1 files changed, 228 insertions, 0 deletions
diff --git a/chromium/third_party/catapult/third_party/polymer2/bower_components/async/perf/benchmark.js b/chromium/third_party/catapult/third_party/polymer2/bower_components/async/perf/benchmark.js
new file mode 100755
index 00000000000..f75e05d475b
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+++ b/chromium/third_party/catapult/third_party/polymer2/bower_components/async/perf/benchmark.js
@@ -0,0 +1,228 @@
+#!/usr/bin/env node
+
+var _ = require("lodash");
+var Benchmark = require("benchmark");
+var exec = require("child_process").exec;
+var execSync = require("child_process").execSync;
+var fs = require("fs");
+var path = require("path");
+var mkdirp = require("mkdirp");
+var async = require("../");
+var suiteConfigs = require("./suites");
+var semver = require("semver");
+
+var args = require("yargs")
+    .usage("Usage: $0 [options] [tag1] [tag2]")
+    .describe("g", "run only benchmarks whose names match this regex")
+    .alias("g", "grep")
+    .default("g", ".*")
+    .describe("i", "skip benchmarks whose names match this regex")
+    .alias("i", "reject")
+    .default("i", "^$")
+    .describe("l", "maximum running time per test (in seconds)")
+    .alias("l", "limit")
+    .default("l", 2)
+    .help("h")
+    .alias("h", "help")
+    .example("$0 0.9.2 0.9.0", "Compare v0.9.2 with v0.9.0")
+    .example("$0 0.9.2", "Compare v0.9.2 with the current working version")
+    .example("$0", "Compare the latest tag with the current working version")
+    .example("$0 -g each", "only run the each(), eachLimit() and  " +
+        "eachSeries() benchmarks")
+    .example("")
+    .argv;
+
+var grep = new RegExp(args.g, "i");
+var reject = new RegExp(args.i, "i");
+
+function getLatestVersion() {
+    var tags = execSync("git tag");
+    var latest = _(tags).split("\n")
+        .compact()
+        .sort(semver.gt)
+        .last();
+    console.log("Latest tag is ", latest);
+    return latest;
+}
+
+var version0 = args._[0] || getLatestVersion();
+var version1 = args._[1] || "current";
+var versionNames = [version0, version1];
+var benchOptions = {defer: true, minSamples: 1, maxTime: +args.l};
+var versions;
+var wins = {};
+var totalTime = {};
+totalTime[version0] = wins[version0] = 0;
+totalTime[version1] = wins[version1] = 0;
+
+console.log("Comparing " + version0 + " with " + version1 +
+  " on Node " + process.version);
+console.log("--------------------------------------");
+
+
+async.eachSeries(versionNames, cloneVersion, function (err) {
+    if (err) { throw err; }
+    versions = versionNames.map(requireVersion);
+
+    var suites = suiteConfigs
+        .map(setDefaultOptions)
+        .reduce(handleMultipleArgs, [])
+        .map(setName)
+        .filter(matchesGrep)
+        .filter(doesNotMatch)
+        .map(createSuite);
+
+    async.eachSeries(suites, runSuite, function () {
+        var totalTime0 = +totalTime[version0].toPrecision(3);
+        var totalTime1 = +totalTime[version1].toPrecision(3);
+
+        var wins0 = wins[version0];
+        var wins1 = wins[version1];
+
+        if ( Math.abs((totalTime0 / totalTime1) - 1) < 0.01) {
+            // if < 1% difference, we're likely within the margins of error
+            console.log("Both versions are about equal " +
+                "(" + totalTime0 + "ms total vs. " + totalTime1  + "ms total)");
+        } else if (totalTime0 < totalTime1) {
+            console.log(version0 + " faster overall " +
+                "(" + totalTime0 + "ms total vs. " + totalTime1  + "ms total)");
+        } else if (totalTime1 < totalTime0) {
+            console.log(version1 + " faster overall " +
+                "(" + totalTime1 + "ms total vs. " + totalTime0  + "ms total)");
+        }
+
+        if (wins0 > wins1) {
+            console.log(version0 + " won more benchmarks " +
+                "(" + wins0 + " vs. " + wins1  + ")");
+        } else if (wins1 > wins0) {
+            console.log(version1 + " won more benchmarks " +
+                "(" + wins1 + " vs. " + wins0  + ")");
+        } else {
+            console.log("Both versions won the same number of benchmarks " +
+                "(" + wins0 + " vs. " + wins1  + ")");
+        }
+    });
+});
+
+function runSuite(suite, callback) {
+    suite.on("complete", function () {
+        callback();
+    }).run({async: true});
+}
+
+function setDefaultOptions(suiteConfig) {
+    suiteConfig.args = suiteConfig.args || [[]];
+    suiteConfig.setup = suiteConfig.setup || function () {};
+    return suiteConfig;
+}
+
+function handleMultipleArgs(list, suiteConfig) {
+    return list.concat(suiteConfig.args.map(function (args) {
+        return _.defaults({args: args}, suiteConfig);
+    }));
+}
+
+function setName(suiteConfig) {
+    suiteConfig.name = suiteConfig.name + "(" + suiteConfig.args.join(",") + ")";
+    return suiteConfig;
+}
+
+function matchesGrep(suiteConfig) {
+    return !!grep.exec(suiteConfig.name);
+}
+
+function doesNotMatch(suiteConfig) {
+    return !reject.exec(suiteConfig.name);
+}
+
+function createSuite(suiteConfig) {
+    var suite = new Benchmark.Suite();
+    var args = suiteConfig.args;
+    var errored = false;
+
+    function addBench(version, versionName) {
+        var name = suiteConfig.name + " " + versionName;
+
+        try {
+            suiteConfig.setup(1);
+            suiteConfig.fn(version, function () {});
+        } catch (e) {
+            console.error(name + " Errored");
+            errored = true;
+            return;
+        }
+
+        suite.add(name, function (deferred) {
+            suiteConfig.fn(version, function () {
+                deferred.resolve();
+            });
+        }, _.extend({
+            versionName: versionName,
+            setup: _.partial.apply(null, [suiteConfig.setup].concat(args)),
+            onError: function (err) {
+                console.log(err.stack);
+            }
+        }, benchOptions));
+    }
+
+    addBench(versions[0], versionNames[0]);
+    addBench(versions[1], versionNames[1]);
+
+
+    return suite.on('cycle', function(event) {
+        var mean = event.target.stats.mean * 1000;
+        console.log(event.target + ", " + mean.toPrecision(3) + "ms per run");
+        var version = event.target.options.versionName;
+        if (errored) return;
+        totalTime[version] += mean;
+    })
+    .on('error', function (err) { console.error(err); })
+    .on('complete', function() {
+        if (!errored) {
+            var fastest = this.filter('fastest');
+            if (fastest.length === 2) {
+                console.log("Tie");
+            } else {
+                var winner = fastest[0].options.versionName;
+                console.log(winner + ' is faster');
+                wins[winner]++;
+            }
+        }
+        console.log("--------------------------------------");
+    });
+
+}
+
+function requireVersion(tag) {
+    if (tag === "current") {
+        return async;
+    }
+
+    return require("./versions/" + tag + "/");
+}
+
+function cloneVersion(tag, callback) {
+    if (tag === "current") return callback();
+
+    var versionDir = __dirname + "/versions/" + tag;
+    mkdirp.sync(versionDir);
+    fs.open(versionDir + "/package.json", "r", function (err, handle) {
+        if (!err) {
+            // version has already been cloned
+            fs.close(handle);
+            return callback();
+        }
+
+        var repoPath = path.join(__dirname, "..");
+
+        var cmd = "git clone --branch " + tag + " " + repoPath + " " + versionDir;
+
+        exec(cmd, function (err) {
+            if (err) {
+                throw err;
+            }
+            callback();
+        });
+
+    });
+}