mirror of
https://github.com/servo/servo.git
synced 2025-07-23 23:33:43 +01:00
25 lines
1.1 KiB
HTML
25 lines
1.1 KiB
HTML
<!DOCTYPE HTML>
|
|
<meta charset=utf-8>
|
|
<meta name="viewport" content="width=device-width">
|
|
<title>Child Iframe</title>
|
|
<h1>Child Iframe observing long tasks</h1>
|
|
|
|
<script>
|
|
const observer = new PerformanceObserver(function(entryList) {
|
|
for (i = 0; i < entryList.getEntries().length; i++) {
|
|
const longtask = entryList.getEntries()[i];
|
|
// Ignore long task generated within here, as part of making this iframe.
|
|
// Ignore multiple-contexts and unknown because they cause longtask-in-parentiframe test to be flaky.
|
|
if (longtask.name == 'self' ||
|
|
longtask.name == 'multiple-contexts' || longtask.name == 'unknown')
|
|
return;
|
|
// TODO(panicker): include containerType.
|
|
const attribution = longtask.attribution[0];
|
|
const entryContents = longtask.entryType + '+' + longtask.name + '+' +
|
|
attribution.name + '+' + attribution.containerId + '+' +
|
|
attribution.containerName + '+' + attribution.containerSrc;
|
|
top.postMessage(entryContents, '*');
|
|
}
|
|
});
|
|
observer.observe({entryTypes: ['longtask']});
|
|
</script>
|