Oilpan: Trace Heap memory statistics more often.

Source/platform/heap/ThreadState.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 634 matching lines @@
 
 void ThreadState::scheduleGCIfNeeded()
 {
     checkThread();
     // Allocation is allowed during sweeping, but those allocations should not
     // trigger nested GCs.
     if (isSweepingInProgress())
         return;
     ASSERT(!sweepForbidden());
 
-#if ENABLE(GC_PROFILING)
-    // These values are divided by 1024 to avoid overflow in practical cases (TRACE_COUNTER values are 32-bit ints).
-    // They are capped to INT_MAX just in case.
-    TRACE_COUNTER1("blink_gc", "Heap::estimatedLiveObjectSizeKB", std::min(Heap::estimatedLiveObjectSize() / 1024, static_cast<size_t>(INT_MAX)));
-    TRACE_COUNTER1("blink_gc", "Heap::allocatedObjectSizeKB", std::min(Heap::allocatedObjectSize() / 1024, static_cast<size_t>(INT_MAX)));
-    TRACE_COUNTER1("blink_gc", "Heap::markedObjectSizeKB", std::min(Heap::markedObjectSize() / 1024, static_cast<size_t>(INT_MAX)));
-    TRACE_COUNTER1("blink_gc", "Partitions::totalSizeOfCommittedPagesKB", std::min(WTF::Partitions::totalSizeOfCommittedPages() / 1024, static_cast<size_t>(INT_MAX)));
-#endif
+    Heap::reportMemoryUsageForTracing();
 
     if (shouldForceConservativeGC()) {
         Heap::collectGarbage(HeapPointersOnStack, GCWithoutSweep, Heap::ConservativeGC);
         return;
     }
     if (shouldSchedulePreciseGC())
         schedulePreciseGC();
     else if (shouldScheduleIdleGC())
         scheduleIdleGC();
 }
@@ skipping 419 matching lines @@
 
         if (isMainThread())
             ScriptForbiddenScope::exit();
     }
 
     postSweep();
 }
 
 void ThreadState::postSweep()
 {
+    Heap::reportMemoryUsageForTracing();
+
     if (isMainThread()) {
         // At the point where the main thread finishes lazy sweeping,
         // we estimate the live object size. Heap::markedObjectSize()
         // may be underestimated if any other thread has not finished
         // lazy sweeping.
         Heap::setEstimatedLiveObjectSize(Heap::markedObjectSize() + Heap::externalObjectSizeAtLastGC());
     }
 
     switch (gcState()) {
     case Sweeping:
@@ skipping 357 matching lines @@
         json->beginArray(it->key.ascii().data());
         for (size_t age = 0; age <= maxHeapObjectAge; ++age)
             json->pushInteger(it->value.ages[age]);
         json->endArray();
     }
     TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(TRACE_DISABLED_BY_DEFAULT("blink_gc"), statsName, this, json.release());
 }
 #endif
 
 } // namespace blink