nheap.js revision 0529e5d033099cbfc42635f6f6183833b09dff6e 
1// Copyright 2014 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
5nheap = new (function() {
6
7this.COL_STACKTRACE = 3;
8this.COL_TOTAL = 0;
9
10this.nheapData_ = null;
11this.nheapTable_ = null;
12this.nheapFilter_ = null;
13
14this.onDomReady_ = function() {
15  // Create the mmaps table.
16  this.nheapTable_ = new google.visualization.Table($('#nheap-table')[0]);
17  google.visualization.events.addListener(
18      this.nheapTable_, 'select', this.onNheapTableRowSelect_.bind(this));
19  $('#nheap-filter').on('change', this.applyTableFilters_.bind(this));
20};
21
22this.dumpNheapFromStorage = function(archiveName, snapshot) {
23  webservice.ajaxRequest('/storage/' + archiveName + '/' + snapshot + '/nheap',
24                         this.onDumpAjaxResponse_.bind(this));
25  rootUi.showDialog('Loading native heap allocs from archive ...');
26  this.resetTableFilters_();
27};
28
29this.onDumpAjaxResponse_ = function(data) {
30  this.nheapData_ = new google.visualization.DataTable(data);  // TODO remove .table form mmap
31  this.nheapFilter_ = new google.visualization.DataView(this.nheapData_);
32  this.applyTableFilters_();
33  rootUi.hideDialog();
34};
35
36this.resetTableFilters_ = function() {
37  $('#nheap-filter').val('');
38}
39
40this.applyTableFilters_ = function() {
41  // Filters the rows according to the user-provided file and prot regexps.
42  if (!this.nheapFilter_)
43    return;
44
45  var rx = $('#nheap-filter').val();
46  var rows = [];
47  var total = 0;
48
49  for (var row = 0; row < this.nheapData_.getNumberOfRows(); ++row) {
50     stackTrace = this.nheapData_.getValue(row, this.COL_STACKTRACE);
51     if (!stackTrace.match(rx))
52      continue;
53    rows.push(row);
54    total += this.nheapData_.getValue(row, this.COL_TOTAL);
55  }
56
57  $('#nheap-totals').val(Math.floor(total / 1024) + ' KB');
58  this.nheapFilter_.setRows(rows);
59  this.redraw();
60};
61
62this.onNheapTableRowSelect_ = function() {
63  if (!this.nheapFilter_)
64    return;
65
66  var total = 0;
67
68  this.nheapTable_.getSelection().forEach(function(sel) {
69    var row = sel.row;
70    total += this.nheapFilter_.getValue(row, this.COL_TOTAL);
71  }, this);
72
73  $('#nheap-selected').val(Math.floor(total / 1024) + ' KB');
74};
75
76this.redraw = function() {
77  if (!this.nheapFilter_)
78    return;
79  this.nheapTable_.draw(this.nheapFilter_, {allowHtml: true,
80                                            page: 'enable',
81                                            pageSize: 25});
82};
83
84$(document).ready(this.onDomReady_.bind(this));
85
86})();