1 files changed, 162 insertions, 0 deletions
diff --git a/intl/benchmarks/perftest_locale.js b/intl/benchmarks/perftest_locale.js
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+++ b/intl/benchmarks/perftest_locale.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+// @ts-check
+
+var perfMetadata = {
+  owner: "Internationalization Team",
+  name: "Intl.Locale",
+  description: "Test the speed of the Intl.Locale implementation.",
+  options: {
+    default: {
+      perfherder: true,
+      perfherder_metrics: [
+        {
+          name: "Intl.Locale constructor iterations",
+          unit: "iterations",
+        },
+        { name: "Intl.Locale constructor accumulatedTime", unit: "ms" },
+        { name: "Intl.Locale constructor perCallTime", unit: "ms" },
+
+        {
+          name: "Intl.Locale.prototype accessors iterations",
+          unit: "iterations",
+        },
+        {
+          name: "Intl.Locale.prototype accessors accumulatedTime",
+          unit: "ms",
+        },
+        {
+          name: "Intl.Locale.prototype accessors perCallTime",
+          unit: "ms",
+        },
+
+        {
+          name: "Intl.Locale.maximize operation iterations",
+          unit: "iterations",
+        },
+        {
+          name: "Intl.Locale.maximize operation accumulatedTime",
+          unit: "ms",
+        },
+        {
+          name: "Intl.Locale.maximize operation perCallTime",
+          unit: "ms",
+        },
+      ],
+      verbose: true,
+    },
+  },
+  tags: ["intl", "ecma402"],
+};
+
+const maximizeLocales = [
+  "en-US",
+  "en-GB",
+  "es-AR",
+  "it",
+  "zh-Hans-CN",
+  "de-AT",
+  "pl",
+  "fr-FR",
+  "de-AT",
+  "sr-Cyrl-SR",
+  "nb-NO",
+  "fr-FR",
+  "mk",
+  "uk",
+  "und-PL",
+  "und-Latn-AM",
+  "ug-Cyrl",
+  "sr-ME",
+  "mn-Mong",
+  "lif-Limb",
+  "gan",
+  "zh-Hant",
+  "yue-Hans",
+  "unr",
+  "unr-Deva",
+  "und-Thai-CN",
+  "ug-Cyrl",
+  "en-Latn-DE",
+  "pl-FR",
+  "de-CH",
+  "tuq",
+  "sr-ME",
+  "ng",
+  "klx",
+  "kk-Arab",
+  "en-Cyrl",
+  "und-Cyrl-UK",
+  "und-Arab",
+  "und-Arab-FO",
+];
+
+add_task(function measure_locale() {
+  const measureConstructor = measureIterations("Intl.Locale constructor");
+  const measureAccessors = measureIterations("Intl.Locale.prototype accessors");
+  const measureMaximize = measureIterations("Intl.Locale.maximize operation");
+
+  // Split each step of the benchmark into separate JS functions so that performance
+  // profiles are easy to analyze.
+
+  function benchmarkDateTimeFormatConstructor() {
+    for (let i = 0; i < 1000; i++) {
+      // Create a random configuration powered by a pseudo-random number generator. This
+      // way the configurations will be the same between 2 different runs.
+      const localeString = pickRepresentativeLocale();
+
+      // Measure the constructor.
+      measureConstructor.start();
+      const locale = new Intl.Locale(localeString);
+      measureConstructor.stop();
+
+      benchmarkAccessors(locale);
+    }
+  }
+
+  const accessors = [
+    "basename",
+    "calendar",
+    "caseFirst",
+    "collation",
+    "hourCycle",
+    "numeric",
+    "numberingSystem",
+    "language",
+    "script",
+    "region",
+  ];
+
+  function benchmarkAccessors(locale) {
+    for (let j = 0; j < 100; j++) {
+      measureAccessors.start();
+      for (let accessor in accessors) {
+        locale[accessor];
+      }
+      measureAccessors.stop();
+    }
+  }
+
+  function benchmarkMaximize() {
+    let locales = [];
+    for (let localeString of maximizeLocales) {
+      locales.push(new Intl.Locale(localeString));
+    }
+    for (let j = 0; j < 10000; j++) {
+      measureMaximize.start();
+      for (let locale of locales) {
+        locale.maximize();
+      }
+      measureMaximize.stop();
+    }
+  }
+
+  benchmarkDateTimeFormatConstructor();
+  benchmarkMaximize();
+  measureConstructor.reportMetrics();
+  measureAccessors.reportMetrics();
+  measureMaximize.reportMetrics();
+
+  ok(true);
+});