Observatory:

runtime/observatory/lib/src/service/object.dart

 // Copyright (c) 2014, 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.
 
 part of service;
 
 // Some value smaller than the object ring, so requesting a large array
 // doesn't result in an expired ref because the elements lapped it in the
 // object ring.
 const int kDefaultFieldLimit = 100;
@@ skipping 1362 matching lines @@
       return result;
     });
   }
 
   void _handleIsolateReloadEvent(ServiceEvent event) {
     if (event.reloadError == null) {
       _cache.clear();
     }
   }
 
+  Future collectAllGarbage() {
+    return invokeRpc('_collectAllGarbage', {});
+  }
+
   /// Fetches and builds the class hierarchy for this isolate. Returns the
   /// Object class object.
   Future<Class> getClassHierarchy() {
     return invokeRpc('getClassList', {})
         .then(_loadClasses)
         .then(_buildClassHierarchy);
   }
 
   Future<ServiceObject> getPorts() {
     return invokeRpc('_getPorts', {});
@@ skipping 3251 matching lines @@
     var v = list[i];
     if ((v is Map) && _isServiceMap(v)) {
       list[i] = owner.getFromMap(v);
     } else if (v is List) {
       _upgradeList(v, owner);
     } else if (v is Map) {
       _upgradeMap(v, owner);
     }
   }
 }