[Oilpan] Unify memory usage reporters of Oilpan

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

 /*
  * 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 688 matching lines @@
     ASSERT(ThreadState::current()->isInGC());
 
     Heap::reportMemoryUsageForTracing();
 
     s_objectSizeAtLastGC = s_allocatedObjectSize + s_markedObjectSize;
     s_partitionAllocSizeAtLastGC = WTF::Partitions::totalSizeOfCommittedPages();
     s_allocatedObjectSize = 0;
     s_markedObjectSize = 0;
     s_wrapperCountAtLastGC = s_wrapperCount;
     s_collectedWrapperCount = 0;
+    for (ThreadState* state : ThreadState::attachedThreads())
+        state->resetHeapCounters();
 }
 
 CallbackStack* Heap::s_markingStack;
 CallbackStack* Heap::s_postMarkingCallbackStack;
 CallbackStack* Heap::s_globalWeakCallbackStack;
 CallbackStack* Heap::s_ephemeronStack;
 HeapDoesNotContainCache* Heap::s_heapDoesNotContainCache;
 bool Heap::s_shutdownCalled = false;
 FreePagePool* Heap::s_freePagePool;
 OrphanedPagePool* Heap::s_orphanedPagePool;
 RegionTree* Heap::s_regionTree = nullptr;
 size_t Heap::s_allocatedSpace = 0;
 size_t Heap::s_allocatedObjectSize = 0;
 size_t Heap::s_objectSizeAtLastGC = 0;
 size_t Heap::s_markedObjectSize = 0;
 size_t Heap::s_markedObjectSizeAtLastCompleteSweep = 0;
 size_t Heap::s_wrapperCount = 0;
 size_t Heap::s_wrapperCountAtLastGC = 0;
 size_t Heap::s_collectedWrapperCount = 0;
 size_t Heap::s_partitionAllocSizeAtLastGC = 0;
 double Heap::s_estimatedMarkingTimePerByte = 0.0;
 bool Heap::s_isLowEndDevice = false;
 #if ENABLE(ASSERT)
 uint16_t Heap::s_gcGeneration = 0;
 #endif
 
 } // namespace blink