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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
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devtools/server/tests/mochitest/test_memory_allocations_03.html Normal file
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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 type="application/javascript" 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;version=1.8"></script>
<script>
window.onload = function() {
SimpleTest.waitForExplicitFinish();
Task.spawn(function* () {
var { memory, client } = yield startServerAndGetSelectedTabMemory();
yield memory.attach();
yield memory.startRecordingAllocations();
// Allocate twice with the exact same stack (hence setTimeout rather than
// allocating directly in the generator), but with getAllocations() calls in
// between.
var allocs = [];
function allocator() {
allocs.push({});
}
setTimeout(allocator, 1);
yield waitForTime(2);
var first = yield memory.getAllocations();
setTimeout(allocator, 1);
yield waitForTime(2);
var second = yield memory.getAllocations();
yield 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("Checking frames at index " + i + ":");
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 (var i = 0; i < first.frames.length; i++) {
assertSameFrame(first.frames[i], second.frames[i]);
}
yield memory.detach();
destroyServerAndFinish(client);
});
};
</script>
</pre>
</body>
</html>