Track live instance and allocation counts for classes

runtime/vm/service.cc

Index: runtime/vm/service.cc
diff --git a/runtime/vm/service.cc b/runtime/vm/service.cc
index 35715e8613fc9391c8122a01920f1320ae0fe8ce..0e5c7f9c3a3d056741e032748aa8e4aeae096b55 100644
--- a/runtime/vm/service.cc
+++ b/runtime/vm/service.cc
@@ -1044,11 +1044,19 @@ static bool HandleProfile(Isolate* isolate, JSONStream* js) {
 }
 
 
+static bool HandleHeap(Isolate* isolate, JSONStream* js) {
+  isolate->class_table()->HeapPrintToJSONStream(js);
+  return true;
+}
+
+
 static IsolateMessageHandlerEntry isolate_handlers[] = {
   { "_echo", HandleIsolateEcho },
+  { "heap", HandleHeap },

[Ivan Posva, 2014/01/17 06:53:16]

Why twice?

Also "heap"/HandleHeap is a bit of a misnomer. Shouldn't it be allocation stats,
live stats or similar?

[Cutch, 2014/01/17 18:37:59]

Bad merge.
allocationprofile?

   { "classes", HandleClasses },
   { "code", HandleCode },
   { "debug", HandleDebug },
+  { "heap", HandleHeap },
   { "libraries", HandleLibraries },
   { "library", HandleLibrary },
   { "name", HandleName },