Display isolate message queue in Observatory debugger

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;
 
 /// A [ServiceObject] represents a persistent object within the vm.
 abstract class ServiceObject extends Observable {
   static int LexicalSortName(ServiceObject o1, ServiceObject o2) {
     return o1.name.compareTo(o2.name);
@@ skipping 62 matching lines @@
   bool get isContext => type == 'Context';
   bool get isDouble => type == 'double';
   bool get isError => type == 'Error';
   bool get isInstance => _isInstanceType(type);
   bool get isInt => type == 'int';
   bool get isList => type == 'List';
   bool get isNull => type == 'null';
   bool get isSentinel => type == 'Sentinel';
   bool get isString => type == 'String';
 
+  // Is this an isolate message?

[turnidge, 2015/05/04 17:47:12]

Not sure that this comment adds, given that none of its peers are commented.

[Cutch, 2015/05/04 19:56:51]

Done.

+  bool get isIsolateMessage => type == 'IsolateMessage';
+
   // Kinds of Instance.
   bool get isMirrorReference => vmType == 'MirrorReference';
   bool get isWeakProperty => vmType == 'WeakProperty';
   bool get isClosure => false;
   bool get isPlainInstance {
     return (type == 'Instance' &&
             !isMirrorReference && !isWeakProperty && !isClosure);
   }
 
   /// Has this object been fully loaded?
@@ skipping 2109 matching lines @@
   void _update(ObservableMap map, bool mapIsRef) {
     _upgradeCollection(map, isolate);
     kind = map['kind'];
     _url = map['name'];
     _shortUrl = _url.substring(_url.lastIndexOf('/') + 1);
     name = _shortUrl;
     vmName = _url;
     if (mapIsRef) {
       return;
     }
+    _loaded = true;
     lineOffset = map['lineOffset'];
     columnOffset = map['columnOffset'];
     _parseTokenPosTable(map['tokenPosTable']);
     _processSource(map['source']);
     library = map['library'];
   }
 
   void _parseTokenPosTable(List<List<int>> table) {
     if (table == null) {
       return;
@@ skipping 53 matching lines @@
     }
 
     mergedCallSites.addAll(callSites);
     callSites = mergedCallSites;
     _applyHitsToLines();
     // Notify any Observers that this Script's state has changed.
     notifyChange(null);
   }
 
   void _processSource(String source) {
-    // Preemptyively mark that this is not loaded.
-    _loaded = false;
     if (source == null) {
       return;
     }
     var sourceLines = source.split('\n');
     if (sourceLines.length == 0) {
       return;
     }
-    // We have the source to the script. This is now loaded.
-    _loaded = true;
     lines.clear();
     Logger.root.info('Adding ${sourceLines.length} source lines for ${_url}');
     for (var i = 0; i < sourceLines.length; i++) {
       lines.add(new ScriptLine(this, i + lineOffset + 1, sourceLines[i]));
     }
     for (var bpt in isolate.breakpoints.values) {
       if (bpt.script == this) {
         _addBreakpoint(bpt);
       }
     }
@@ skipping 691 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);
     }
   }
 }