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diff -up chromium-78.0.3904.70/third_party/blink/renderer/bindings/core/v8/v8_embedder_graph_builder.cc.v8-tracedreference-fix chromium-78.0.3904.70/third_party/blink/renderer/bindings/core/v8/v8_embedder_graph_builder.cc
--- chromium-78.0.3904.70/third_party/blink/renderer/bindings/core/v8/v8_embedder_graph_builder.cc.v8-tracedreference-fix 2019-10-21 15:06:42.000000000 -0400
+++ chromium-78.0.3904.70/third_party/blink/renderer/bindings/core/v8/v8_embedder_graph_builder.cc 2019-10-23 14:30:25.679541652 -0400
@@ -173,8 +173,9 @@ class GC_PLUGIN_IGNORE(
uint16_t class_id) override;
// v8::EmbedderHeapTracer::TracedGlobalHandleVisitor override.
- void VisitTracedGlobalHandle(
- const v8::TracedGlobal<v8::Value>& value) override;
+ void VisitTracedReference(
+ const v8::TracedReference<v8::Value>& value) override;
+ void VisitTracedGlobalHandle(const v8::TracedGlobal<v8::Value>&) override;
// Visitor overrides.
void VisitRoot(void*, TraceDescriptor, const base::Location&) final;
@@ -508,8 +509,8 @@ void V8EmbedderGraphBuilder::VisitPersis
}
}
-void V8EmbedderGraphBuilder::VisitTracedGlobalHandle(
- const v8::TracedGlobal<v8::Value>& value) {
+void V8EmbedderGraphBuilder::VisitTracedReference(
+ const v8::TracedReference<v8::Value>& value) {
const uint16_t class_id = value.WrapperClassId();
if (class_id != WrapperTypeInfo::kNodeClassId &&
class_id != WrapperTypeInfo::kObjectClassId)
@@ -517,6 +518,11 @@ void V8EmbedderGraphBuilder::VisitTraced
VisitPersistentHandleInternal(value.As<v8::Object>().Get(isolate_), class_id);
}
+void V8EmbedderGraphBuilder::VisitTracedGlobalHandle(
+ const v8::TracedGlobal<v8::Value>&) {
+ CHECK(false) << "Blink does not use v8::TracedGlobal.";
+}
+
void V8EmbedderGraphBuilder::VisitPersistentHandle(
v8::Persistent<v8::Value>* value,
uint16_t class_id) {
diff -up chromium-78.0.3904.70/third_party/blink/renderer/bindings/core/v8/v8_gc_controller.cc.v8-tracedreference-fix chromium-78.0.3904.70/third_party/blink/renderer/bindings/core/v8/v8_gc_controller.cc
--- chromium-78.0.3904.70/third_party/blink/renderer/bindings/core/v8/v8_gc_controller.cc.v8-tracedreference-fix 2019-10-21 15:06:42.000000000 -0400
+++ chromium-78.0.3904.70/third_party/blink/renderer/bindings/core/v8/v8_gc_controller.cc 2019-10-23 14:30:25.683541568 -0400
@@ -260,7 +260,11 @@ class DOMWrapperForwardingVisitor final
VisitHandle(value, class_id);
}
- void VisitTracedGlobalHandle(const v8::TracedGlobal<v8::Value>& value) final {
+ void VisitTracedGlobalHandle(const v8::TracedGlobal<v8::Value>&) final {
+ CHECK(false) << "Blink does not use v8::TracedGlobal.";
+ }
+
+ void VisitTracedReference(const v8::TracedReference<v8::Value>& value) final {
VisitHandle(&value, value.WrapperClassId());
}
diff -up chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/dom_data_store.h.v8-tracedreference-fix chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/dom_data_store.h
--- chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/dom_data_store.h.v8-tracedreference-fix 2019-10-21 15:06:44.000000000 -0400
+++ chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/dom_data_store.h 2019-10-23 14:30:25.685541526 -0400
@@ -229,6 +229,11 @@ class DOMDataStore {
DOMWorldWrapperReference(v8::Isolate* isolate, v8::Local<v8::Object> handle)
: TraceWrapperV8Reference(isolate, handle) {}
+ ~DOMWorldWrapperReference() {
+ // Destruction of a reference should clear it immediately.
+ Clear();
+ }
+
// Move support without write barrier.
DOMWorldWrapperReference(DOMWorldWrapperReference&& other)
: TraceWrapperV8Reference() {
diff -up chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/script_wrappable.h.v8-tracedreference-fix chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/script_wrappable.h
--- chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/script_wrappable.h.v8-tracedreference-fix 2019-10-21 15:06:44.000000000 -0400
+++ chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/script_wrappable.h 2019-10-23 14:30:25.687541484 -0400
@@ -161,6 +161,11 @@ class PLATFORM_EXPORT ScriptWrappable
return main_world_wrapper_.NewLocal(isolate);
}
+ static_assert(
+ std::is_trivially_destructible<
+ TraceWrapperV8Reference<v8::Object>>::value,
+ "TraceWrapperV8Reference<v8::Object> should be trivially destructible.");
+
TraceWrapperV8Reference<v8::Object> main_world_wrapper_;
DISALLOW_COPY_AND_ASSIGN(ScriptWrappable);
diff -up chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/trace_wrapper_v8_reference.h.v8-tracedreference-fix chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/trace_wrapper_v8_reference.h
--- chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/trace_wrapper_v8_reference.h.v8-tracedreference-fix 2019-10-21 15:06:44.000000000 -0400
+++ chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/trace_wrapper_v8_reference.h 2019-10-23 14:30:25.688541463 -0400
@@ -11,15 +11,6 @@
#include "third_party/blink/renderer/platform/heap/unified_heap_marking_visitor.h"
#include "v8/include/v8.h"
-namespace v8 {
-
-template <typename T>
-struct TracedGlobalTrait<v8::TracedGlobal<T>> {
- static constexpr bool kRequiresExplicitDestruction = false;
-};
-
-} // namespace v8
-
namespace blink {
/**
@@ -50,8 +41,8 @@ class TraceWrapperV8Reference {
bool IsEmpty() const { return handle_.IsEmpty(); }
void Clear() { handle_.Reset(); }
- ALWAYS_INLINE const v8::TracedGlobal<T>& Get() const { return handle_; }
- ALWAYS_INLINE v8::TracedGlobal<T>& Get() { return handle_; }
+ ALWAYS_INLINE const v8::TracedReference<T>& Get() const { return handle_; }
+ ALWAYS_INLINE v8::TracedReference<T>& Get() { return handle_; }
template <typename S>
const TraceWrapperV8Reference<S>& Cast() const {
@@ -124,7 +115,7 @@ class TraceWrapperV8Reference {
UnifiedHeapMarkingVisitor::WriteBarrier(UnsafeCast<v8::Value>());
}
- v8::TracedGlobal<T> handle_;
+ v8::TracedReference<T> handle_;
};
} // namespace blink
diff -up chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/wrapper_type_info.h.v8-tracedreference-fix chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/wrapper_type_info.h
--- chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/wrapper_type_info.h.v8-tracedreference-fix 2019-10-21 15:06:44.000000000 -0400
+++ chromium-78.0.3904.70/third_party/blink/renderer/platform/bindings/wrapper_type_info.h 2019-10-23 14:30:25.689541442 -0400
@@ -122,7 +122,7 @@ struct WrapperTypeInfo {
wrapper->SetWrapperClassId(wrapper_class_id);
}
- void ConfigureWrapper(v8::TracedGlobal<v8::Object>* wrapper) const {
+ void ConfigureWrapper(v8::TracedReference<v8::Object>* wrapper) const {
wrapper->SetWrapperClassId(wrapper_class_id);
}
@@ -177,7 +177,7 @@ inline T* GetInternalField(const v8::Per
}
template <typename T, int offset>
-inline T* GetInternalField(const v8::TracedGlobal<v8::Object>& global) {
+inline T* GetInternalField(const v8::TracedReference<v8::Object>& global) {
DCHECK_LT(offset, v8::Object::InternalFieldCount(global));
return reinterpret_cast<T*>(
v8::Object::GetAlignedPointerFromInternalField(global, offset));
@@ -198,7 +198,7 @@ inline ScriptWrappable* ToScriptWrappabl
}
inline ScriptWrappable* ToScriptWrappable(
- const v8::TracedGlobal<v8::Object>& wrapper) {
+ const v8::TracedReference<v8::Object>& wrapper) {
return GetInternalField<ScriptWrappable, kV8DOMWrapperObjectIndex>(wrapper);
}
@@ -219,7 +219,8 @@ inline void* ToUntypedWrappable(const v8
return GetInternalField<void, kV8DOMWrapperObjectIndex>(wrapper);
}
-inline void* ToUntypedWrappable(const v8::TracedGlobal<v8::Object>& wrapper) {
+inline void* ToUntypedWrappable(
+ const v8::TracedReference<v8::Object>& wrapper) {
return GetInternalField<void, kV8DOMWrapperObjectIndex>(wrapper);
}
@@ -233,7 +234,7 @@ inline const WrapperTypeInfo* ToWrapperT
}
inline const WrapperTypeInfo* ToWrapperTypeInfo(
- const v8::TracedGlobal<v8::Object>& wrapper) {
+ const v8::TracedReference<v8::Object>& wrapper) {
return GetInternalField<WrapperTypeInfo, kV8DOMWrapperTypeIndex>(wrapper);
}
diff -up chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/thread_state.cc.v8-tracedreference-fix chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/thread_state.cc
--- chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/thread_state.cc.v8-tracedreference-fix 2019-10-21 15:06:45.000000000 -0400
+++ chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/thread_state.cc 2019-10-23 14:30:25.693541359 -0400
@@ -1451,11 +1451,15 @@ class ClearReferencesInDeadObjectsVisito
value->Reset();
}
- void VisitTracedGlobalHandle(const v8::TracedGlobal<v8::Value>& value) final {
+ void VisitTracedGlobalHandle(const v8::TracedGlobal<v8::Value>&) final {
+ CHECK(false) << "Blink does not use v8::TracedGlobal.";
+ }
+
+ void VisitTracedReference(const v8::TracedReference<v8::Value>& value) final {
// TODO(mlippautz): Avoid const_cast after changing the API to allow
- // modificaton of the TracedGlobal handle.
- if (InDeadObject(&const_cast<v8::TracedGlobal<v8::Value>&>(value)))
- const_cast<v8::TracedGlobal<v8::Value>&>(value).Reset();
+ // modificaton of the handle.
+ if (InDeadObject(&const_cast<v8::TracedReference<v8::Value>&>(value)))
+ const_cast<v8::TracedReference<v8::Value>&>(value).Reset();
}
private:
@@ -1584,11 +1588,15 @@ class UnpoisonHandlesVisitor final
VisitSlot(value, sizeof(v8::Persistent<v8::Value>));
}
- void VisitTracedGlobalHandle(const v8::TracedGlobal<v8::Value>& value) final {
+ void VisitTracedGlobalHandle(const v8::TracedGlobal<v8::Value>&) final {
+ CHECK(false) << "Blink does not use v8::TracedGlobal.";
+ }
+
+ void VisitTracedReference(const v8::TracedReference<v8::Value>& value) final {
// TODO(mlippautz): Avoid const_cast after changing the API to allow
- // modificaton of the TracedGlobal handle.
- VisitSlot(&const_cast<v8::TracedGlobal<v8::Value>&>(value),
- sizeof(v8::TracedGlobal<v8::Value>));
+ // modificaton of the handle.
+ VisitSlot(&const_cast<v8::TracedReference<v8::Value>&>(value),
+ sizeof(v8::TracedReference<v8::Value>));
}
private:
diff -up chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/unified_heap_controller.cc.v8-tracedreference-fix chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/unified_heap_controller.cc
--- chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/unified_heap_controller.cc.v8-tracedreference-fix 2019-10-21 15:06:45.000000000 -0400
+++ chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/unified_heap_controller.cc 2019-10-23 14:32:34.722840885 -0400
@@ -147,16 +147,19 @@ bool UnifiedHeapController::IsTracingDon
return is_tracing_done_;
}
-bool UnifiedHeapController::IsRootForNonTracingGCInternal(
- const v8::TracedGlobal<v8::Value>& handle) {
+namespace {
+
+bool IsRootForNonTracingGCInternal(
+ const v8::TracedReference<v8::Value>& handle) {
const uint16_t class_id = handle.WrapperClassId();
- // Stand-alone TracedGlobal reference or kCustomWrappableId. Keep as root as
+ // Stand-alone reference or kCustomWrappableId. Keep as root as
// we don't know better.
if (class_id != WrapperTypeInfo::kNodeClassId &&
class_id != WrapperTypeInfo::kObjectClassId)
return true;
- const v8::TracedGlobal<v8::Object>& traced = handle.As<v8::Object>();
+ const v8::TracedReference<v8::Object>& traced =
+ handle.template As<v8::Object>();
if (ToWrapperTypeInfo(traced)->IsActiveScriptWrappable() &&
ToScriptWrappable(traced)->HasPendingActivity()) {
return true;
@@ -169,8 +172,10 @@ bool UnifiedHeapController::IsRootForNon
return false;
}
+} // namespace
+
void UnifiedHeapController::ResetHandleInNonTracingGC(
- const v8::TracedGlobal<v8::Value>& handle) {
+ const v8::TracedReference<v8::Value>& handle) {
const uint16_t class_id = handle.WrapperClassId();
// Only consider handles that have not been treated as roots, see
// IsRootForNonTracingGCInternal.
@@ -178,15 +183,21 @@ void UnifiedHeapController::ResetHandleI
class_id != WrapperTypeInfo::kObjectClassId)
return;
- const v8::TracedGlobal<v8::Object>& traced = handle.As<v8::Object>();
+ const v8::TracedReference<v8::Object>& traced = handle.As<v8::Object>();
ToScriptWrappable(traced)->UnsetWrapperIfAny();
}
bool UnifiedHeapController::IsRootForNonTracingGC(
- const v8::TracedGlobal<v8::Value>& handle) {
+ const v8::TracedReference<v8::Value>& handle) {
return IsRootForNonTracingGCInternal(handle);
}
+bool UnifiedHeapController::IsRootForNonTracingGC(
+ const v8::TracedGlobal<v8::Value>& handle) {
+ CHECK(false) << "Blink does not use v8::TracedGlobal.";
+ return false;
+}
+
void UnifiedHeapController::ReportBufferedAllocatedSizeIfPossible() {
DCHECK(base::FeatureList::IsEnabled(
blink::features::kBlinkHeapUnifiedGCScheduling));
diff -up chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/unified_heap_controller.h.v8-tracedreference-fix chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/unified_heap_controller.h
--- chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/unified_heap_controller.h.v8-tracedreference-fix 2019-10-21 15:06:45.000000000 -0400
+++ chromium-78.0.3904.70/third_party/blink/renderer/platform/heap/unified_heap_controller.h 2019-10-23 14:30:25.695541317 -0400
@@ -45,8 +45,9 @@ class PLATFORM_EXPORT UnifiedHeapControl
void RegisterV8References(const std::vector<std::pair<void*, void*>>&) final;
bool AdvanceTracing(double) final;
bool IsTracingDone() final;
+ bool IsRootForNonTracingGC(const v8::TracedReference<v8::Value>&) final;
bool IsRootForNonTracingGC(const v8::TracedGlobal<v8::Value>&) final;
- void ResetHandleInNonTracingGC(const v8::TracedGlobal<v8::Value>&) final;
+ void ResetHandleInNonTracingGC(const v8::TracedReference<v8::Value>&) final;
ThreadState* thread_state() const { return thread_state_; }
@@ -59,9 +60,6 @@ class PLATFORM_EXPORT UnifiedHeapControl
void DecreaseAllocatedSpace(size_t) final {}
private:
- static bool IsRootForNonTracingGCInternal(
- const v8::TracedGlobal<v8::Value>& handle);
-
void ReportBufferedAllocatedSizeIfPossible();
ThreadState* const thread_state_;
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