Observatory: Report peak process memory usage.

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 614 matching lines @@
   // The list of live isolates, ordered by isolate start time.
   final ObservableList<Isolate> isolates = new ObservableList<Isolate>();
 
   @observable String version = 'unknown';
   @observable String hostCPU;
   @observable String targetCPU;
   @observable int architectureBits;
   @observable bool assertsEnabled = false;
   @observable bool typeChecksEnabled = false;
   @observable int pid = 0;
+  @observable int maxRSS = 0;
   @observable bool profileVM = false;
   @observable DateTime startTime;
   @observable DateTime refreshTime;
   @observable Duration get upTime {
     if (startTime == null) {
       return null;
     }
     return (new DateTime.now().difference(startTime));
   }
 
@@ skipping 257 matching lines @@
     _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();
     notifyPropertyChange(#upTime, 0, 1);
     pid = map['pid'];
+    maxRSS = map['_maxRSS'];
     profileVM = map['_profilerMode'] == 'VM';
     assertsEnabled = map['_assertsEnabled'];
     typeChecksEnabled = map['_typeChecksEnabled'];
     _removeDeadIsolates(map['isolates']);
   }
 
   // Reload all isolates.
   Future reloadIsolates() {
     var reloads = [];
     for (var isolate in isolates) {
@@ skipping 3335 matching lines @@
     var v = list[i];
     if ((v is ObservableMap) && _isServiceMap(v)) {
       list[i] = owner.getFromMap(v);
     } else if (v is ObservableList) {
       _upgradeObservableList(v, owner);
     } else if (v is ObservableMap) {
       _upgradeObservableMap(v, owner);
     }
   }
 }