Changes to support dprof and Observatory profiler UIs

runtime/bin/vmservice/client/lib/src/observatory_elements/isolate_profile.dart

+// Copyright (c) 2013, 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.
+
+library isolate_profile_element;
+
+import 'dart:convert';
+import 'dart:html';
+import 'package:dprof/model.dart' as dprof;
+import 'package:polymer/polymer.dart';
+import 'observatory_element.dart';
+
+/// Displays an IsolateProfile
+@CustomTag('isolate-profile')
+class IsolateProfileElement extends ObservatoryElement {
+  IsolateProfileElement.created() : super.created();
+  @observable int methodCountSelected = 0;
+  final List methodCounts = [10, 20, 50];
+  @observable List topInclusiveCodes = toObservable([]);
+  @observable List topExclusiveCodes = toObservable([]);
+  @observable bool disassemble = false;
+  void _startRequest() {
+    // TODO(johnmccutchan): Indicate visually.
+    print('Request sent.');
+  }
+
+  void _endRequest() {
+    // TODO(johnmccutchan): Indicate visually.
+    print('Request finished.');
+  }
+
+  methodCountSelectedChanged(oldValue) {
+    print('Refresh top');
+    var isolateId = app.locationManager.currentIsolateId();
+    var isolate = app.isolateManager.getIsolate(isolateId);
+    if (isolate == null) {
+      print('No isolate found.');
+    }
+    _refreshTopMethods(isolate);
+  }
+
+  void toggleDisassemble(Event e, var detail, CheckboxInputElement target) {
+    disassemble = target.checked;
+    print(disassemble);
+  }
+
+  void refreshData(Event e, var detail, Node target) {
+    var isolateId = app.locationManager.currentIsolateId();
+    var isolate = app.isolateManager.getIsolate(isolateId);
+    if (isolate == null) {
+      print('No isolate found.');
+    }
+    var request = '/$isolateId/profile';
+    _startRequest();
+    app.requestManager.request(request).then((response) {
+      var profile;
+      try {
+        profile = JSON.decode(response);
+      } catch (e) { print(e); }
+      if ((profile is Map) && (profile['type'] == 'Profile')) {
+        var codes = profile['codes'];
+        var samples = profile['samples'];
+        _loadProfileData(isolate, samples, codes);
+      }
+      _endRequest();
+    }).catchError((e) {
+      _endRequest();
+    });
+  }
+
+  void _loadProfileData(Isolate isolate, int totalSamples, List codes) {
+    isolate.profiler = new dprof.Isolate(0, 0);
+    var loader = new dprof.Loader(isolate.profiler);
+    loader.load(totalSamples, codes);
+    _refreshTopMethods(isolate);
+  }
+
+  void _refreshTopMethods(Isolate isolate) {
+    topExclusiveCodes.clear();
+    topInclusiveCodes.clear();
+    if ((isolate == null) || (isolate.profiler == null)) {
+      return;
+    }
+    var count = methodCounts[methodCountSelected];
+    var topExclusive = isolate.profiler.topExclusive(count);
+    topExclusiveCodes.addAll(topExclusive);
+    var topInclusive = isolate.profiler.topInclusive(count);
+    topInclusiveCodes.addAll(topInclusive);
+
+  }
+
+  String codeTicks(dprof.Code code, bool inclusive) {
+    if (code == null) {
+      return '';
+    }
+    return inclusive ? '${code.inclusiveTicks}' : '${code.exclusiveTicks}';
+  }
+
+  String codePercent(dprof.Code code, bool inclusive) {
+    if (code == null) {
+      return '';
+    }
+    var isolateId = app.locationManager.currentIsolateId();
+    var isolate = app.isolateManager.getIsolate(isolateId);
+    if (isolate == null) {
+      return '';
+    }
+    var ticks = inclusive ? code.inclusiveTicks : code.exclusiveTicks;
+    var total = ticks / isolate.profiler.totalSamples;
+    return (total * 100.0).toStringAsFixed(2);
+  }
+
+  String codeName(dprof.Code code) {
+    if ((code == null) || (code.method == null)) {
+      return '';
+    }
+    return code.method.name;
+  }
+
+  String instructionTicks(dprof.Instruction instruction) {
+    if (instruction == null) {
+      return '';
+    }
+    if (instruction.ticks == 0) {
+      return '';
+    }
+    return '${instruction.ticks}';
+  }
+
+  String instructionPercent(dprof.Instruction instruction,
+                            dprof.Code code) {
+    if ((instruction == null) || (code == null)) {
+      return '';
+    }
+    if (instruction.ticks == 0) {
+      return '';
+    }
+    var ticks = instruction.ticks;
+    var total = ticks / code.inclusiveTicks;
+    return (total * 100.0).toStringAsFixed(2);
+  }
+
+  String instructionDisplay(dprof.Instruction instruction) {
+    if (instruction == null) {
+      return '';
+    }
+    return instruction.human;
+  }
+}