src/tools/memory_inspector/memory_inspector/frontends/www_content/js/nheap.js

   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
   5 nheap = new (function() {
   6
   7 this.COL_TOTAL = 0;
   8 this.COL_RESIDENT = 1;
   9 this.COL_STACKTRACE = 3;
  10
  11
  12 this.nheapData_ = null;
  13 this.nheapTable_ = null;
  14 this.nheapFilter_ = null;
  15
  16 this.onDomReady_ = function() {
  17   // Create the mmaps table.
  18   this.nheapTable_ = new google.visualization.Table($('#nheap-table')[0]);
  19   google.visualization.events.addListener(
  20       this.nheapTable_, 'select', this.onNheapTableRowSelect_.bind(this));
  21   $('#nheap-filter').on('change', this.applyTableFilters_.bind(this));
  22 };
  23
  24 this.dumpNheapFromStorage = function(archiveName, snapshot) {
  25   webservice.ajaxRequest('/storage/' + archiveName + '/' + snapshot + '/nheap',
  26                          this.onDumpAjaxResponse_.bind(this));
  27   rootUi.showDialog('Loading native heap allocs from archive ...');
  28   this.resetTableFilters_();
  29 };
  30
  31 this.onDumpAjaxResponse_ = function(data) {
  32   this.nheapData_ = new google.visualization.DataTable(data);  // TODO remove .table form mmap
  33   this.nheapFilter_ = new google.visualization.DataView(this.nheapData_);
  34   this.applyTableFilters_();
  35   rootUi.hideDialog();
  36 };
  37
  38 this.resetTableFilters_ = function() {
  39   $('#nheap-filter').val('');
  40 }
  41
  42 this.applyTableFilters_ = function() {
  43   // Filters the rows according to the user-provided file and prot regexps.
  44   if (!this.nheapFilter_)
  45     return;
  46
  47   var rx = $('#nheap-filter').val();
  48   var rows = [];
  49   var total_allocated = 0;
  50   var total_resident = 0;
  51
  52   for (var row = 0; row < this.nheapData_.getNumberOfRows(); ++row) {
  53      stackTrace = this.nheapData_.getValue(row, this.COL_STACKTRACE);
  54      if (!stackTrace.match(rx))
  55       continue;
  56     rows.push(row);
  57     total_allocated += this.nheapData_.getValue(row, this.COL_TOTAL);
  58     total_resident += this.nheapData_.getValue(row, this.COL_RESIDENT);
  59   }
  60
  61   $('#nheap-total-allocated').val(Math.floor(total_allocated / 1024) + ' KB');
  62   $('#nheap-total-resident').val(Math.floor(total_resident / 1024) + ' KB');
  63   this.nheapFilter_.setRows(rows);
  64   this.redraw();
  65 };
  66
  67 this.onNheapTableRowSelect_ = function() {
  68   if (!this.nheapFilter_)
  69     return;
  70
  71   var total_allocated = 0;
  72   var total_resident = 0;
  73
  74   this.nheapTable_.getSelection().forEach(function(sel) {
  75     var row = sel.row;
  76     total_allocated += this.nheapFilter_.getValue(row, this.COL_TOTAL);
  77     total_resident += this.nheapFilter_.getValue(row, this.COL_RESIDENT);
  78   }, this);
  79
  80   $('#nheap-selected-allocated').val(Math.floor(total_allocated / 1024) +
  81                                      ' KB');
  82   $('#nheap-selected-resident').val(Math.floor(total_resident / 1024) + ' KB');
  83 };
  84
  85 this.redraw = function() {
  86   if (!this.nheapFilter_)
  87     return;
  88   this.nheapTable_.draw(this.nheapFilter_, {allowHtml: true,
  89                                             page: 'enable',
  90                                             pageSize: 25});
  91 };
  92
  93 $(document).ready(this.onDomReady_.bind(this));
  94
  95 })();