107 void set_value(oop value) { _value = Handle(value); } | |
| 108 void set_visited(bool visited) { _visited = false; } | |
| 109 | |
| 110 // Serialization of debugging information | |
| 111 void read_object(DebugInfoReadStream* stream); | |
| 112 void write_on(DebugInfoWriteStream* stream); | |
| 113 | |
| 114 // Printing | |
| 115 void print_on(outputStream* st) const; | |
| 116 void print_fields_on(outputStream* st) const; | |
| 117 }; | |
| 118 | |
| 119 | |
| 120 // A ConstantIntValue describes a constant int; i.e., the corresponding logical entity | |
| 121 // is either a source constant or its computation has been constant-folded. | |
| 122 | |
| 123 class ConstantIntValue: public ScopeValue { | |
| 124 private: | |
| 125 jint _value; | |
| 126 public: | |
| 127 ConstantIntValue(jint value) { _value = value; } | |
| 128 jint value() const { return _value; } | |
| 129 bool is_constant_int() const { return true; } | |
| 130 bool equals(ScopeValue* other) const { return false; } | |
| 131 | |
| 132 // Serialization of debugging information | |
| 133 ConstantIntValue(DebugInfoReadStream* stream); | |
| 134 void write_on(DebugInfoWriteStream* stream); | |
| 135 | |
| 136 // Printing | |
| 137 void print_on(outputStream* st) const; | |
| 138 }; | |
| 139 | |
| 140 class ConstantLongValue: public ScopeValue { | |
| 141 private: | |
| 142 jlong _value; | |
| 143 public: | |
| 144 ConstantLongValue(jlong value) { _value = value; } | |
| 145 jlong value() const { return _value; } | |
| 146 bool is_constant_long() const { return true; } | |
| 147 bool equals(ScopeValue* other) const { return false; } | |
| 148 | |
| 149 // Serialization of debugging information | |
| 150 ConstantLongValue(DebugInfoReadStream* stream); | |
| 151 void write_on(DebugInfoWriteStream* stream); | |
| 152 | |
| 153 // Printing | |
| 154 void print_on(outputStream* st) const; | |
| 155 }; | |
| 156 | |
| 157 class ConstantDoubleValue: public ScopeValue { | |
| 158 private: | |
| 159 jdouble _value; | |
| 160 public: | |
| 161 ConstantDoubleValue(jdouble value) { _value = value; } | |
| 162 jdouble value() const { return _value; } | |
| 163 bool is_constant_double() const { return true; } | |
| 164 bool equals(ScopeValue* other) const { return false; } | |
| 165 | |
| 166 // Serialization of debugging information | |
| 167 ConstantDoubleValue(DebugInfoReadStream* stream); | |
| 168 void write_on(DebugInfoWriteStream* stream); | |
| 169 | |
| 170 // Printing | |
| 171 void print_on(outputStream* st) const; | |
| 172 }; | |
| 173 | |
| 174 // A ConstantOopWriteValue is created by the compiler to | |
| 175 // be written as debugging information. | |
| 176 | |
| 177 class ConstantOopWriteValue: public ScopeValue { | |
| 178 private: | |
| 179 jobject _value; | |
| 180 public: | |
| 181 ConstantOopWriteValue(jobject value) { _value = value; } | |
| 182 jobject value() const { return _value; } | |
| 183 bool is_constant_oop() const { return true; } | |
| 184 bool equals(ScopeValue* other) const { return false; } | |
| 185 | |
| 186 // Serialization of debugging information | |
| 187 void write_on(DebugInfoWriteStream* stream); | |
| 188 | |
| 189 // Printing | |
| 190 void print_on(outputStream* st) const; | |
| 191 }; | |
| 192 | |
| 193 // A ConstantOopReadValue is created by the VM when reading | |
| 194 // debug information | |
| 195 | |
| 196 class ConstantOopReadValue: public ScopeValue { | |
| 197 private: | |
| 198 Handle _value; | |
| 199 public: | |
| 200 Handle value() const { return _value; } | |
| 201 bool is_constant_oop() const { return true; } | |
| 202 bool equals(ScopeValue* other) const { return false; } | |
| 203 | |
| 204 // Serialization of debugging information | |
| 205 ConstantOopReadValue(DebugInfoReadStream* stream); | |
| 206 void write_on(DebugInfoWriteStream* stream); | |
| 207 | |
| 208 // Printing | |
| 209 void print_on(outputStream* st) const; | |
| 210 }; | |
| 211 | |
| 212 // MonitorValue describes the pair used for monitor_enter and monitor_exit. | |
| 213 | |
| 214 class MonitorValue: public ResourceObj { | |
| 215 private: | |
| 216 ScopeValue* _owner; | |
| 217 Location _basic_lock; | |
| 218 bool _eliminated; | |
| 219 public: | |
| 220 // Constructor | |
| 221 MonitorValue(ScopeValue* owner, Location basic_lock, bool eliminated = false); | |
| 222 | |
| 223 // Accessors | |
| 224 ScopeValue* owner() const { return _owner; } | |
| 225 Location basic_lock() const { return _basic_lock; } | |
| 226 bool eliminated() const { return _eliminated; } | |
| 227 | |
| 228 // Serialization of debugging information | |
| 229 MonitorValue(DebugInfoReadStream* stream); | |
| 230 void write_on(DebugInfoWriteStream* stream); | |
| 231 | |
| 232 // Printing | |
| 233 void print_on(outputStream* st) const; | |
| 234 }; | |
| 235 | |
| 236 // DebugInfoReadStream specializes CompressedReadStream for reading | |
| 237 // debugging information. Used by ScopeDesc. | |
| 238 | |
| 239 class DebugInfoReadStream : public CompressedReadStream { | |
| 240 private: | |
| 241 const nmethod* _code; | |
| 242 const nmethod* code() const { return _code; } | |
| 243 GrowableArray<ScopeValue*>* _obj_pool; | |
| 244 public: | |
| 245 DebugInfoReadStream(const nmethod* code, int offset, GrowableArray<ScopeValue*>* obj_pool = NULL) : | |
| 246 CompressedReadStream(code->scopes_data_begin(), offset) { | |
| 247 _code = code; | |
| 248 _obj_pool = obj_pool; | |
| 249 | |
| 250 } ; | |
| 251 | |
| 252 oop read_oop() { | |
| 253 return code()->oop_at(read_int()); | |
| 254 } | |
| 255 ScopeValue* read_object_value(); | |
| 256 ScopeValue* get_cached_object(); | |
| 257 // BCI encoding is mostly unsigned, but -1 is a distinguished value | |
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258 int read_bci() { return read_int() + InvocationEntryBci; } |
| 0 | 259 }; |
| 260 | |
| 261 // DebugInfoWriteStream specializes CompressedWriteStream for | |
| 262 // writing debugging information. Used by ScopeDescRecorder. | |
| 263 | |
| 264 class DebugInfoWriteStream : public CompressedWriteStream { | |
| 265 private: | |
| 266 DebugInformationRecorder* _recorder; | |
| 267 DebugInformationRecorder* recorder() const { return _recorder; } | |
| 268 public: | |
| 269 DebugInfoWriteStream(DebugInformationRecorder* recorder, int initial_size); | |
| 270 void write_handle(jobject h); | |
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271 void write_bci(int bci) { write_int(bci - InvocationEntryBci); } |
| 0 | 272 }; |