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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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93 | 93 |
94 virtual bool TakeFunction(JSFunction* function) = 0; | 94 virtual bool TakeFunction(JSFunction* function) = 0; |
95 }; | 95 }; |
96 | 96 |
97 | 97 |
98 class Deoptimizer; | 98 class Deoptimizer; |
99 | 99 |
100 | 100 |
101 class DeoptimizerData { | 101 class DeoptimizerData { |
102 public: | 102 public: |
103 DeoptimizerData(); | 103 explicit DeoptimizerData(MemoryAllocator* allocator); |
104 ~DeoptimizerData(); | 104 ~DeoptimizerData(); |
105 | 105 |
106 #ifdef ENABLE_DEBUGGER_SUPPORT | 106 #ifdef ENABLE_DEBUGGER_SUPPORT |
107 void Iterate(ObjectVisitor* v); | 107 void Iterate(ObjectVisitor* v); |
108 #endif | 108 #endif |
109 | 109 |
110 Code* FindDeoptimizingCode(Address addr); | 110 Code* FindDeoptimizingCode(Address addr); |
111 void RemoveDeoptimizingCode(Code* code); | 111 void RemoveDeoptimizingCode(Code* code); |
112 | 112 |
113 private: | 113 private: |
| 114 MemoryAllocator* allocator_; |
114 int eager_deoptimization_entry_code_entries_; | 115 int eager_deoptimization_entry_code_entries_; |
115 int lazy_deoptimization_entry_code_entries_; | 116 int lazy_deoptimization_entry_code_entries_; |
116 MemoryChunk* eager_deoptimization_entry_code_; | 117 MemoryChunk* eager_deoptimization_entry_code_; |
117 MemoryChunk* lazy_deoptimization_entry_code_; | 118 MemoryChunk* lazy_deoptimization_entry_code_; |
118 Deoptimizer* current_; | 119 Deoptimizer* current_; |
119 | 120 |
120 #ifdef ENABLE_DEBUGGER_SUPPORT | 121 #ifdef ENABLE_DEBUGGER_SUPPORT |
121 DeoptimizedFrameInfo* deoptimized_frame_info_; | 122 DeoptimizedFrameInfo* deoptimized_frame_info_; |
122 #endif | 123 #endif |
123 | 124 |
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183 // Deoptimize the function now. Its current optimized code will never be run | 184 // Deoptimize the function now. Its current optimized code will never be run |
184 // again and any activations of the optimized code will get deoptimized when | 185 // again and any activations of the optimized code will get deoptimized when |
185 // execution returns. | 186 // execution returns. |
186 static void DeoptimizeFunction(JSFunction* function); | 187 static void DeoptimizeFunction(JSFunction* function); |
187 | 188 |
188 // Iterate over all the functions which share the same code object | 189 // Iterate over all the functions which share the same code object |
189 // and make them use unoptimized version. | 190 // and make them use unoptimized version. |
190 static void ReplaceCodeForRelatedFunctions(JSFunction* function, Code* code); | 191 static void ReplaceCodeForRelatedFunctions(JSFunction* function, Code* code); |
191 | 192 |
192 // Deoptimize all functions in the heap. | 193 // Deoptimize all functions in the heap. |
193 static void DeoptimizeAll(); | 194 static void DeoptimizeAll(Isolate* isolate); |
194 | 195 |
195 static void DeoptimizeGlobalObject(JSObject* object); | 196 static void DeoptimizeGlobalObject(JSObject* object); |
196 | 197 |
197 static void DeoptimizeAllFunctionsWith(OptimizedFunctionFilter* filter); | 198 static void DeoptimizeAllFunctionsWith(Isolate* isolate, |
| 199 OptimizedFunctionFilter* filter); |
198 | 200 |
199 static void DeoptimizeAllFunctionsForContext( | 201 static void DeoptimizeAllFunctionsForContext( |
200 Context* context, OptimizedFunctionFilter* filter); | 202 Context* context, OptimizedFunctionFilter* filter); |
201 | 203 |
202 static void VisitAllOptimizedFunctionsForContext( | 204 static void VisitAllOptimizedFunctionsForContext( |
203 Context* context, OptimizedFunctionVisitor* visitor); | 205 Context* context, OptimizedFunctionVisitor* visitor); |
204 | 206 |
205 static void VisitAllOptimizedFunctions(OptimizedFunctionVisitor* visitor); | 207 static void VisitAllOptimizedFunctions(Isolate* isolate, |
| 208 OptimizedFunctionVisitor* visitor); |
206 | 209 |
207 // The size in bytes of the code required at a lazy deopt patch site. | 210 // The size in bytes of the code required at a lazy deopt patch site. |
208 static int patch_size(); | 211 static int patch_size(); |
209 | 212 |
210 // Patch all stack guard checks in the unoptimized code to | 213 // Patch all stack guard checks in the unoptimized code to |
211 // unconditionally call replacement_code. | 214 // unconditionally call replacement_code. |
212 static void PatchStackCheckCode(Code* unoptimized_code, | 215 static void PatchStackCheckCode(Code* unoptimized_code, |
213 Code* check_code, | 216 Code* check_code, |
214 Code* replacement_code); | 217 Code* replacement_code); |
215 | 218 |
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252 CALCULATE_ENTRY_ADDRESS, | 255 CALCULATE_ENTRY_ADDRESS, |
253 ENSURE_ENTRY_CODE | 256 ENSURE_ENTRY_CODE |
254 }; | 257 }; |
255 | 258 |
256 | 259 |
257 static Address GetDeoptimizationEntry( | 260 static Address GetDeoptimizationEntry( |
258 Isolate* isolate, | 261 Isolate* isolate, |
259 int id, | 262 int id, |
260 BailoutType type, | 263 BailoutType type, |
261 GetEntryMode mode = ENSURE_ENTRY_CODE); | 264 GetEntryMode mode = ENSURE_ENTRY_CODE); |
262 static int GetDeoptimizationId(Address addr, BailoutType type); | 265 static int GetDeoptimizationId(Isolate* isolate, |
| 266 Address addr, |
| 267 BailoutType type); |
263 static int GetOutputInfo(DeoptimizationOutputData* data, | 268 static int GetOutputInfo(DeoptimizationOutputData* data, |
264 BailoutId node_id, | 269 BailoutId node_id, |
265 SharedFunctionInfo* shared); | 270 SharedFunctionInfo* shared); |
266 | 271 |
267 // Code generation support. | 272 // Code generation support. |
268 static int input_offset() { return OFFSET_OF(Deoptimizer, input_); } | 273 static int input_offset() { return OFFSET_OF(Deoptimizer, input_); } |
269 static int output_count_offset() { | 274 static int output_count_offset() { |
270 return OFFSET_OF(Deoptimizer, output_count_); | 275 return OFFSET_OF(Deoptimizer, output_count_); |
271 } | 276 } |
272 static int output_offset() { return OFFSET_OF(Deoptimizer, output_); } | 277 static int output_offset() { return OFFSET_OF(Deoptimizer, output_); } |
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314 }; | 319 }; |
315 | 320 |
316 int ConvertJSFrameIndexToFrameIndex(int jsframe_index); | 321 int ConvertJSFrameIndexToFrameIndex(int jsframe_index); |
317 | 322 |
318 static size_t GetMaxDeoptTableSize(); | 323 static size_t GetMaxDeoptTableSize(); |
319 | 324 |
320 static void EnsureCodeForDeoptimizationEntry(Isolate* isolate, | 325 static void EnsureCodeForDeoptimizationEntry(Isolate* isolate, |
321 BailoutType type, | 326 BailoutType type, |
322 int max_entry_id); | 327 int max_entry_id); |
323 | 328 |
| 329 Isolate* isolate() const { return isolate_; } |
| 330 |
324 private: | 331 private: |
325 static const int kMinNumberOfEntries = 64; | 332 static const int kMinNumberOfEntries = 64; |
326 static const int kMaxNumberOfEntries = 16384; | 333 static const int kMaxNumberOfEntries = 16384; |
327 | 334 |
328 Deoptimizer(Isolate* isolate, | 335 Deoptimizer(Isolate* isolate, |
329 JSFunction* function, | 336 JSFunction* function, |
330 BailoutType type, | 337 BailoutType type, |
331 unsigned bailout_id, | 338 unsigned bailout_id, |
332 Address from, | 339 Address from, |
333 int fp_to_sp_delta, | 340 int fp_to_sp_delta, |
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597 }; | 604 }; |
598 | 605 |
599 | 606 |
600 class TranslationBuffer BASE_EMBEDDED { | 607 class TranslationBuffer BASE_EMBEDDED { |
601 public: | 608 public: |
602 explicit TranslationBuffer(Zone* zone) : contents_(256, zone) { } | 609 explicit TranslationBuffer(Zone* zone) : contents_(256, zone) { } |
603 | 610 |
604 int CurrentIndex() const { return contents_.length(); } | 611 int CurrentIndex() const { return contents_.length(); } |
605 void Add(int32_t value, Zone* zone); | 612 void Add(int32_t value, Zone* zone); |
606 | 613 |
607 Handle<ByteArray> CreateByteArray(); | 614 Handle<ByteArray> CreateByteArray(Factory* factory); |
608 | 615 |
609 private: | 616 private: |
610 ZoneList<uint8_t> contents_; | 617 ZoneList<uint8_t> contents_; |
611 }; | 618 }; |
612 | 619 |
613 | 620 |
614 class TranslationIterator BASE_EMBEDDED { | 621 class TranslationIterator BASE_EMBEDDED { |
615 public: | 622 public: |
616 TranslationIterator(ByteArray* buffer, int index) | 623 TranslationIterator(ByteArray* buffer, int index) |
617 : buffer_(buffer), index_(index) { | 624 : buffer_(buffer), index_(index) { |
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888 Object** expression_stack_; | 895 Object** expression_stack_; |
889 int source_position_; | 896 int source_position_; |
890 | 897 |
891 friend class Deoptimizer; | 898 friend class Deoptimizer; |
892 }; | 899 }; |
893 #endif | 900 #endif |
894 | 901 |
895 } } // namespace v8::internal | 902 } } // namespace v8::internal |
896 | 903 |
897 #endif // V8_DEOPTIMIZER_H_ | 904 #endif // V8_DEOPTIMIZER_H_ |
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