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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" |
11 #include "vm/object_store.h" | 11 #include "vm/object_store.h" |
12 #include "vm/raw_object.h" | 12 #include "vm/raw_object.h" |
13 #include "vm/snapshot_ids.h" | 13 #include "vm/snapshot_ids.h" |
14 #include "vm/unicode.h" | 14 #include "vm/unicode.h" |
15 #include "vm/visitor.h" | 15 #include "vm/visitor.h" |
16 | 16 |
17 namespace dart { | 17 namespace dart { |
18 | 18 |
19 RawString* Symbols::predefined_[Symbols::kMaxId]; | 19 RawString* Symbols::predefined_[Symbols::kMaxId]; |
20 | 20 |
21 Symbols::ReadOnlyHandles* Symbols::predefined_handles_ = NULL; | |
22 | |
23 #define DEFINE_SYMBOL_HANDLE(symbol) \ | 21 #define DEFINE_SYMBOL_HANDLE(symbol) \ |
24 String* Symbols::symbol##_handle_ = NULL; | 22 String* Symbols::symbol##_handle_ = NULL; |
25 PREDEFINED_SYMBOL_HANDLES_LIST(DEFINE_SYMBOL_HANDLE) | 23 PREDEFINED_SYMBOL_HANDLES_LIST(DEFINE_SYMBOL_HANDLE) |
26 #undef DEFINE_SYMBOL_HANDLE | 24 #undef DEFINE_SYMBOL_HANDLE |
27 | 25 |
28 static const char* names[] = { | 26 static const char* names[] = { |
29 NULL, | 27 NULL, |
30 | 28 |
31 #define DEFINE_SYMBOL_LITERAL(symbol, literal) \ | 29 #define DEFINE_SYMBOL_LITERAL(symbol, literal) \ |
32 literal, | 30 literal, |
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74 Add(symbol_table, str); | 72 Add(symbol_table, str); |
75 predefined_[i] = str.raw(); | 73 predefined_[i] = str.raw(); |
76 } | 74 } |
77 Object::RegisterSingletonClassNames(); | 75 Object::RegisterSingletonClassNames(); |
78 | 76 |
79 for (int32_t c = 0; c <= kMaxOneCharCodeSymbol; c++) { | 77 for (int32_t c = 0; c <= kMaxOneCharCodeSymbol; c++) { |
80 ASSERT(kMaxPredefinedId + c < kMaxId); | 78 ASSERT(kMaxPredefinedId + c < kMaxId); |
81 predefined_[kMaxPredefinedId + c] = FromUTF32(&c, 1); | 79 predefined_[kMaxPredefinedId + c] = FromUTF32(&c, 1); |
82 } | 80 } |
83 | 81 |
84 predefined_handles_ = new ReadOnlyHandles(); | |
85 #define INITIALIZE_SYMBOL_HANDLE(symbol) \ | 82 #define INITIALIZE_SYMBOL_HANDLE(symbol) \ |
86 symbol##_handle_ = reinterpret_cast<String*>( \ | 83 symbol##_handle_ = reinterpret_cast<String*>( \ |
87 predefined_handles_->AllocateHandle()); \ | 84 Dart::AllocateReadOnlyHandle()); \ |
88 *symbol##_handle_ = symbol(); | 85 *symbol##_handle_ = symbol(); |
89 PREDEFINED_SYMBOL_HANDLES_LIST(INITIALIZE_SYMBOL_HANDLE) | 86 PREDEFINED_SYMBOL_HANDLES_LIST(INITIALIZE_SYMBOL_HANDLE) |
90 #undef INITIALIZE_SYMBOL_HANDLE | 87 #undef INITIALIZE_SYMBOL_HANDLE |
91 } | 88 } |
92 | 89 |
93 | 90 |
94 void Symbols::SetupSymbolTable(Isolate* isolate) { | 91 void Symbols::SetupSymbolTable(Isolate* isolate) { |
95 ASSERT(isolate != NULL); | 92 ASSERT(isolate != NULL); |
96 | 93 |
97 // Setup the symbol table used within the String class. | 94 // Setup the symbol table used within the String class. |
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270 | 267 |
271 | 268 |
272 RawString* Symbols::FromCharCode(int32_t char_code) { | 269 RawString* Symbols::FromCharCode(int32_t char_code) { |
273 if (char_code > kMaxOneCharCodeSymbol) { | 270 if (char_code > kMaxOneCharCodeSymbol) { |
274 return FromUTF32(&char_code, 1); | 271 return FromUTF32(&char_code, 1); |
275 } | 272 } |
276 return predefined_[kNullCharId + char_code]; | 273 return predefined_[kNullCharId + char_code]; |
277 } | 274 } |
278 | 275 |
279 | 276 |
280 bool Symbols::IsPredefinedHandle(uword address) { | |
281 return predefined_handles_->IsValidHandle(address); | |
282 } | |
283 | |
284 | |
285 void Symbols::DumpStats() { | 277 void Symbols::DumpStats() { |
286 if (FLAG_dump_symbol_stats) { | 278 if (FLAG_dump_symbol_stats) { |
287 intptr_t table_size = 0; | 279 intptr_t table_size = 0; |
288 dart::Smi& used = Smi::Handle(); | 280 dart::Smi& used = Smi::Handle(); |
289 Array& symbol_table = Array::Handle(Array::null()); | 281 Array& symbol_table = Array::Handle(Array::null()); |
290 | 282 |
291 // First dump VM symbol table stats. | 283 // First dump VM symbol table stats. |
292 symbol_table = Dart::vm_isolate()->object_store()->symbol_table(); | 284 symbol_table = Dart::vm_isolate()->object_store()->symbol_table(); |
293 table_size = symbol_table.Length() - 1; | 285 table_size = symbol_table.Length() - 1; |
294 used ^= symbol_table.At(table_size); | 286 used ^= symbol_table.At(table_size); |
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450 } | 442 } |
451 | 443 |
452 | 444 |
453 RawObject* Symbols::GetVMSymbol(intptr_t object_id) { | 445 RawObject* Symbols::GetVMSymbol(intptr_t object_id) { |
454 ASSERT(IsVMSymbolId(object_id)); | 446 ASSERT(IsVMSymbolId(object_id)); |
455 intptr_t i = (object_id - kMaxPredefinedObjectIds); | 447 intptr_t i = (object_id - kMaxPredefinedObjectIds); |
456 return (i > 0 && i < Symbols::kMaxId) ? predefined_[i] : Object::null(); | 448 return (i > 0 && i < Symbols::kMaxId) ? predefined_[i] : Object::null(); |
457 } | 449 } |
458 | 450 |
459 } // namespace dart | 451 } // namespace dart |
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