src/third_party/WebKit/PerformanceTests/Parser/html-parser-threaded.html

   1 <!DOCTYPE html>
   2 <body>
   3 <script src="../resources/runner.js"></script>
   4 <script>
   5 // Use the threaded parser if available:
   6 if (window.internals && window.internals.settings.setThreadedHTMLParser)
   7     window.internals.settings.setThreadedHTMLParser(true);
   8
   9 var specURL = "resources/html5.html";
  10
  11 var iframe = document.createElement("iframe");
  12 iframe.style.display = "none";  // Prevent creation of the rendering tree, so we only test HTML parsing.
  13 iframe.sandbox = '';  // Prevent external script loads which could cause write() to return before completing the parse.
  14 document.body.appendChild(iframe);
  15
  16 PerfTestRunner.prepareToMeasureValuesAsync({
  17     description: "Measures performance of the threaded HTML parser (if available).",
  18     done: onCompletedRun,
  19     unit: 'ms'
  20 });
  21
  22 iframe.onload = function() {
  23     var now = PerfTestRunner.now();
  24     PerfTestRunner.measureValueAsync(now - then);
  25     then = now;
  26     iframe.src = specURL;
  27 }
  28 var then = PerfTestRunner.now();
  29 iframe.src = specURL;
  30
  31 function onCompletedRun() {
  32     iframe.onload = null;
  33     // FIXME: This should probably remove the iframe, but that currently
  34     // causes the threaded-parser to never send the load event for the main page.
  35     // document.body.removeChild(iframe);
  36 }
  37 </script>
  38 </body>