Class view: Retained size of all instances.

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 "platform/globals.h"
 
 #include "vm/compiler.h"
@@ skipping 1048 matching lines @@
     return true;
   }
   if (js->num_arguments() == 4) {
     type.PrintJSON(js, false);
     return true;
   }
   return HandleInstanceCommands(isolate, type, js, 4);
 }
 
 
+static bool HandleClassesRetained(Isolate* isolate, const Class& cls,
+                                  JSONStream* js) {
+  if (js->num_arguments() != 3) {
+    PrintError(js, "Command too long");
+    return true;
+  }
+  ObjectGraph graph(isolate);
+  intptr_t retained_size = graph.SizeRetainedByClass(cls.id());
+  const Object& result = Object::Handle(Integer::New(retained_size));
+  result.PrintJSON(js, true);
+  return true;
+}
+
+
 static bool HandleClasses(Isolate* isolate, JSONStream* js) {
   if (js->num_arguments() == 1) {
     ClassTable* table = isolate->class_table();
     JSONObject jsobj(js);
     table->PrintToJSONObject(&jsobj);
     return true;
   }
   ASSERT(js->num_arguments() >= 2);
   intptr_t id;
   if (!GetIntegerId(js->GetArgument(1), &id)) {
@@ skipping 18 matching lines @@
     } else if (strcmp(second, "fields") == 0) {
       return HandleClassesFields(isolate, cls, js);
     } else if (strcmp(second, "functions") == 0) {
       return HandleClassesFunctions(isolate, cls, js);
     } else if (strcmp(second, "implicit_closures") == 0) {
       return HandleClassesImplicitClosures(isolate, cls, js);
     } else if (strcmp(second, "dispatchers") == 0) {
       return HandleClassesDispatchers(isolate, cls, js);
     } else if (!strcmp(second, "types")) {
       return HandleClassesTypes(isolate, cls, js);
+    } else if (!strcmp(second, "retained")) {
+      return HandleClassesRetained(isolate, cls, js);
     } else {
       PrintError(js, "Invalid sub collection %s", second);
       return true;
     }
   }
   UNREACHABLE();
   return true;
 }
 
 
@@ skipping 852 matching lines @@
   while (current != NULL) {
     if (strcmp(name, current->name()) == 0) {
       return current;
     }
     current = current->next();
   }
   return NULL;
 }
 
 }  // namespace dart