forked from mirrors/gecko-dev
7b53fcdbb6
MozReview-Commit-ID: BFaOv5i5Tun --HG-- extra : rebase_source : 5c2b5d1867eb5b48c56725b87d71dae72a83eb34
62 lines
1.8 KiB
HTML
62 lines
1.8 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<!--
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Bug 1068171 - Test controlling the memory actor's allocation sampling probability.
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-->
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<head>
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<meta charset="utf-8">
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<title>Memory monitoring actor test</title>
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<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
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</head>
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<body>
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<pre id="test">
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<script src="memory-helpers.js" type="application/javascript"></script>
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<script>
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"use strict";
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window.onload = function () {
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SimpleTest.waitForExplicitFinish();
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Task.spawn(function* () {
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let { memory, client } = yield startServerAndGetSelectedTabMemory();
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yield memory.attach();
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let allocs = [];
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function allocator() {
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for (let i = 0; i < 100; i++) {
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allocs.push({});
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}
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}
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let testProbability = Task.async(function* (p, expected) {
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info("probability = " + p);
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yield memory.startRecordingAllocations({
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probability: p
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});
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allocator();
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let response = yield memory.getAllocations();
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yield memory.stopRecordingAllocations();
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return response.allocations.length;
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});
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is((yield testProbability(0.0)), 0,
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"With probability = 0.0, we shouldn't get any allocations.");
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ok((yield testProbability(1.0)) >= 100,
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"With probability = 1.0, we should get all 100 allocations (plus "
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+ "whatever allocations the actor and SpiderMonkey make).");
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// We don't test any other probabilities because the test would be
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// non-deterministic. We don't have a way to control the PRNG like we do in
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// jit-tests
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// (js/src/jit-test/tests/debug/Memory-allocationsSamplingProbability-*.js).
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yield memory.detach();
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destroyServerAndFinish(client);
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});
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};
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</script>
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</pre>
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</body>
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</html>
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