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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/object.h" | 5 #include "vm/object.h" |
6 | 6 |
7 #include "include/dart_api.h" | 7 #include "include/dart_api.h" |
8 #include "platform/assert.h" | 8 #include "platform/assert.h" |
9 #include "vm/assembler.h" | 9 #include "vm/assembler.h" |
10 #include "vm/cpu.h" | 10 #include "vm/cpu.h" |
11 #include "vm/bigint_operations.h" | 11 #include "vm/bigint_operations.h" |
| 12 #include "vm/bit_vector.h" |
12 #include "vm/bootstrap.h" | 13 #include "vm/bootstrap.h" |
13 #include "vm/class_finalizer.h" | 14 #include "vm/class_finalizer.h" |
14 #include "vm/code_generator.h" | 15 #include "vm/code_generator.h" |
15 #include "vm/code_observers.h" | 16 #include "vm/code_observers.h" |
16 #include "vm/code_patcher.h" | 17 #include "vm/code_patcher.h" |
17 #include "vm/compiler.h" | 18 #include "vm/compiler.h" |
18 #include "vm/compiler_stats.h" | 19 #include "vm/compiler_stats.h" |
19 #include "vm/dart.h" | 20 #include "vm/dart.h" |
20 #include "vm/dart_api_state.h" | 21 #include "vm/dart_api_state.h" |
21 #include "vm/dart_entry.h" | 22 #include "vm/dart_entry.h" |
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1134 isolate->object_store()->set_bootstrap_library(ObjectStore::kMirrors, | 1135 isolate->object_store()->set_bootstrap_library(ObjectStore::kMirrors, |
1135 lib); | 1136 lib); |
1136 } | 1137 } |
1137 ASSERT(!lib.IsNull()); | 1138 ASSERT(!lib.IsNull()); |
1138 ASSERT(lib.raw() == Library::MirrorsLibrary()); | 1139 ASSERT(lib.raw() == Library::MirrorsLibrary()); |
1139 | 1140 |
1140 cls = Class::New<MirrorReference>(); | 1141 cls = Class::New<MirrorReference>(); |
1141 object_store->set_mirror_reference_class(cls); | 1142 object_store->set_mirror_reference_class(cls); |
1142 RegisterPrivateClass(cls, Symbols::_MirrorReference(), lib); | 1143 RegisterPrivateClass(cls, Symbols::_MirrorReference(), lib); |
1143 | 1144 |
| 1145 // Pre-register the profiler library so we can place the vm class |
| 1146 // UserTag there rather than the core library. |
| 1147 lib = Library::LookupLibrary(Symbols::DartProfiler()); |
| 1148 if (lib.IsNull()) { |
| 1149 lib = Library::NewLibraryHelper(Symbols::DartProfiler(), true); |
| 1150 lib.Register(); |
| 1151 isolate->object_store()->set_bootstrap_library(ObjectStore::kProfiler, |
| 1152 lib); |
| 1153 } |
| 1154 ASSERT(!lib.IsNull()); |
| 1155 ASSERT(lib.raw() == Library::ProfilerLibrary()); |
| 1156 |
| 1157 lib = Library::LookupLibrary(Symbols::DartProfiler()); |
| 1158 ASSERT(!lib.IsNull()); |
| 1159 cls = Class::New<UserTag>(); |
| 1160 object_store->set_user_tag_class(cls); |
| 1161 RegisterPrivateClass(cls, Symbols::_UserTag(), lib); |
| 1162 |
| 1163 cls = Class::New<Instance>(kIllegalCid); |
| 1164 RegisterClass(cls, Symbols::UserTag(), lib); |
| 1165 cls.set_num_type_arguments(0); |
| 1166 cls.set_num_own_type_arguments(0); |
| 1167 cls.set_is_prefinalized(); |
| 1168 pending_classes.Add(cls); |
| 1169 |
| 1170 |
| 1171 |
1144 // Setup some default native field classes which can be extended for | 1172 // Setup some default native field classes which can be extended for |
1145 // specifying native fields in dart classes. | 1173 // specifying native fields in dart classes. |
1146 Library::InitNativeWrappersLibrary(isolate); | 1174 Library::InitNativeWrappersLibrary(isolate); |
1147 ASSERT(isolate->object_store()->native_wrappers_library() != Library::null()); | 1175 ASSERT(isolate->object_store()->native_wrappers_library() != Library::null()); |
1148 | 1176 |
1149 // Pre-register the typed_data library so the native class implementations | 1177 // Pre-register the typed_data library so the native class implementations |
1150 // can be hooked up before compiling it. | 1178 // can be hooked up before compiling it. |
1151 lib = Library::LookupLibrary(Symbols::DartTypedData()); | 1179 lib = Library::LookupLibrary(Symbols::DartTypedData()); |
1152 if (lib.IsNull()) { | 1180 if (lib.IsNull()) { |
1153 lib = Library::NewLibraryHelper(Symbols::DartTypedData(), true); | 1181 lib = Library::NewLibraryHelper(Symbols::DartTypedData(), true); |
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1432 // Some classes are not stored in the object store. Yet we still need to | 1460 // Some classes are not stored in the object store. Yet we still need to |
1433 // create their Class object so that they get put into the class_table | 1461 // create their Class object so that they get put into the class_table |
1434 // (as a side effect of Class::New()). | 1462 // (as a side effect of Class::New()). |
1435 cls = Class::New<Number>(); | 1463 cls = Class::New<Number>(); |
1436 | 1464 |
1437 cls = Class::New<WeakProperty>(); | 1465 cls = Class::New<WeakProperty>(); |
1438 object_store->set_weak_property_class(cls); | 1466 object_store->set_weak_property_class(cls); |
1439 | 1467 |
1440 cls = Class::New<MirrorReference>(); | 1468 cls = Class::New<MirrorReference>(); |
1441 object_store->set_mirror_reference_class(cls); | 1469 object_store->set_mirror_reference_class(cls); |
| 1470 |
| 1471 cls = Class::New<UserTag>(); |
| 1472 object_store->set_object_class(cls); |
1442 } | 1473 } |
1443 | 1474 |
1444 | 1475 |
1445 void Object::Print() const { | 1476 void Object::Print() const { |
1446 OS::Print("%s\n", ToCString()); | 1477 OS::Print("%s\n", ToCString()); |
1447 } | 1478 } |
1448 | 1479 |
1449 | 1480 |
1450 RawString* Object::DictionaryName() const { | 1481 RawString* Object::DictionaryName() const { |
1451 return String::null(); | 1482 return String::null(); |
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9182 RawLibrary* Library::NativeWrappersLibrary() { | 9213 RawLibrary* Library::NativeWrappersLibrary() { |
9183 return Isolate::Current()->object_store()->native_wrappers_library(); | 9214 return Isolate::Current()->object_store()->native_wrappers_library(); |
9184 } | 9215 } |
9185 | 9216 |
9186 | 9217 |
9187 RawLibrary* Library::TypedDataLibrary() { | 9218 RawLibrary* Library::TypedDataLibrary() { |
9188 return Isolate::Current()->object_store()->typed_data_library(); | 9219 return Isolate::Current()->object_store()->typed_data_library(); |
9189 } | 9220 } |
9190 | 9221 |
9191 | 9222 |
| 9223 RawLibrary* Library::ProfilerLibrary() { |
| 9224 return Isolate::Current()->object_store()->profiler_library(); |
| 9225 } |
| 9226 |
| 9227 |
9192 const char* Library::ToCString() const { | 9228 const char* Library::ToCString() const { |
9193 const char* kFormat = "Library:'%s'"; | 9229 const char* kFormat = "Library:'%s'"; |
9194 const String& name = String::Handle(url()); | 9230 const String& name = String::Handle(url()); |
9195 intptr_t len = OS::SNPrint(NULL, 0, kFormat, name.ToCString()) + 1; | 9231 intptr_t len = OS::SNPrint(NULL, 0, kFormat, name.ToCString()) + 1; |
9196 char* chars = Isolate::Current()->current_zone()->Alloc<char>(len); | 9232 char* chars = Isolate::Current()->current_zone()->Alloc<char>(len); |
9197 OS::SNPrint(chars, len, kFormat, name.ToCString()); | 9233 OS::SNPrint(chars, len, kFormat, name.ToCString()); |
9198 return chars; | 9234 return chars; |
9199 } | 9235 } |
9200 | 9236 |
9201 | 9237 |
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18259 const char* MirrorReference::ToCString() const { | 18295 const char* MirrorReference::ToCString() const { |
18260 return "_MirrorReference"; | 18296 return "_MirrorReference"; |
18261 } | 18297 } |
18262 | 18298 |
18263 | 18299 |
18264 void MirrorReference::PrintToJSONStream(JSONStream* stream, bool ref) const { | 18300 void MirrorReference::PrintToJSONStream(JSONStream* stream, bool ref) const { |
18265 Instance::PrintToJSONStream(stream, ref); | 18301 Instance::PrintToJSONStream(stream, ref); |
18266 } | 18302 } |
18267 | 18303 |
18268 | 18304 |
| 18305 void UserTag::make_active() { |
| 18306 Isolate* isolate = Isolate::Current(); |
| 18307 ASSERT(isolate != NULL); |
| 18308 intptr_t user_tag = tag(); |
| 18309 isolate->set_user_tag(static_cast<uword>(user_tag)); |
| 18310 } |
| 18311 |
| 18312 |
| 18313 RawUserTag* UserTag::New(const String& label, Heap::Space space) { |
| 18314 Isolate* isolate = Isolate::Current(); |
| 18315 ASSERT(isolate->object_store()->user_tag_class() != Class::null()); |
| 18316 ASSERT(isolate->object_store()->tag_table() != GrowableObjectArray::null()); |
| 18317 // Canonicalize by name. |
| 18318 UserTag& result = UserTag::Handle(FindTagInIsolate(isolate, label)); |
| 18319 if (!result.IsNull()) { |
| 18320 // Tag already exists, return existing instance. |
| 18321 return result.raw(); |
| 18322 } |
| 18323 // No tag with label exists, create and register with isolate tag table. |
| 18324 { |
| 18325 RawObject* raw = Object::Allocate(UserTag::kClassId, |
| 18326 UserTag::InstanceSize(), |
| 18327 space); |
| 18328 NoGCScope no_gc; |
| 18329 result ^= raw; |
| 18330 } |
| 18331 result.set_label(label); |
| 18332 intptr_t tag_id = FindAvailableTagId(isolate); |
| 18333 ASSERT(tag_id >= 0); |
| 18334 result.set_tag(tag_id); |
| 18335 AddTagToIsolate(isolate, result); |
| 18336 return result.raw(); |
| 18337 } |
| 18338 |
| 18339 |
| 18340 RawUserTag* UserTag::FindTagInIsolate(Isolate* isolate, const String& label) { |
| 18341 ASSERT(isolate->object_store()->tag_table() != GrowableObjectArray::null()); |
| 18342 const GrowableObjectArray& tag_table = GrowableObjectArray::Handle( |
| 18343 isolate, isolate->object_store()->tag_table()); |
| 18344 UserTag& other = UserTag::Handle(isolate); |
| 18345 String& tag_label = String::Handle(isolate); |
| 18346 for (intptr_t i = 0; i < tag_table.Length(); i++) { |
| 18347 other ^= tag_table.At(i); |
| 18348 ASSERT(!other.IsNull()); |
| 18349 tag_label ^= other.label(); |
| 18350 ASSERT(!tag_label.IsNull()); |
| 18351 if (tag_label.Equals(label)) { |
| 18352 return other.raw(); |
| 18353 } |
| 18354 } |
| 18355 return UserTag::null(); |
| 18356 } |
| 18357 |
| 18358 |
| 18359 void UserTag::AddTagToIsolate(Isolate* isolate, const UserTag& tag) { |
| 18360 ASSERT(isolate->object_store()->tag_table() != GrowableObjectArray::null()); |
| 18361 const GrowableObjectArray& tag_table = GrowableObjectArray::Handle( |
| 18362 isolate, isolate->object_store()->tag_table()); |
| 18363 #if defined(DEBUG) |
| 18364 // Verify that no existing tag has the same tag id. |
| 18365 UserTag& other = UserTag::Handle(isolate); |
| 18366 for (intptr_t i = 0; i < tag_table.Length(); i++) { |
| 18367 other ^= tag_table.At(i); |
| 18368 ASSERT(!other.IsNull()); |
| 18369 ASSERT(tag.tag() != other.tag()); |
| 18370 } |
| 18371 #endif |
| 18372 tag_table.Add(tag); |
| 18373 } |
| 18374 |
| 18375 |
| 18376 bool UserTag::TagTableFull(Isolate* isolate) { |
| 18377 ASSERT(isolate->object_store()->tag_table() != GrowableObjectArray::null()); |
| 18378 const GrowableObjectArray& tag_table = GrowableObjectArray::Handle( |
| 18379 isolate, isolate->object_store()->tag_table()); |
| 18380 ASSERT(tag_table.Length() <= UserTagHelper::kMaxUserTags); |
| 18381 return tag_table.Length() == UserTagHelper::kMaxUserTags; |
| 18382 } |
| 18383 |
| 18384 |
| 18385 intptr_t UserTag::FindAvailableTagId(Isolate* isolate) { |
| 18386 ASSERT(!TagTableFull(isolate)); |
| 18387 ASSERT(isolate->object_store()->tag_table() != GrowableObjectArray::null()); |
| 18388 const GrowableObjectArray& tag_table = GrowableObjectArray::Handle( |
| 18389 isolate, isolate->object_store()->tag_table()); |
| 18390 // Use a bit-vector to collect used tag ids. |
| 18391 BitVector* bv = new BitVector(UserTagHelper::kMaxUserTags); |
| 18392 UserTag& other = UserTag::Handle(isolate); |
| 18393 for (intptr_t i = 0; i < tag_table.Length(); i++) { |
| 18394 other ^= tag_table.At(i); |
| 18395 ASSERT(!other.IsNull()); |
| 18396 ASSERT(other.tag() >= UserTagHelper::kUserTagIdOffset); |
| 18397 ASSERT(other.tag() < |
| 18398 (UserTagHelper::kUserTagIdOffset + UserTagHelper::kMaxUserTags)); |
| 18399 // Mark tag as used. |
| 18400 bv->Add(other.tag() - UserTagHelper::kUserTagIdOffset); |
| 18401 } |
| 18402 // Find first available id. |
| 18403 for (intptr_t i = 0; i < bv->length(); i++) { |
| 18404 if (!bv->Contains(i)) { |
| 18405 return i + UserTagHelper::kUserTagIdOffset; |
| 18406 } |
| 18407 } |
| 18408 // We should always be able to find an available tag id. |
| 18409 UNREACHABLE(); |
| 18410 return -1; |
| 18411 } |
| 18412 |
| 18413 |
| 18414 const char* UserTag::ToCString() const { |
| 18415 const String& tag_label = String::Handle(label()); |
| 18416 return tag_label.ToCString(); |
| 18417 } |
| 18418 |
| 18419 |
| 18420 void UserTag::PrintToJSONStream(JSONStream* stream, bool ref) const { |
| 18421 Instance::PrintToJSONStream(stream, ref); |
| 18422 } |
| 18423 |
| 18424 |
18269 } // namespace dart | 18425 } // namespace dart |
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