Add counters that automatically track object sizes and counts.

src/v8-counters.cc

Index: src/v8-counters.cc
diff --git a/src/v8-counters.cc b/src/v8-counters.cc
index c6aa9cb7f8a3ed8bce78dd03628f9af25c353c70..5372610621a936d320ae5ac066def347c3323a22 100644
--- a/src/v8-counters.cc
+++ b/src/v8-counters.cc
@@ -1,4 +1,4 @@
-// Copyright 2007-2008 the V8 project authors. All rights reserved.
+// Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -47,6 +47,14 @@ Counters::Counters() {
     STATS_COUNTER_LIST_2(SC)
 #undef SC
 
+#define SC(name) \
+    StatsCounter count_of_##name = { "c:" "V8.CountOf_" #name, NULL, false };\
+    count_of_##name##_ = count_of_##name; \
+    StatsCounter size_of_##name = { "c:" "V8.SizeOf_" #name, NULL, false };\
+    size_of_##name##_ = size_of_##name;
+    INSTANCE_TYPE_LIST(SC)
+#undef SC
+
   StatsCounter state_counters[] = {
 #define COUNTER_NAME(name) \
     { "c:V8.State" #name, NULL, false },