PerformanceTests/JetStream/SunSpiderSetup.js

// Copyright (C) 2014 Apple Inc. All rights reserved.
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function sunSpiderCPUWarmup()
{
    var warmupMS = 20;
    for (var start = new Date; new Date - start < warmupMS;) {
        for (var i = 0; i < 100; ++i) {
            if (Math.atan(Math.acos(Math.asin(Math.random()))) > 4) { // Always false.
                console.log("Whoa, dude!"); // Make it look like this has a purpose.
                return;
            }
        }
    }
}

for (var i = 0; i < SunSpiderPayload.length; ++i) {
    JetStream.addPlan({
        name: SunSpiderPayload[i].name,
        benchmarks: [{
            name: SunSpiderPayload[i].name,
            category: "Latency",
            unit: "ms/run",
        }],
        code:
            "<script>\n" +
            "top.sunSpiderCPUWarmup();\n" +
            "var __data = top.JetStream.getAccumulator() || {sum: 0, n: 0};\n" +
            "var __time_before = top.JetStream.goodTime();\n" +
            SunSpiderPayload[i].content +
            "var __time_after = top.JetStream.goodTime();\n" +
            "__data.sum += Math.max(__time_after - __time_before, 1);\n" +
            "__data.n++;\n" +
            "if (__data.n == 20)\n" +
            "    top.JetStream.reportResult(__data.sum / __data.n);\n" +
            "else\n" +
            "    top.JetStream.accumulate(__data);\n" +
            "</script>"
    });
}