third_party/WebKit/LayoutTests/fast/workers/worker-shared-asm-buffer.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <script>
   5 function log(message)
   6 {
   7     document.getElementById('console').appendChild(document.createTextNode(message + "\n"));
   8 }
   9
  10 function runTest()
  11 {
  12     log("Test calling asm functions across workers with the same heap.");
  13     var string = [
  14         "worker = this;",
  15         "onmessage = function(e) {",
  16         "    function Module(stdlib, foreign, heap) {",
  17         "        'use asm';",
  18         "        var MEM32 = new stdlib.Int32Array(heap);",
  19         "        function load() { var res = MEM32[255]; MEM32[255] = 123457; return res; }",
  20         "        return { load: load };",
  21         "    }",
  22         "    var buffer = e.data;",
  23         "    var result = Module(worker, {}, buffer).load();",
  24         "    var message = result == 123456 ? 'SUCCESS' : 'FAILURE ' + result;",
  25         "    postMessage(message);",
  26         "};"
  27     ].join('\n');
  28     var blobURL = URL.createObjectURL(new Blob([string]));
  29     var worker = new Worker(blobURL);
  30     function Module(stdlib, foreign, heap) {
  31         'use asm';
  32         var MEM32 = new stdlib.Int32Array(heap);
  33         function store() { MEM32[255] = 123456; }
  34         return { store: store };
  35     }
  36     var buffer = new ArrayBuffer(4 * 256);
  37     Module(this, {}, buffer).store();
  38     worker.onmessage = function(event) {
  39         try {
  40             // This buffer may or may not have been neutered, ensure we don't write across threads.
  41             for (var i = 0; i < 4 * 256; i++) {
  42                 buffer[i] = 0;
  43             }
  44         } catch(e) {}
  45         log(event.data);
  46         log("DONE");
  47         if (testRunner.notifyDone)
  48             testRunner.notifyDone();
  49     };
  50     worker.postMessage(buffer);
  51 }
  52
  53 if (window.testRunner) {
  54     testRunner.setAllowUniversalAccessFromFileURLs(false);
  55     testRunner.setAllowFileAccessFromFileURLs(true);
  56     testRunner.dumpAsText();
  57     testRunner.waitUntilDone();
  58 }
  59 </script>
  60 </head>
  61 <body onload="runTest()">
  62 <pre id='console'></pre>
  63 </body>
  64 </html>