Add accumulator to allocation profiler

runtime/vm/service.cc

Index: runtime/vm/service.cc
diff --git a/runtime/vm/service.cc b/runtime/vm/service.cc
index 92955d3660df8cbd8ca6efa2107b320cadf178c2..d5dd577bf760c15d9675a9e5561d844720c2d1ef 100644
--- a/runtime/vm/service.cc
+++ b/runtime/vm/service.cc
@@ -1077,6 +1077,21 @@ static bool HandleCoverage(Isolate* isolate, JSONStream* js) {
 
 
 static bool HandleAllocationProfile(Isolate* isolate, JSONStream* js) {
+  if (js->num_arguments() == 2) {
+    const char* sub_command = js->GetArgument(1);
+    if (!strcmp(sub_command, "reset")) {
+      isolate->class_table()->ResetAllocationAccumulators();
+      isolate->class_table()->AllocationProfilePrintToJSONStream(js);
+      return true;
+    } else {
+      PrintError(js, "Unrecognized subcommand '%s'", sub_command);
+      return true;

[turnidge, 2014/02/27 18:29:13]

Add a heartbeat test.  I don't care if it is simple.

[Cutch, 2014/02/27 21:50:33]

Done.

+    }
+  }
+  if (js->num_arguments() != 1) {
+    PrintError(js, "Command too long");
+    return true;
+  }
   isolate->class_table()->AllocationProfilePrintToJSONStream(js);
   return true;
 }