Added support for "bin-ified" vmstats web app source files

runtime/bin/vmstats/vmstats.dart

Index: runtime/bin/vmstats/vmstats.dart
===================================================================
--- runtime/bin/vmstats/vmstats.dart	(revision 0)
+++ runtime/bin/vmstats/vmstats.dart	(revision 0)
@@ -0,0 +1,55 @@
+library vmstats;

[siva, 2013/03/05 23:12:44]

Copyright.

[Tom Ball, 2013/03/06 00:34:43]

Done.

+
+import 'dart:async';
+import 'dart:html';
+import 'dart:json' as JSON;
+
+part 'bargraph.dart';
+part 'isolate_list.dart';
+part 'models.dart';
+
+BarGraph _graph;
+IsolateList _isolateList;
+DivElement _statusText;
+IsolateListModel _isolates;
+Timer _updater;
+
+final int _POLL_INTERVAL = 1000;
+
+void main() {
+  DivElement dashBoard = query('#dashboard');
+  CanvasElement canvas = query('#graph');
+  var elements = [ new Element("Old Space", "#97FFFF"),
+                   new Element("New Space", "#00EE76")];
+  _graph = new BarGraph(canvas, elements);
+  UListElement isolateListElement = query('#isolateList');
+  _isolateList = new IsolateList(isolateListElement);
+  _statusText = query('#statusText');
+
+  _isolates = new IsolateListModel();
+  _isolates.addListener(onUpdateStatus, onRequestFailed);
+  _isolates.update();
+  _updater = new Timer.repeating(_POLL_INTERVAL, (timer) => _isolates.update());

[siva, 2013/03/05 23:12:44]

Ditto comment regarding types for local variables.

+}
+
+void onUpdateStatus(IsolateListModel model) {
+  int oldSpace = 0;
+  int newSpace = 0;
+  model.forEach((Isolate element) {
+    oldSpace += element.oldSpace.used;
+    newSpace += element.newSpace.used;
+  });
+  _graph.addSample([oldSpace, newSpace]);
+  _isolateList.updateList(model);
+  showStatus('Running ...');
+}
+
+void onRequestFailed() {
+  _updater.cancel();
+  _isolates.removeListener(onUpdateStatus);
+  showStatus('Server closed');
+}
+
+void showStatus(status) {
+  _statusText.text = status;
+}