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