StackFrameDepth should be managed per ThreadHeap

third_party/WebKit/Source/platform/heap/Heap.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef Heap_h
 #define Heap_h
 
 #include "platform/PlatformExport.h"
 #include "platform/heap/GCInfo.h"
 #include "platform/heap/HeapPage.h"
 #include "platform/heap/PageMemory.h"
+#include "platform/heap/StackFrameDepth.h"
 #include "platform/heap/ThreadState.h"
 #include "platform/heap/Visitor.h"
 #include "wtf/AddressSanitizer.h"
 #include "wtf/Allocator.h"
 #include "wtf/Assertions.h"
 #include "wtf/Atomics.h"
 #include "wtf/Forward.h"
 #include <memory>
 
 namespace blink {
@@ skipping 176 matching lines @@
     static inline bool isHeapObjectAlive(const UntracedMember<T>& member)
     {
         return isHeapObjectAlive(member.get());
     }
     template<typename T>
     static inline bool isHeapObjectAlive(const T*& ptr)
     {
         return isHeapObjectAlive(ptr);
     }
 
+    StackFrameDepth& stackFrameDepth() { return m_stackFrameDepth; }
+
     RecursiveMutex& threadAttachMutex() { return m_threadAttachMutex; }
     const ThreadStateSet& threads() const { return m_threads; }
     ThreadHeapStats& heapStats() { return m_stats; }
     SafePointBarrier* safePointBarrier() { return m_safePointBarrier.get(); }
     CallbackStack* markingStack() const { return m_markingStack.get(); }
     CallbackStack* postMarkingCallbackStack() const { return m_postMarkingCallbackStack.get(); }
     CallbackStack* globalWeakCallbackStack() const { return m_globalWeakCallbackStack.get(); }
     CallbackStack* ephemeronStack() const { return m_ephemeronStack.get(); }
 
     void attach(ThreadState*);
@@ skipping 161 matching lines @@
     std::unique_ptr<RegionTree> m_regionTree;
     std::unique_ptr<HeapDoesNotContainCache> m_heapDoesNotContainCache;
     std::unique_ptr<SafePointBarrier> m_safePointBarrier;
     std::unique_ptr<FreePagePool> m_freePagePool;
     std::unique_ptr<OrphanedPagePool> m_orphanedPagePool;
     std::unique_ptr<CallbackStack> m_markingStack;
     std::unique_ptr<CallbackStack> m_postMarkingCallbackStack;
     std::unique_ptr<CallbackStack> m_globalWeakCallbackStack;
     std::unique_ptr<CallbackStack> m_ephemeronStack;
     BlinkGC::GCReason m_lastGCReason;
+    StackFrameDepth m_stackFrameDepth;
 
     static ThreadHeap* s_mainThreadHeap;
 
     friend class ThreadState;
 };
 
 template<typename T>
 struct IsEagerlyFinalizedType {
     STATIC_ONLY(IsEagerlyFinalizedType);
 private:
@@ skipping 195 matching lines @@
 void VisitorHelper<Derived>::handleWeakCell(Visitor* self, void* object)
 {
     T** cell = reinterpret_cast<T**>(object);
     if (*cell && !ObjectAliveTrait<T>::isHeapObjectAlive(*cell))
         *cell = nullptr;
 }
 
 } // namespace blink
 
 #endif // Heap_h