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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include "vm/symbols.h" | 5 #include "vm/symbols.h" |
| 6 | 6 |
| 7 #include "vm/handles.h" | 7 #include "vm/handles.h" |
| 8 #include "vm/handles_impl.h" | 8 #include "vm/handles_impl.h" |
| 9 #include "vm/isolate.h" | 9 #include "vm/isolate.h" |
| 10 #include "vm/object.h" | 10 #include "vm/object.h" |
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| 115 } | 115 } |
| 116 } | 116 } |
| 117 | 117 |
| 118 | 118 |
| 119 void Symbols::SetupSymbolTable(Isolate* isolate) { | 119 void Symbols::SetupSymbolTable(Isolate* isolate) { |
| 120 ASSERT(isolate != NULL); | 120 ASSERT(isolate != NULL); |
| 121 | 121 |
| 122 // Setup the symbol table used within the String class. | 122 // Setup the symbol table used within the String class. |
| 123 const intptr_t initial_size = (isolate == Dart::vm_isolate()) ? | 123 const intptr_t initial_size = (isolate == Dart::vm_isolate()) ? |
| 124 kInitialVMIsolateSymtabSize : kInitialSymtabSize; | 124 kInitialVMIsolateSymtabSize : kInitialSymtabSize; |
| 125 const Array& array = Array::Handle(Array::New(initial_size + 1)); | 125 const Array& array = Array::Handle(Array::New(initial_size + 1, Heap::kOld)); |
| 126 | 126 |
| 127 // Last element contains the count of used slots. | 127 // Last element contains the count of used slots. |
| 128 array.SetAt(initial_size, Smi::Handle(Smi::New(0))); | 128 array.SetAt(initial_size, Smi::Handle(Smi::New(0))); |
| 129 isolate->object_store()->set_symbol_table(array); | 129 isolate->object_store()->set_symbol_table(array); |
| 130 } | 130 } |
| 131 | 131 |
| 132 | 132 |
| 133 intptr_t Symbols::Size(Isolate* isolate) { | 133 intptr_t Symbols::Size(Isolate* isolate) { |
| 134 ASSERT(isolate != NULL); | 134 ASSERT(isolate != NULL); |
| 135 Array& symbol_table = Array::Handle(isolate, | 135 Array& symbol_table = Array::Handle(isolate, |
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| 332 OS::Print(" > %" Pd " collisions => %" Pd "\n", i, collision_count_[i]); | 332 OS::Print(" > %" Pd " collisions => %" Pd "\n", i, collision_count_[i]); |
| 333 } | 333 } |
| 334 } | 334 } |
| 335 | 335 |
| 336 | 336 |
| 337 void Symbols::GrowSymbolTable(const Array& symbol_table) { | 337 void Symbols::GrowSymbolTable(const Array& symbol_table) { |
| 338 // TODO(iposva): Avoid exponential growth. | 338 // TODO(iposva): Avoid exponential growth. |
| 339 num_of_grows_ += 1; | 339 num_of_grows_ += 1; |
| 340 intptr_t table_size = symbol_table.Length() - 1; | 340 intptr_t table_size = symbol_table.Length() - 1; |
| 341 intptr_t new_table_size = table_size * 2; | 341 intptr_t new_table_size = table_size * 2; |
| 342 Array& new_symbol_table = Array::Handle(Array::New(new_table_size + 1)); | 342 Array& new_symbol_table = |
| 343 Array::Handle(Array::New(new_table_size + 1, Heap::kOld)); |
| 343 // Copy all elements from the original symbol table to the newly allocated | 344 // Copy all elements from the original symbol table to the newly allocated |
| 344 // array. | 345 // array. |
| 345 String& element = String::Handle(); | 346 String& element = String::Handle(); |
| 346 dart::Object& new_element = Object::Handle(); | 347 dart::Object& new_element = Object::Handle(); |
| 347 for (intptr_t i = 0; i < table_size; i++) { | 348 for (intptr_t i = 0; i < table_size; i++) { |
| 348 element ^= symbol_table.At(i); | 349 element ^= symbol_table.At(i); |
| 349 if (!element.IsNull()) { | 350 if (!element.IsNull()) { |
| 350 intptr_t hash = element.Hash(); | 351 intptr_t hash = element.Hash(); |
| 351 intptr_t index = hash % new_table_size; | 352 intptr_t index = hash % new_table_size; |
| 352 new_element = new_symbol_table.At(index); | 353 new_element = new_symbol_table.At(index); |
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| 473 RawObject* Symbols::GetVMSymbol(intptr_t object_id) { | 474 RawObject* Symbols::GetVMSymbol(intptr_t object_id) { |
| 474 ASSERT(IsVMSymbolId(object_id)); | 475 ASSERT(IsVMSymbolId(object_id)); |
| 475 intptr_t i = (object_id - kMaxPredefinedObjectIds); | 476 intptr_t i = (object_id - kMaxPredefinedObjectIds); |
| 476 if ((i > kIllegal) && (i < Symbols::kMaxPredefinedId)) { | 477 if ((i > kIllegal) && (i < Symbols::kMaxPredefinedId)) { |
| 477 return symbol_handles_[i]->raw(); | 478 return symbol_handles_[i]->raw(); |
| 478 } | 479 } |
| 479 return Object::null(); | 480 return Object::null(); |
| 480 } | 481 } |
| 481 | 482 |
| 482 } // namespace dart | 483 } // namespace dart |
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