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<!DOCTYPE HTML>
<html>
<!--
Bug 1067491 - Test that frames keep the same index while we are recording.
-->
<head>
<meta charset="utf-8">
<title>Memory monitoring actor test</title>
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
</head>
<body>
<pre id="test">
<script src="memory-helpers.js" type="application/javascript"></script>
<script>
"use strict";
window.onload = function() {
SimpleTest.waitForExplicitFinish();
(async function() {
const { memory, target } = await startServerAndGetSelectedTabMemory();
await memory.attach();
await memory.startRecordingAllocations();
// Allocate twice with the exact same stack (hence setTimeout rather than
// allocating directly in the generator), but with getAllocations() calls in
// between.
const allocs = [];
function allocator() {
allocs.push({});
}
setTimeout(allocator, 1);
await waitForTime(2);
const first = await memory.getAllocations();
setTimeout(allocator, 1);
await waitForTime(2);
const second = await memory.getAllocations();
await memory.stopRecordingAllocations();
// Assert that each frame in the first response has the same index in the
// second response. This isn't commutative, so we don't check that all
// of the second response's frames are the same in the first response,
// because there might be new allocations that happen after the first query
// but before the second.
function assertSameFrame(a, b) {
info(" First frame = " + JSON.stringify(a, null, 4));
info(" Second frame = " + JSON.stringify(b, null, 4));
is(!!a, !!b);
if (!a || !b) {
return;
}
is(a.source, b.source);
is(a.line, b.line);
is(a.column, b.column);
is(a.functionDisplayName, b.functionDisplayName);
is(a.parent, b.parent);
}
for (let i = 0; i < first.frames.length; i++) {
info("Checking frames at index " + i + ":");
assertSameFrame(first.frames[i], second.frames[i]);
}
await memory.detach();
destroyServerAndFinish(target);
})();
};
</script>
</pre>
</body>
</html>
|
