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      1 <!DOCTYPE html>
      2 <!--
      3 Copyright 2015 The Chromium Authors. All rights reserved.
      4 Use of this source code is governed by a BSD-style license that can be
      5 found in the LICENSE file.
      6 -->
      7 <link rel="import" href="/tracing/base/iteration_helpers.html">
      8 <link rel="import" href="/tracing/metrics/system_health/loading_metric.html">
      9 <link rel="import" href="/tracing/mre/function_handle.html">
     10 <link rel="import" href="/tracing/value/value_set.html">
     11 
     12 <script>
     13 'use strict';
     14 
     15 
     16 tr.exportTo('tr.mre', function() {
     17   function v8CallStatsDump(result, model) {
     18     var v8_runtime_map = {};
     19     var totalCount = 0;
     20     var totalTime = 0;
     21     var values = new tr.v.ValueSet();
     22 
     23     tr.metrics.sh.loadingMetric(values, model);
     24     var ttiEntries = values.valueDicts.filter(
     25         (dict) => dict.name === 'timeToFirstInteractive');
     26     var numeric = ttiEntries[0].numeric;
     27     if (numeric.running.count > 1) {
     28       throw 'Unable to work with a trace that has more than one navigation';
     29     }
     30 
     31     var binsWithSampleDiagnosticMaps = numeric.centralBins.filter(
     32         (bin) => bin.diagnosticMaps.length > 0);
     33     var diagnostic = binsWithSampleDiagnosticMaps[0]
     34         .diagnosticMaps[0]['breakdown'];
     35 
     36     var tti = diagnostic.value.interactive;
     37 
     38     for (var event of model.getDescendantEvents()) {
     39       if (!(event instanceof tr.model.ThreadSlice) || event.start > tti)
     40         continue;
     41       var v8_runtime = event.args['runtime-call-stats'];
     42 
     43       // For older traces, check if we had an arg called 'runtime-call-stat'
     44       // instead.
     45       if (v8_runtime === undefined)
     46         v8_runtime = event.args['runtime-call-stat'];
     47 
     48       if (v8_runtime !== undefined) {
     49         try {
     50           var v8_runtime_object = JSON.parse(v8_runtime);
     51           for (var runtime_call in v8_runtime_object) {
     52             // exclude "END" and malformed entries.
     53             if (v8_runtime_object[runtime_call].length == 2) {
     54               if (v8_runtime_map[runtime_call] === undefined) {
     55                 v8_runtime_map[runtime_call] = {count: 0, time: 0};
     56               }
     57               var runtime_count = v8_runtime_object[runtime_call][0];
     58               v8_runtime_map[runtime_call].count += runtime_count;
     59               var runtime_time = v8_runtime_object[runtime_call][1] / 1000;
     60               v8_runtime_map[runtime_call].time += runtime_time;
     61               totalCount += runtime_count;
     62               totalTime += runtime_time;
     63             }
     64           }
     65         } catch (e) {
     66            console.warn(e);
     67         }
     68       }
     69     }
     70     for (var i in v8_runtime_map) {
     71       result.addPair(i, {time: Number(v8_runtime_map[i].time).toFixed(2),
     72                          count: v8_runtime_map[i].count});
     73     }
     74     result.addPair('Total', {time: Number(totalTime).toFixed(2),
     75                              count: totalCount});
     76   }
     77 
     78   tr.mre.FunctionRegistry.register(v8CallStatsDump);
     79 
     80   // Exporting for tests.
     81   return {
     82     v8CallStatsDump: v8CallStatsDump
     83   };
     84 });
     85 
     86 </script>
     87