OLD | NEW |
1 /* | 1 /* |
2 * Copyright (C) 2009 Google Inc. All rights reserved. | 2 * Copyright (C) 2009 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
(...skipping 109 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
120 // is 16 MB and it is full of wrappers (which is almost the worst case). | 120 // is 16 MB and it is full of wrappers (which is almost the worst case). |
121 // Practically speaking, as far as I crawled real web applications, | 121 // Practically speaking, as far as I crawled real web applications, |
122 // the number of wrappers handled by each minor GC cycle is at most 3000
. | 122 // the number of wrappers handled by each minor GC cycle is at most 3000
. |
123 // So this limit is mainly for pathological micro benchmarks. | 123 // So this limit is mainly for pathological micro benchmarks. |
124 const unsigned wrappersHandledByEachMinorGC = 10000; | 124 const unsigned wrappersHandledByEachMinorGC = 10000; |
125 if (m_nodesInNewSpace.size() >= wrappersHandledByEachMinorGC) | 125 if (m_nodesInNewSpace.size() >= wrappersHandledByEachMinorGC) |
126 return; | 126 return; |
127 | 127 |
128 // Casting to a Handle is safe here, since the Persistent doesn't get GC
d | 128 // Casting to a Handle is safe here, since the Persistent doesn't get GC
d |
129 // during the GC prologue. | 129 // during the GC prologue. |
130 ASSERT((*reinterpret_cast<v8::Handle<v8::Value>*>(value))->IsObject()); | 130 ASSERT((*reinterpret_cast<v8::Local<v8::Value>*>(value))->IsObject()); |
131 v8::Handle<v8::Object>* wrapper = reinterpret_cast<v8::Handle<v8::Object
>*>(value); | 131 v8::Local<v8::Object>* wrapper = reinterpret_cast<v8::Local<v8::Object>*
>(value); |
132 ASSERT(V8DOMWrapper::hasInternalFieldsSet(*wrapper)); | 132 ASSERT(V8DOMWrapper::hasInternalFieldsSet(*wrapper)); |
133 ASSERT(V8Node::hasInstance(*wrapper, m_isolate)); | 133 ASSERT(V8Node::hasInstance(*wrapper, m_isolate)); |
134 Node* node = V8Node::toImpl(*wrapper); | 134 Node* node = V8Node::toImpl(*wrapper); |
135 // A minor DOM GC can handle only node wrappers in the main world. | 135 // A minor DOM GC can handle only node wrappers in the main world. |
136 // Note that node->wrapper().IsEmpty() returns true for nodes that | 136 // Note that node->wrapper().IsEmpty() returns true for nodes that |
137 // do not have wrappers in the main world. | 137 // do not have wrappers in the main world. |
138 if (node->containsWrapper()) { | 138 if (node->containsWrapper()) { |
139 const WrapperTypeInfo* type = toWrapperTypeInfo(*wrapper); | 139 const WrapperTypeInfo* type = toWrapperTypeInfo(*wrapper); |
140 ActiveDOMObject* activeDOMObject = type->toActiveDOMObject(*wrapper)
; | 140 ActiveDOMObject* activeDOMObject = type->toActiveDOMObject(*wrapper)
; |
141 if (activeDOMObject && activeDOMObject->hasPendingActivity()) | 141 if (activeDOMObject && activeDOMObject->hasPendingActivity()) |
(...skipping 111 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
253 { | 253 { |
254 } | 254 } |
255 | 255 |
256 virtual void VisitPersistentHandle(v8::Persistent<v8::Value>* value, uint16_
t classId) override | 256 virtual void VisitPersistentHandle(v8::Persistent<v8::Value>* value, uint16_
t classId) override |
257 { | 257 { |
258 if (classId != WrapperTypeInfo::NodeClassId && classId != WrapperTypeInf
o::ObjectClassId) | 258 if (classId != WrapperTypeInfo::NodeClassId && classId != WrapperTypeInf
o::ObjectClassId) |
259 return; | 259 return; |
260 | 260 |
261 // Casting to a Handle is safe here, since the Persistent doesn't get GC
d | 261 // Casting to a Handle is safe here, since the Persistent doesn't get GC
d |
262 // during the GC prologue. | 262 // during the GC prologue. |
263 ASSERT((*reinterpret_cast<v8::Handle<v8::Value>*>(value))->IsObject()); | 263 ASSERT((*reinterpret_cast<v8::Local<v8::Value>*>(value))->IsObject()); |
264 v8::Handle<v8::Object>* wrapper = reinterpret_cast<v8::Handle<v8::Object
>*>(value); | 264 v8::Local<v8::Object>* wrapper = reinterpret_cast<v8::Local<v8::Object>*
>(value); |
265 ASSERT(V8DOMWrapper::hasInternalFieldsSet(*wrapper)); | 265 ASSERT(V8DOMWrapper::hasInternalFieldsSet(*wrapper)); |
266 | 266 |
267 if (value->IsIndependent()) | 267 if (value->IsIndependent()) |
268 return; | 268 return; |
269 | 269 |
270 const WrapperTypeInfo* type = toWrapperTypeInfo(*wrapper); | 270 const WrapperTypeInfo* type = toWrapperTypeInfo(*wrapper); |
271 | 271 |
272 ActiveDOMObject* activeDOMObject = type->toActiveDOMObject(*wrapper); | 272 ActiveDOMObject* activeDOMObject = type->toActiveDOMObject(*wrapper); |
273 if (activeDOMObject && activeDOMObject->hasPendingActivity()) { | 273 if (activeDOMObject && activeDOMObject->hasPendingActivity()) { |
274 m_isolate->SetObjectGroupId(*value, liveRootId()); | 274 m_isolate->SetObjectGroupId(*value, liveRootId()); |
(...skipping 214 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
489 { | 489 { |
490 } | 490 } |
491 | 491 |
492 virtual void VisitPersistentHandle(v8::Persistent<v8::Value>* value, uint16_
t classId) override | 492 virtual void VisitPersistentHandle(v8::Persistent<v8::Value>* value, uint16_
t classId) override |
493 { | 493 { |
494 if (classId != WrapperTypeInfo::NodeClassId && classId != WrapperTypeInf
o::ObjectClassId) | 494 if (classId != WrapperTypeInfo::NodeClassId && classId != WrapperTypeInf
o::ObjectClassId) |
495 return; | 495 return; |
496 | 496 |
497 // Casting to a Handle is safe here, since the Persistent doesn't get GC
d | 497 // Casting to a Handle is safe here, since the Persistent doesn't get GC
d |
498 // during tracing. | 498 // during tracing. |
499 ASSERT((*reinterpret_cast<v8::Handle<v8::Value>*>(value))->IsObject()); | 499 ASSERT((*reinterpret_cast<v8::Local<v8::Value>*>(value))->IsObject()); |
500 v8::Handle<v8::Object>* wrapper = reinterpret_cast<v8::Handle<v8::Object
>*>(value); | 500 v8::Local<v8::Object>* wrapper = reinterpret_cast<v8::Local<v8::Object>*
>(value); |
501 ASSERT(V8DOMWrapper::hasInternalFieldsSet(*wrapper)); | 501 ASSERT(V8DOMWrapper::hasInternalFieldsSet(*wrapper)); |
502 if (m_visitor) | 502 if (m_visitor) |
503 toWrapperTypeInfo(*wrapper)->trace(m_visitor, toScriptWrappable(*wra
pper)); | 503 toWrapperTypeInfo(*wrapper)->trace(m_visitor, toScriptWrappable(*wra
pper)); |
504 } | 504 } |
505 | 505 |
506 private: | 506 private: |
507 Visitor* m_visitor; | 507 Visitor* m_visitor; |
508 }; | 508 }; |
509 | 509 |
510 void V8GCController::traceDOMWrappers(v8::Isolate* isolate, Visitor* visitor) | 510 void V8GCController::traceDOMWrappers(v8::Isolate* isolate, Visitor* visitor) |
511 { | 511 { |
512 DOMWrapperTracer tracer(visitor); | 512 DOMWrapperTracer tracer(visitor); |
513 v8::V8::VisitHandlesWithClassIds(isolate, &tracer); | 513 v8::V8::VisitHandlesWithClassIds(isolate, &tracer); |
514 } | 514 } |
515 | 515 |
516 } // namespace blink | 516 } // namespace blink |
OLD | NEW |