Add histograms for total allocated/live heap size, as well as allocated size and percentage of tota…

src/v8-counters.cc

Index: src/v8-counters.cc
diff --git a/src/v8-counters.cc b/src/v8-counters.cc
index 36b45e2f8e8449d2a7d0636b88121ea924a4e697..3f83dffcae6fb7192056803171390d05cde9e36c 100644
--- a/src/v8-counters.cc
+++ b/src/v8-counters.cc
@@ -45,6 +45,12 @@ Counters::Counters() {
     HISTOGRAM_PERCENTAGE_LIST(HP)
 #undef HP
 
+#define HM(name, caption) \
+    Histogram name = { #caption, 1000, 500000, 50, NULL, false }; \
+    name##_ = name;
+    HISTOGRAM_MEMORY_LIST(HM)
+#undef HM
+
 #define SC(name, caption) \
     StatsCounter name = { "c:" #caption, NULL, false };\
     name##_ = name;
@@ -101,6 +107,10 @@ void Counters::ResetHistograms() {
 #define HP(name, caption) name##_.Reset();
     HISTOGRAM_PERCENTAGE_LIST(HP)
 #undef HP
+
+#define HM(name, caption) name##_.Reset();
+    HISTOGRAM_MEMORY_LIST(HM)
+#undef HM
 }
 
 } }  // namespace v8::internal