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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name=viewport content="width=device-width, initial-scale=1">
<title>PerfMark Trace UI</title>
<base href="/">
</head>
<body>
<h1>PerfMark Trace Viewer</h1>
<p>
This is an example Trace Viewer, using the <a href="https://ui.perfetto.dev">Perfetto UI</a>.
</p>
<button id="thebutton">Load</button>
<br />
<textarea id="logs" cols="80" rows="24">
</textarea>
<script>
(function() {
let origin = "https://ui.perfetto.dev";
let logs = document.getElementById("logs");
let thebutton = document.getElementById("thebutton");
let thewindow = undefined;
thebutton.addEventListener("click", function (evt) {
logs.innerText += "Loading ...\n";
fetch("trace.json").then(function(result) {
result.blob().then(function(blob) {
blob.arrayBuffer().then(arrayBuffer => {
logs.innerText += "Trace JSON fetched.\n";
if (thewindow) {
thewindow.postMessage(arrayBuffer, origin);
return;
}
loadWindow(arrayBuffer);
});
});
});
});
function loadWindow(arrayBuffer) {
if (thewindow === undefined) {
thewindow = null;
} else {
return;
}
logs.innerText += "Loading Perfetto Window\n";
let win = window.open(origin);
let thetimer = null;
window.addEventListener("message", function(evt) {
if (evt.data !== "PONG") {
return;
}
window.clearInterval(thetimer);
logs.innerText += "Perfetto Window Ready\n";
thewindow = win;
thewindow.postMessage(arrayBuffer, origin);
});
thetimer = setInterval(function() {
win.postMessage("PING", origin);
}, 250);
}
})();
</script>
</body>
</html>
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