Classify memory usage by allocated type in Deep Memory Profiler.

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

Index: third_party/tcmalloc/chromium/src/deep-heap-profile.h
diff --git a/third_party/tcmalloc/chromium/src/deep-heap-profile.h b/third_party/tcmalloc/chromium/src/deep-heap-profile.h
index 5a5ae8eb857efb9ebd1338f836a0294a8266bd41..be213b26c8f110ae35a04c79600041ebb01fc8d0 100644
--- a/third_party/tcmalloc/chromium/src/deep-heap-profile.h
+++ b/third_party/tcmalloc/chromium/src/deep-heap-profile.h
@@ -26,6 +26,10 @@
 
 #include "config.h"
 
+#if defined(PROFILING_ALLOCATED_TYPE)
+#include <typeinfo>
+#endif
+
 #if defined(__linux__)
 #define DEEP_HEAP_PROFILE 1
 #endif
@@ -87,6 +91,9 @@ class DeepHeapProfile {
 #ifdef DEEP_HEAP_PROFILE
   struct DeepBucket {
     Bucket*     bucket;
+#if defined(PROFILING_ALLOCATED_TYPE)
+    const std::type_info* type;

[M-A Ruel, 2012/08/19 02:40:00]

Note that type_info won't be useful on Windows since RTTI is disabled IIRC.

[Dai Mikurube (NOT FULLTIME), 2012/08/20 10:35:27]

I know.  PROFILING_ALLOCATED_TYPE is always used with RTTI enabled.  (See
http://codereview.chromium.org/10411047/)
In addition, this option is available only on Linux now.

+#endif
     size_t      committed_size;
     bool        is_mmap;
     int         id;         // Unique ID of the bucket.
@@ -208,7 +215,11 @@ class DeepHeapProfile {
 
   // Get the DeepBucket object corresponding to the given |bucket|.
   // DeepBucket is an extension to Bucket which is declared above.
-  DeepBucket* GetDeepBucket(Bucket* bucket, bool is_mmap, DeepBucket** table);
+  DeepBucket* GetDeepBucket(Bucket* bucket, bool is_mmap,
+#if defined(PROFILING_ALLOCATED_TYPE)
+      const std::type_info* type,
+#endif
+      DeepBucket** table);
 
   // Reset committed_size member variables in DeepBucket objects to 0.
   void ResetCommittedSize(DeepBucket** deep_table);