Oilpan: Make the GC heuristics saner

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 304 matching lines @@
     static ThreadState* mainThreadState()
     {
         return reinterpret_cast<ThreadState*>(s_mainThreadStateStorage);
     }
 
     bool isMainThread() const { return this == mainThreadState(); }
 #if ENABLE(ASSERT)
     bool checkThread() const { return m_thread == currentThread(); }
 #endif
 
-    void didV8MajorGC();
-
     void performIdleGC(double deadlineSeconds);
     void performIdleLazySweep(double deadlineSeconds);
 
     void scheduleIdleGC();
     void scheduleIdleLazySweep();
     void schedulePreciseGC();
     void schedulePageNavigationGCIfNeeded(float estimatedRemovalRatio);
     void schedulePageNavigationGC();
     void scheduleGCIfNeeded();
     void setGCState(GCState);
@@ skipping 138 matching lines @@
 #endif
 
     // A region of PersistentNodes allocated on the given thread.
     PersistentRegion* persistentRegion() const { return m_persistentRegion.get(); }
     // A region of PersistentNodes not owned by any particular thread.
     static CrossThreadPersistentRegion& crossThreadPersistentRegion();
 
     // TODO(haraken): Currently CrossThreadPersistent handles are not counted.
     // This wouldn't be a big deal because # of CrossThreadPersistents is small,
     // but should be fixed.
-    void persistentAllocated()
+    void wrapperAllocated()
     {
-        ++m_persistentAllocated;
+        ++m_wrapperAllocated;
     }
-    void persistentFreed()
+    void wrapperFreed()
     {
-        ++m_persistentFreed;
+        ++m_wrapperFreed;
     }
-    void updatePersistentCounters();
+    void updateWrapperCounters();
 
     // Visit local thread stack and trace all pointers conservatively.
     void visitStack(Visitor*);
 
     // Visit the asan fake stack frame corresponding to a slot on the
     // real machine stack if there is one.
     void visitAsanFakeStackForPointer(Visitor*, Address);
 
     // Visit all persistents allocated on this thread.
     void visitPersistents(Visitor*);
@@ skipping 187 matching lines @@
     bool shouldScheduleIdleGC();
     bool shouldSchedulePreciseGC();
     bool shouldForceConservativeGC();
     // estimatedRemovalRatio is the estimated ratio of objects that will be no
     // longer necessary due to the navigation.
     bool shouldSchedulePageNavigationGC(float estimatedRemovalRatio);
 
     // Internal helper for GC policy handling code. Returns true if
     // an urgent conservative GC is now needed due to memory pressure.
     bool shouldForceMemoryPressureGC();
-    size_t estimatedLiveObjectSize();
-    size_t currentObjectSize();
+    double partitionAllocGrowingRate();
+    double heapGrowingRate();
+    bool judgeGCThreshold(size_t allocatedObjectSizeThreshold, double heapGrowingRateThreshold, double partitionAllocGrowingRateThreshold);
 
     void runScheduledGC(StackState);
 
     void eagerSweep();
 
 #if defined(ADDRESS_SANITIZER)
     void poisonEagerHeap(Poisoning);
     void poisonAllHeaps();
 #endif
 
@@ skipping 46 matching lines @@
     StackState m_stackState;
     intptr_t* m_startOfStack;
     intptr_t* m_endOfStack;
     void* m_safePointScopeMarker;
     Vector<Address> m_safePointStackCopy;
     bool m_atSafePoint;
     InterruptorVector m_interruptors;
     bool m_sweepForbidden;
     size_t m_noAllocationCount;
     size_t m_gcForbiddenCount;
-    int m_persistentAllocated;
-    int m_persistentFreed;
+    int m_wrapperAllocated;
+    int m_wrapperFreed;
     BaseHeap* m_heaps[NumberOfHeaps];
 
     int m_vectorBackingHeapIndex;
     size_t m_heapAges[NumberOfHeaps];
     size_t m_currentHeapAges;
 
     bool m_isTerminating;
     GarbageCollectedMixinConstructorMarker* m_gcMixinMarker;
 
     bool m_shouldFlushHeapDoesNotContainCache;
@@ skipping 38 matching lines @@
 };
 
 template<> class ThreadStateFor<AnyThread> {
 public:
     static ThreadState* state() { return ThreadState::current(); }
 };
 
 } // namespace blink
 
 #endif // ThreadState_h