| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src = "../resources/runner.js"></script> |
| <script> |
| |
| var startTime; |
| var isDone = false; |
| |
| function createAndRead(size) { |
| var reader = new FileReader(); |
| var blob = new Blob([new Uint8Array(size)], {type: 'application/octet-string'}); |
| reader.onloadend = function(e) { |
| if (reader.error) { |
| throw new Error('Error when reading blob: ' + reader.error); |
| } |
| if (reader.result.byteLength != size) |
| throw new Error("Sizes don't match"); |
| PerfTestRunner.measureValueAsync(PerfTestRunner.now() - startTime); |
| PerfTestRunner.addRunTestEndMarker(); |
| if (!isDone) |
| createAndRead(size); |
| } |
| PerfTestRunner.addRunTestStartMarker(); |
| startTime = PerfTestRunner.now(); |
| reader.readAsArrayBuffer(blob); |
| } |
| |
| function runTest() { |
| createAndRead(1024*1024); |
| } |
| |
| window.onload = function () { |
| PerfTestRunner.startMeasureValuesAsync({ |
| unit: 'ms', |
| done: function () { |
| isDone = true; |
| }, |
| run: function() { |
| runTest(); |
| }, |
| warmUpCount: 2, |
| iterationCount: 6, |
| description: "Measures performance of blob read.", |
| tracingCategories: 'Blob', |
| traceEventsToMeasure: ['BlobRequest', 'BlobRequest::ReadRawData', |
| 'BlobReader', 'BlobReader::ReadMore'] |
| }); |
| }; |
| </script> |
| </body> |
| </html> |
| |
