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_STACKTRACE = 3;
   8 this.COL_TOTAL = 0;
   9
  10 this.nheapData_ = null;
  11 this.nheapTable_ = null;
  12 this.nheapFilter_ = null;
  13
  14 this.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
  22 this.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
  29 this.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
  36 this.resetTableFilters_ = function() {
  37   $('#nheap-filter').val('');
  38 }
  39
  40 this.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
  62 this.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
  76 this.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 })();