Release Oilpan heap singletons prior to LSan leak detection.

third_party/WebKit/Source/platform/heap/ThreadState.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 39 matching lines @@
 };
 
 namespace blink {
 
 class BasePage;
 class CallbackStack;
 class CrossThreadPersistentRegion;
 struct GCInfo;
 class GarbageCollectedMixinConstructorMarker;
 class HeapObjectHeader;
+class PersistentNode;
 class PersistentRegion;
 class BaseHeap;
 class SafePointAwareMutexLocker;
 class SafePointBarrier;
 class ThreadState;
 class Visitor;
 
 // Declare that a class has a pre-finalizer. The pre-finalizer is called
 // before any object gets swept, so it is safe to touch on-heap objects
 // that may be collected in the same GC cycle. If you cannot avoid touching
@@ skipping 432 matching lines @@
     }
     void allocationPointAdjusted(int heapIndex);
     void promptlyFreed(size_t gcInfoIndex);
 
     void accumulateSweepingTime(double time) { m_accumulatedSweepingTime += time; }
 
 #if OS(WIN) && COMPILER(MSVC)
     size_t threadStackSize();
 #endif
 
+#if defined(LEAK_SANITIZER)
+    void registerStaticPersistentNode(PersistentNode*);
+    void releaseStaticPersistentNodes();
+
+    void enterDisabledStaticReferenceRegistrationScope();
+    void exitDisabledStaticReferenceRegistrationScope();
+#endif
+
 private:
     enum SnapshotType {
         HeapSnapshot,
         FreelistSnapshot
     };
 
     ThreadState();
     ~ThreadState();
 
     NO_SANITIZE_ADDRESS void copyStackUntilSafePointScope();
@@ skipping 122 matching lines @@
     // for an object, by processing the m_orderedPreFinalizers back-to-front.
     ListHashSet<PreFinalizer> m_orderedPreFinalizers;
 
     v8::Isolate* m_isolate;
     void (*m_traceDOMWrappers)(v8::Isolate*, Visitor*);
 
 #if defined(ADDRESS_SANITIZER)
     void* m_asanFakeStack;
 #endif
 
+#if defined(LEAK_SANITIZER)
+    // PersistentNodes that are stored in static references;
+    // references we have to clear before initiating LSan's leak detection.
+    HashSet<PersistentNode*> m_staticPersistents;
+
+    // Count that controls scoped disabling of persistent registration.
+    size_t m_disabledStaticPersistentsCount;
+#endif
+
     // Ideally we want to allocate an array of size |gcInfoTableMax| but it will
     // waste memory. Thus we limit the array size to 2^8 and share one entry
     // with multiple types of vectors. This won't be an issue in practice,
     // since there will be less than 2^8 types of objects in common cases.
     static const int likelyToBePromptlyFreedArraySize = (1 << 8);
     static const int likelyToBePromptlyFreedArrayMask = likelyToBePromptlyFreedArraySize - 1;
     OwnPtr<int[]> m_likelyToBePromptlyFreed;
 };
 
 template<ThreadAffinity affinity> class ThreadStateFor;
 
 template<> class ThreadStateFor<MainThreadOnly> {
 public:
     static ThreadState* state()
     {
         // This specialization must only be used from the main thread.
         ASSERT(ThreadState::current()->isMainThread());
         return ThreadState::mainThreadState();
     }
 };
 
 template<> class ThreadStateFor<AnyThread> {
 public:
     static ThreadState* state() { return ThreadState::current(); }
 };
 
 } // namespace blink
 
 #endif // ThreadState_h