Add accumulator to allocation profiler

runtime/vm/service.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/service.h"
 
 #include "include/dart_api.h"
 
 #include "vm/compiler.h"
 #include "vm/coverage.h"
@@ skipping 1059 matching lines @@
   return true;
 }
 
 static bool HandleCoverage(Isolate* isolate, JSONStream* js) {
   CodeCoverage::PrintToJSONStream(isolate, js);
   return true;
 }
 
 
 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;
 }
 
 
 static IsolateMessageHandlerEntry isolate_handlers[] = {
   { "_echo", HandleIsolateEcho },
   { "", HandleIsolate },
   { "allocationprofile", HandleAllocationProfile },
   { "classes", HandleClasses },
@@ skipping 218 matching lines @@
   while (current != NULL) {
     if (!strcmp(name, current->name())) {
       return current;
     }
     current = current->next();
   }
   return NULL;
 }
 
 }  // namespace dart