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| 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 |
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| 109 | 109 |
| 110 // MinorGC does not collect objects because it may be expensive to | 110 // MinorGC does not collect objects because it may be expensive to |
| 111 // update references during minorGC | 111 // update references during minorGC |
| 112 if (classId == WrapperTypeInfo::ObjectClassId) { | 112 if (classId == WrapperTypeInfo::ObjectClassId) { |
| 113 v8::Persistent<v8::Object>::Cast(*value).MarkActive(); | 113 v8::Persistent<v8::Object>::Cast(*value).MarkActive(); |
| 114 return; | 114 return; |
| 115 } | 115 } |
| 116 | 116 |
| 117 v8::Local<v8::Object> wrapper = v8::Local<v8::Object>::New(m_isolate, v8
::Persistent<v8::Object>::Cast(*value)); | 117 v8::Local<v8::Object> wrapper = v8::Local<v8::Object>::New(m_isolate, v8
::Persistent<v8::Object>::Cast(*value)); |
| 118 ASSERT(V8DOMWrapper::hasInternalFieldsSet(wrapper)); | 118 ASSERT(V8DOMWrapper::hasInternalFieldsSet(wrapper)); |
| 119 if (toWrapperTypeInfo(wrapper)->hasPendingActivity(wrapper)) { | 119 if (toWrapperTypeInfo(wrapper)->isActiveScriptWrappable() |
| 120 && toScriptWrappable(wrapper)->hasPendingActivity()) { |
| 120 v8::Persistent<v8::Object>::Cast(*value).MarkActive(); | 121 v8::Persistent<v8::Object>::Cast(*value).MarkActive(); |
| 121 return; | 122 return; |
| 122 } | 123 } |
| 123 | 124 |
| 124 if (classId == WrapperTypeInfo::NodeClassId) { | 125 if (classId == WrapperTypeInfo::NodeClassId) { |
| 125 ASSERT(V8Node::hasInstance(wrapper, m_isolate)); | 126 ASSERT(V8Node::hasInstance(wrapper, m_isolate)); |
| 126 Node* node = V8Node::toImpl(wrapper); | 127 Node* node = V8Node::toImpl(wrapper); |
| 127 if (node->hasEventListeners()) { | 128 if (node->hasEventListeners()) { |
| 128 v8::Persistent<v8::Object>::Cast(*value).MarkActive(); | 129 v8::Persistent<v8::Object>::Cast(*value).MarkActive(); |
| 129 return; | 130 return; |
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| 150 , m_liveRootGroupIdSet(false) | 151 , m_liveRootGroupIdSet(false) |
| 151 , m_constructRetainedObjectInfos(constructRetainedObjectInfos) | 152 , m_constructRetainedObjectInfos(constructRetainedObjectInfos) |
| 152 { | 153 { |
| 153 } | 154 } |
| 154 | 155 |
| 155 void VisitPersistentHandle(v8::Persistent<v8::Value>* value, uint16_t classI
d) override | 156 void VisitPersistentHandle(v8::Persistent<v8::Value>* value, uint16_t classI
d) override |
| 156 { | 157 { |
| 157 if (classId != WrapperTypeInfo::NodeClassId && classId != WrapperTypeInf
o::ObjectClassId) | 158 if (classId != WrapperTypeInfo::NodeClassId && classId != WrapperTypeInf
o::ObjectClassId) |
| 158 return; | 159 return; |
| 159 | 160 |
| 161 if (value->IsIndependent()) |
| 162 return; |
| 163 |
| 160 v8::Local<v8::Object> wrapper = v8::Local<v8::Object>::New(m_isolate, v8
::Persistent<v8::Object>::Cast(*value)); | 164 v8::Local<v8::Object> wrapper = v8::Local<v8::Object>::New(m_isolate, v8
::Persistent<v8::Object>::Cast(*value)); |
| 161 ASSERT(V8DOMWrapper::hasInternalFieldsSet(wrapper)); | 165 DCHECK(V8DOMWrapper::hasInternalFieldsSet(wrapper)); |
| 162 | 166 |
| 163 const WrapperTypeInfo* type = toWrapperTypeInfo(wrapper); | 167 const WrapperTypeInfo* type = toWrapperTypeInfo(wrapper); |
| 164 if (type->hasPendingActivity(wrapper)) { | 168 if (type->isActiveScriptWrappable() |
| 165 // If you hit this assert, you'll need to add a [DependentiLifetime] | 169 && toScriptWrappable(wrapper)->hasPendingActivity()) { |
| 166 // extended attribute to the DOM interface. A DOM interface that | |
| 167 // overrides hasPendingActivity must be marked as [DependentLifetime
]. | |
| 168 RELEASE_ASSERT(!value->IsIndependent()); | |
| 169 m_isolate->SetObjectGroupId(*value, liveRootId()); | 170 m_isolate->SetObjectGroupId(*value, liveRootId()); |
| 170 ++m_domObjectsWithPendingActivity; | 171 ++m_domObjectsWithPendingActivity; |
| 171 } | 172 } |
| 172 | 173 |
| 173 if (value->IsIndependent()) | |
| 174 return; | |
| 175 | |
| 176 if (classId == WrapperTypeInfo::NodeClassId) { | 174 if (classId == WrapperTypeInfo::NodeClassId) { |
| 177 DCHECK(V8Node::hasInstance(wrapper, m_isolate)); | 175 DCHECK(V8Node::hasInstance(wrapper, m_isolate)); |
| 178 Node* node = V8Node::toImpl(wrapper); | 176 Node* node = V8Node::toImpl(wrapper); |
| 179 if (node->hasEventListeners()) | 177 if (node->hasEventListeners()) |
| 180 addReferencesForNodeWithEventListeners(m_isolate, node, v8::Pers
istent<v8::Object>::Cast(*value)); | 178 addReferencesForNodeWithEventListeners(m_isolate, node, v8::Pers
istent<v8::Object>::Cast(*value)); |
| 181 Node* root = V8GCController::opaqueRootForGC(m_isolate, node); | 179 Node* root = V8GCController::opaqueRootForGC(m_isolate, node); |
| 182 m_isolate->SetObjectGroupId(*value, v8::UniqueId(reinterpret_cast<in
tptr_t>(root))); | 180 m_isolate->SetObjectGroupId(*value, v8::UniqueId(reinterpret_cast<in
tptr_t>(root))); |
| 183 if (m_constructRetainedObjectInfos) | 181 if (m_constructRetainedObjectInfos) |
| 184 m_groupsWhichNeedRetainerInfo.append(root); | 182 m_groupsWhichNeedRetainerInfo.append(root); |
| 185 } else if (classId == WrapperTypeInfo::ObjectClassId) { | 183 } else if (classId == WrapperTypeInfo::ObjectClassId) { |
| 186 type->visitDOMWrapper(m_isolate, toScriptWrappable(wrapper), v8::Per
sistent<v8::Object>::Cast(*value)); | 184 type->visitDOMWrapper(m_isolate, toScriptWrappable(wrapper), v8::Per
sistent<v8::Object>::Cast(*value)); |
| 187 } else { | 185 } else { |
| 188 ASSERT_NOT_REACHED(); | 186 NOTREACHED(); |
| 189 } | 187 } |
| 190 } | 188 } |
| 191 | 189 |
| 192 void notifyFinished() | 190 void notifyFinished() |
| 193 { | 191 { |
| 194 if (!m_constructRetainedObjectInfos) | 192 if (!m_constructRetainedObjectInfos) |
| 195 return; | 193 return; |
| 196 std::sort(m_groupsWhichNeedRetainerInfo.begin(), m_groupsWhichNeedRetain
erInfo.end()); | 194 std::sort(m_groupsWhichNeedRetainerInfo.begin(), m_groupsWhichNeedRetain
erInfo.end()); |
| 197 Node* alreadyAdded = 0; | 195 Node* alreadyAdded = 0; |
| 198 v8::HeapProfiler* profiler = m_isolate->GetHeapProfiler(); | 196 v8::HeapProfiler* profiler = m_isolate->GetHeapProfiler(); |
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| 450 // we don't need to check other wrappers. | 448 // we don't need to check other wrappers. |
| 451 if (m_pendingActivityFound) | 449 if (m_pendingActivityFound) |
| 452 return; | 450 return; |
| 453 | 451 |
| 454 if (classId != WrapperTypeInfo::NodeClassId && classId != WrapperTypeInf
o::ObjectClassId) | 452 if (classId != WrapperTypeInfo::NodeClassId && classId != WrapperTypeInf
o::ObjectClassId) |
| 455 return; | 453 return; |
| 456 | 454 |
| 457 v8::Local<v8::Object> wrapper = v8::Local<v8::Object>::New(m_isolate, v8
::Persistent<v8::Object>::Cast(*value)); | 455 v8::Local<v8::Object> wrapper = v8::Local<v8::Object>::New(m_isolate, v8
::Persistent<v8::Object>::Cast(*value)); |
| 458 ASSERT(V8DOMWrapper::hasInternalFieldsSet(wrapper)); | 456 ASSERT(V8DOMWrapper::hasInternalFieldsSet(wrapper)); |
| 459 // The ExecutionContext check is heavy, so it should be done at the last
. | 457 // The ExecutionContext check is heavy, so it should be done at the last
. |
| 460 if (toWrapperTypeInfo(wrapper)->hasPendingActivity(wrapper) | 458 if (toWrapperTypeInfo(wrapper)->isActiveScriptWrappable() |
| 459 && toScriptWrappable(wrapper)->hasPendingActivity() |
| 461 // TODO(haraken): Currently we don't have a way to get a creation | 460 // TODO(haraken): Currently we don't have a way to get a creation |
| 462 // context from a wrapper. We should implement the way and enable | 461 // context from a wrapper. We should implement the way and enable |
| 463 // the following condition. | 462 // the following condition. |
| 464 // | 463 // |
| 465 // This condition affects only compositor workers, where one isolate | 464 // This condition affects only compositor workers, where one isolate |
| 466 // is shared by multiple workers. If we don't have the condition, | 465 // is shared by multiple workers. If we don't have the condition, |
| 467 // a worker object for a compositor worker doesn't get collected | 466 // a worker object for a compositor worker doesn't get collected |
| 468 // until all compositor workers in the same isolate lose pending | 467 // until all compositor workers in the same isolate lose pending |
| 469 // activities. In other words, not having the condition delays | 468 // activities. In other words, not having the condition delays |
| 470 // destruction of a worker object of a compositor worker. | 469 // destruction of a worker object of a compositor worker. |
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| 491 DEFINE_THREAD_SAFE_STATIC_LOCAL(CustomCountHistogram, scanPendingActivityHis
togram, new CustomCountHistogram("Blink.ScanPendingActivityDuration", 1, 1000, 5
0)); | 490 DEFINE_THREAD_SAFE_STATIC_LOCAL(CustomCountHistogram, scanPendingActivityHis
togram, new CustomCountHistogram("Blink.ScanPendingActivityDuration", 1, 1000, 5
0)); |
| 492 double startTime = WTF::currentTimeMS(); | 491 double startTime = WTF::currentTimeMS(); |
| 493 v8::HandleScope scope(isolate); | 492 v8::HandleScope scope(isolate); |
| 494 PendingActivityVisitor visitor(isolate, executionContext); | 493 PendingActivityVisitor visitor(isolate, executionContext); |
| 495 toIsolate(executionContext)->VisitHandlesWithClassIds(&visitor); | 494 toIsolate(executionContext)->VisitHandlesWithClassIds(&visitor); |
| 496 scanPendingActivityHistogram.count(static_cast<int>(WTF::currentTimeMS() - s
tartTime)); | 495 scanPendingActivityHistogram.count(static_cast<int>(WTF::currentTimeMS() - s
tartTime)); |
| 497 return visitor.pendingActivityFound(); | 496 return visitor.pendingActivityFound(); |
| 498 } | 497 } |
| 499 | 498 |
| 500 } // namespace blink | 499 } // namespace blink |
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