Dump type statistics of malloc'ed objects.

third_party/tcmalloc/chromium/src/heap-profile-table.h

Index: third_party/tcmalloc/chromium/src/heap-profile-table.h
diff --git a/third_party/tcmalloc/chromium/src/heap-profile-table.h b/third_party/tcmalloc/chromium/src/heap-profile-table.h
index 34697a0392b6a424a2d003be3882287dd07af7e0..f53b386c182e83a7316ffb129b930614677bfbc9 100644
--- a/third_party/tcmalloc/chromium/src/heap-profile-table.h
+++ b/third_party/tcmalloc/chromium/src/heap-profile-table.h
@@ -39,6 +39,10 @@
 #include "base/basictypes.h"
 #include "base/logging.h"   // for RawFD
 
+#if defined(PROFILING_ALLOCATED_TYPE)
+#include <gperftools/allocated_type_map.h>
+#endif  // PROFILING_ALLOCATED_TYPE
+
 // Table to maintain a heap profile data inside,
 // i.e. the set of currently active heap memory allocations.
 // thread-unsafe and non-reentrant code:
@@ -238,6 +242,10 @@ class HeapProfileTable {
   // used for leak checking (using HeapLeakChecker).
   void DumpMarkedObjects(AllocationMark mark, const char* file_name);
 
+#if defined(PROFILING_ALLOCATED_TYPE)
+  void DumpAllocatedTypeStatistics(const char* file_name) const;
+#endif  // PROFILING_ALLOCATED_TYPE
+
  private:
   friend class DeepHeapProfile;
 
@@ -321,6 +329,16 @@ class HeapProfileTable {
     MarkArgs(AllocationMark m, bool a) : mark(m), mark_all(a) { }
   };
 
+#if defined(PROFILING_ALLOCATED_TYPE)
+  struct AllocatedTypeCount {
+    size_t bytes;
+    unsigned int objects;
+
+    AllocatedTypeCount(size_t a, unsigned int b)
+      : bytes(a), objects(b) { }

[jar (doing other things), 2012/08/20 21:59:09]

nit: indent 4 spaces to a ":" for initializer.

One initializer per line.

Use meaningful names, not single letters.

[Dai Mikurube (NOT FULLTIME), 2012/08/21 04:45:44]

Done.

+  };
+#endif  // PROFILING_ALLOCATED_TYPE
+
   // helpers ----------------------------
 
   // Unparse bucket b and print its portion of profile dump into buf.
@@ -383,6 +401,15 @@ class HeapProfileTable {
   inline static void ZeroBucketCountsIterator(
       const void* ptr, AllocValue* v, HeapProfileTable* heap_profile);
 
+#if defined(PROFILING_ALLOCATED_TYPE)
+  inline static void CountUpAllocatedTypeIterator(
+      const void* ptr, AllocValue* v,
+      AddressMap<AllocatedTypeCount>* type_size_map);
+
+  inline static void DumpAllocatedTypeIterator(
+      const void* ptr, AllocatedTypeCount* size, const DumpArgs& args);

[jar (doing other things), 2012/08/20 21:59:09]

nit: prefer one arg per line, and you can wrap at the paren.

[Dai Mikurube (NOT FULLTIME), 2012/08/21 04:45:44]

Done.

+#endif  // PROFILING_ALLOCATED_TYPE
+
   // Helper for IterateOrderedAllocContexts and FillOrderedProfile.
   // Creates a sorted list of Buckets whose length is num_alloc_buckets_ +
   // num_avaliable_mmap_buckets_.