Add a UseCounter that measures the amount of memory used in PartitionAlloc

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 26 matching lines @@
 #include "platform/heap/CallbackStack.h"
 #include "platform/heap/MarkingVisitor.h"
 #include "platform/heap/SafePoint.h"
 #include "platform/heap/ThreadState.h"
 #include "public/platform/Platform.h"
 #include "wtf/Assertions.h"
 #include "wtf/ContainerAnnotations.h"
 #include "wtf/LeakAnnotations.h"
 #include "wtf/MainThread.h"
 #include "wtf/PageAllocator.h"
+#include "wtf/Partitions.h"
 #include "wtf/PassOwnPtr.h"
 #if ENABLE(GC_PROFILING)
 #include "platform/TracedValue.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/StringHash.h"
 #include <stdio.h>
 #include <utility>
 #endif
@@ skipping 2228 matching lines @@
 #endif
 
     double markingTimeInMilliseconds = WTF::currentTimeMS() - timeStamp;
     s_estimatedMarkingTimePerByte = totalObjectSize ? (markingTimeInMilliseconds / 1000 / totalObjectSize) : 0;
 
     if (Platform::current()) {
         Platform::current()->histogramCustomCounts("BlinkGC.CollectGarbage", markingTimeInMilliseconds, 0, 10 * 1000, 50);
         Platform::current()->histogramCustomCounts("BlinkGC.TotalObjectSpace", Heap::allocatedObjectSize() / 1024, 0, 4 * 1024 * 1024, 50);
         Platform::current()->histogramCustomCounts("BlinkGC.TotalAllocatedSpace", Heap::allocatedSpace() / 1024, 0, 4 * 1024 * 1024, 50);
         Platform::current()->histogramEnumeration("BlinkGC.GCReason", reason, NumberOfGCReason);
+        Heap::reportMemoryUsageHistogram();
+        WTF::Partitions::reportMemoryUsageHistogram();
     }
 
     if (state->isMainThread())
         ScriptForbiddenScope::exit();
 }
 
 void Heap::collectGarbageForTerminatingThread(ThreadState* state)
 {
     // We explicitly do not enter a safepoint while doing thread specific
     // garbage collection since we don't want to allow a global GC at the
@@ skipping 100 matching lines @@
     // 8 ms is long enough for low-end mobile devices to mark common
     // real-world object graphs.
     if (s_estimatedMarkingTimePerByte == 0)
         return 0.008;
 
     // Assuming that the collection rate of this GC will be mostly equal to
     // the collection rate of the last GC, estimate the marking time of this GC.
     return s_estimatedMarkingTimePerByte * (Heap::allocatedObjectSize() + Heap::markedObjectSize());
 }
 
-void Heap::reportMemoryUsage()
+void Heap::reportMemoryUsageHistogram()
 {
     static size_t supportedMaxSizeInMB = 4 * 1024;
     static size_t observedMaxSizeInMB = 0;
 
     // We only report the memory in the main thread.
     if (!isMainThread())
         return;
     // +1 is for rounding up the sizeInMB.
     size_t sizeInMB = Heap::allocatedSpace() / 1024 / 1024 + 1;
     if (sizeInMB >= supportedMaxSizeInMB)
@@ skipping 265 matching lines @@
 // We don't want to use 0 KB for the initial value because it may end up
 // triggering the first GC of some thread too prematurely.
 size_t Heap::s_estimatedLiveObjectSize = 512 * 1024;
 
 size_t Heap::s_externallyAllocatedBytes = 0;
 size_t Heap::s_externallyAllocatedBytesAlive = 0;
 unsigned Heap::s_requestedUrgentGC = false;
 double Heap::s_estimatedMarkingTimePerByte = 0.0;
 
 } // namespace blink