src/chrome/test/functional/tracing/tracer.js

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 window.pyautoRecordTrace = function(systemTracing) {
   6   'use strict';
   7   if( window.timelineModelShimId == undefined )
   8     window.timelineModelShimId = 0;
   9   if( window.timelineModelShims == undefined )
  10     window.timelineModelShims = {};
  11   var handler = function() {
  12     tracingController.removeEventListener('traceEnded', handler);
  13     var model = new TimelineModelShim(
  14       Array.prototype.slice.call(arguments, 1)
  15     );
  16     var events = [tracingController.traceEvents_];
  17     if (tracingController.supportsSystemTracing)
  18       events.push(tracingController.systemTraceEvents_);
  19     model.importTraces(events);
  20     var shimId = window.timelineModelShimId;
  21     window.timelineModelShims[shimId] = model;
  22     window.domAutomationController.send(shimId);
  23     window.timelineModelShimId++;
  24   };
  25   tracingController.addEventListener('traceEnded', handler);
  26   var willSystemTrace =
  27     tracingController.supportsSystemTracing ? systemTracing : false;
  28   tracingController.beginTracing(willSystemTrace);
  29   return willSystemTrace;
  30 };
  31
  32 // This causes the PyAuto ExecuteJavascript call which executed this file to
  33 // return.
  34 window.domAutomationController.send('');