Modified service to include current native zone memory consumption information in the VM object. Ad…

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 641 matching lines @@
 
   // The list of live isolates, ordered by isolate start time.
   final List<Isolate> isolates = <Isolate>[];
 
   String version = 'unknown';
   String hostCPU;
   String targetCPU;
   int architectureBits;
   bool assertsEnabled = false;
   bool typeChecksEnabled = false;
+  int nativeZoneMemoryUsage = 0;
   int pid = 0;
   int maxRSS = 0;
   bool profileVM = false;
   DateTime startTime;
   DateTime refreshTime;
   Duration get upTime {
     if (startTime == null) {
       return null;
     }
     return (new DateTime.now().difference(startTime));
@@ skipping 267 matching lines @@
     _upgradeCollection(map, vm);
 
     _loaded = true;
     version = map['version'];
     hostCPU = map['hostCPU'];
     targetCPU = map['targetCPU'];
     architectureBits = map['architectureBits'];
     int startTimeMillis = map['startTime'];
     startTime = new DateTime.fromMillisecondsSinceEpoch(startTimeMillis);
     refreshTime = new DateTime.now();
+    nativeZoneMemoryUsage = map['_nativeZoneMemoryUsage'];

[Cutch, 2017/01/31 17:15:23]

if (map['_...']) != null) {
  nativeZoneMemoryUsage = map['_...'];
}

[bkonyi, 2017/01/31 21:13:06]

Done, but why is this check not done for other fields in the VM object?

     pid = map['pid'];
     maxRSS = map['_maxRSS'];
     profileVM = map['_profilerMode'] == 'VM';
     assertsEnabled = map['_assertsEnabled'];
     typeChecksEnabled = map['_typeChecksEnabled'];
     _removeDeadIsolates(map['isolates']);
   }
 
   // Reload all isolates.
   Future reloadIsolates() {
@@ skipping 3558 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);
     }
   }
 }