benchmark: pre-generate data set for URL benchmarks

This patch:

- Introduces `common.bakeUrlData` which can be used to pre-generate
  the data set for the URL benchmarks to loop through instead of
  looping over a constant.
- Add the option to use WPT data in benchmarks for better diversity
  in the input
- Add the option to benchmark URL parsing with base URLs (whatwg only)
- Moves the data in `benchmark/fixtures/url-inputs.js` to
  `benchmark/common.js`

PR-URL: #24302
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: joyeecheung

benchmark/common.js

@@ -254,3 +254,95 @@ exports.binding = function(bindingName) {
     return process.binding(bindingName);
   }
 };
+
+const urls = {
+  long: 'http://nodejs.org:89/docs/latest/api/foo/bar/qua/13949281/0f28b/' +
+        '/5d49/b3020/url.html#test?payload1=true&payload2=false&test=1' +
+        '&benchmark=3&foo=38.38.011.293&bar=1234834910480&test=19299&3992&' +
+        'key=f5c65e1e98fe07e648249ad41e1cfdb0',
+  short: 'https://nodejs.org/en/blog/',
+  idn: 'http://你好你好.在线',
+  auth: 'https://user:pass@example.com/path?search=1',
+  file: 'file:///foo/bar/test/node.js',
+  ws: 'ws://localhost:9229/f46db715-70df-43ad-a359-7f9949f39868',
+  javascript: 'javascript:alert("node is awesome");',
+  percent: 'https://%E4%BD%A0/foo',
+  dot: 'https://example.org/./a/../b/./c'
+};
+exports.urls = urls;
+
+const searchParams = {
+  noencode: 'foo=bar&baz=quux&xyzzy=thud',
+  multicharsep: 'foo=bar&&&&&&&&&&baz=quux&&&&&&&&&&xyzzy=thud',
+  encodefake: 'foo=%©ar&baz=%A©uux&xyzzy=%©ud',
+  encodemany: '%66%6F%6F=bar&%62%61%7A=quux&xyzzy=%74h%75d',
+  encodelast: 'foo=bar&baz=quux&xyzzy=thu%64',
+  multivalue: 'foo=bar&foo=baz&foo=quux&quuy=quuz',
+  multivaluemany: 'foo=bar&foo=baz&foo=quux&quuy=quuz&foo=abc&foo=def&' +
+                  'foo=ghi&foo=jkl&foo=mno&foo=pqr&foo=stu&foo=vwxyz',
+  manypairs: 'a&b&c&d&e&f&g&h&i&j&k&l&m&n&o&p&q&r&s&t&u&v&w&x&y&z',
+  manyblankpairs: '&&&&&&&&&&&&&&&&&&&&&&&&',
+  altspaces: 'foo+bar=baz+quux&xyzzy+thud=quuy+quuz&abc=def+ghi'
+};
+exports.searchParams = searchParams;
+
+function getUrlData(withBase) {
+  const data = require('../test/fixtures/wpt/url/resources/urltestdata.json');
+  const result = [];
+  for (const item of data) {
+    if (item.failure || !item.input) continue;
+    if (withBase) {
+      result.push([item.input, item.base]);
+    } else if (item.base !== 'about:blank') {
+      result.push(item.base);
+    }
+  }
+  return result;
+}
+
+exports.urlDataTypes = Object.keys(urls).concat(['wpt']);
+
+/**
+ * Generate an array of data for URL benchmarks to use.
+ * The size of the resulting data set is the original data size * 2 ** `e`.
+ * The 'wpt' type contains about 400 data points when `withBase` is true,
+ * and 200 data points when `withBase` is false.
+ * Other types contain 200 data points with or without base.
+ *
+ * @param {string} type Type of the data, 'wpt' or a key of `urls`
+ * @param {number} e The repetition of the data, as exponent of 2
+ * @param {boolean} withBase Whether to include a base URL
+ * @param {boolean} asUrl Whether to return the results as URL objects
+ * @return {string[] | string[][] | URL[]}
+ */
+function bakeUrlData(type, e = 0, withBase = false, asUrl = false) {
+  let result = [];
+  if (type === 'wpt') {
+    result = getUrlData(withBase);
+  } else if (urls[type]) {
+    const input = urls[type];
+    const item = withBase ? [input, 'about:blank'] : input;
+    // Roughly the size of WPT URL test data
+    result = new Array(200).fill(item);
+  } else {
+    throw new Error(`Unknown url data type ${type}`);
+  }
+
+  if (typeof e !== 'number') {
+    throw new Error(`e must be a number, received ${e}`);
+  }
+
+  for (let i = 0; i < e; ++i) {
+    result = result.concat(result);
+  }
+
+  if (asUrl) {
+    if (withBase) {
+      result = result.map(([input, base]) => new URL(input, base));
+    } else {
+      result = result.map((input) => new URL(input));
+    }
+  }
+  return result;
+}
+exports.bakeUrlData = bakeUrlData;

benchmark/fixtures/url-inputs.js

@@ -1,7 +1,7 @@
 'use strict';
 const common = require('../common.js');
 const querystring = require('querystring');
-const inputs = require('../fixtures/url-inputs.js').searchParams;
+const inputs = common.searchParams;
 
 const bench = common.createBenchmark(main, {
   type: Object.keys(inputs),

benchmark/querystring/querystring-parse.js

@@ -3,20 +3,15 @@ const common = require('../common.js');
 const url = require('url');
 const URL = url.URL;
 const assert = require('assert');
-const inputs = require('../fixtures/url-inputs.js').urls;
 
 const bench = common.createBenchmark(main, {
-  type: Object.keys(inputs),
+  type: common.urlDataTypes,
   method: ['legacy', 'whatwg'],
-  n: [1e5]
+  e: [1]
 });
 
-// At the time of writing, when using a passed property name to index
-// the object, Crankshaft would generate a LoadKeyedGeneric even when it
-// remains a constant in the function, so here we must use the literal
-// instead to get a LoadNamedField.
-function useLegacy(n, input) {
-  const obj = url.parse(input);
+function useLegacy(data) {
+  const obj = url.parse(data[0]);
   const noDead = {
     protocol: obj.protocol,
     auth: obj.auth,
@@ -27,10 +22,12 @@ function useLegacy(n, input) {
     search: obj.search,
     hash: obj.hash
   };
+  const len = data.length;
   // It's necessary to assign the values to an object
   // to avoid loop invariant code motion.
   bench.start();
-  for (var i = 0; i < n; i += 1) {
+  for (var i = 0; i < len; i++) {
+    const obj = data[i];
     noDead.protocol = obj.protocol;
     noDead.auth = obj.auth;
     noDead.host = obj.host;
@@ -40,12 +37,12 @@ function useLegacy(n, input) {
     noDead.search = obj.search;
     noDead.hash = obj.hash;
   }
-  bench.end(n);
+  bench.end(len);
   return noDead;
 }
 
-function useWHATWG(n, input) {
-  const obj = new URL(input);
+function useWHATWG(data) {
+  const obj = new URL(data[0]);
   const noDead = {
     protocol: obj.protocol,
     auth: `${obj.username}:${obj.password}`,
@@ -56,8 +53,10 @@ function useWHATWG(n, input) {
     search: obj.search,
     hash: obj.hash
   };
+  const len = data.length;
   bench.start();
-  for (var i = 0; i < n; i += 1) {
+  for (var i = 0; i < len; i++) {
+    const obj = data[i];
     noDead.protocol = obj.protocol;
     noDead.auth = `${obj.username}:${obj.password}`;
     noDead.host = obj.host;
@@ -67,23 +66,22 @@ function useWHATWG(n, input) {
     noDead.search = obj.search;
     noDead.hash = obj.hash;
   }
-  bench.end(n);
+  bench.end(len);
   return noDead;
 }
 
-function main({ type, n, method }) {
-  const input = inputs[type];
-  if (!input) {
-    throw new Error(`Unknown input type "${type}"`);
-  }
-
+function main({ type, method, e }) {
+  e = +e;
+  var data;
   var noDead;  // Avoid dead code elimination.
   switch (method) {
     case 'legacy':
-      noDead = useLegacy(n, input);
+      data = common.bakeUrlData(type, e, false, false);
+      noDead = useLegacy(data.map((i) => url.parse(i)));
       break;
     case 'whatwg':
-      noDead = useWHATWG(n, input);
+      data = common.bakeUrlData(type, e, false, true);
+      noDead = useWHATWG(data);
       break;
     default:
       throw new Error(`Unknown method "${method}"`);

benchmark/url/legacy-vs-whatwg-url-get-prop.js

@@ -3,47 +3,61 @@ const common = require('../common.js');
 const url = require('url');
 const URL = url.URL;
 const assert = require('assert');
-const inputs = require('../fixtures/url-inputs.js').urls;
 
 const bench = common.createBenchmark(main, {
-  type: Object.keys(inputs),
-  method: ['legacy', 'whatwg'],
-  n: [1e5]
+  withBase: ['true', 'false'],
+  type: common.urlDataTypes,
+  e: [1],
+  method: ['legacy', 'whatwg']
 });
 
-function useLegacy(n, input) {
-  var noDead = url.parse(input);
+function useLegacy(data) {
+  const len = data.length;
+  var result = url.parse(data[0]);  // avoid dead code elimination
   bench.start();
-  for (var i = 0; i < n; i += 1) {
-    noDead = url.parse(input);
+  for (var i = 0; i < len; ++i) {
+    result = url.parse(data[i]);
   }
-  bench.end(n);
-  return noDead;
+  bench.end(len);
+  return result;
 }
 
-function useWHATWG(n, input) {
-  var noDead = new URL(input);
+function useWHATWGWithBase(data) {
+  const len = data.length;
+  var result = new URL(data[0][0], data[0][1]);  // avoid dead code elimination
   bench.start();
-  for (var i = 0; i < n; i += 1) {
-    noDead = new URL(input);
+  for (var i = 0; i < len; ++i) {
+    const item = data[i];
+    result = new URL(item[0], item[1]);
   }
-  bench.end(n);
-  return noDead;
+  bench.end(len);
+  return result;
 }
 
-function main({ type, n, method }) {
-  const input = inputs[type];
-  if (!input) {
-    throw new Error(`Unknown input type "${type}"`);
+function useWHATWGWithoutBase(data) {
+  const len = data.length;
+  var result = new URL(data[0]);  // avoid dead code elimination
+  bench.start();
+  for (var i = 0; i < len; ++i) {
+    result = new URL(data[i]);
   }
+  bench.end(len);
+  return result;
+}
 
+function main({ e, method, type, withBase }) {
+  e = +e;
+  withBase = withBase === 'true';
   var noDead;  // Avoid dead code elimination.
+  var data;
   switch (method) {
     case 'legacy':
-      noDead = useLegacy(n, input);
+      data = common.bakeUrlData(type, e, false, false);
+      noDead = useLegacy(data);
       break;
     case 'whatwg':
-      noDead = useWHATWG(n, input);
+      data = common.bakeUrlData(type, e, withBase, false);
+      noDead = withBase ? useWHATWGWithBase(data) : useWHATWGWithoutBase(data);
       break;
     default:
       throw new Error(`Unknown method ${method}`);

benchmark/url/legacy-vs-whatwg-url-parse.js

@@ -2,7 +2,7 @@
 const common = require('../common.js');
 const { URLSearchParams } = require('url');
 const querystring = require('querystring');
-const searchParams = require('../fixtures/url-inputs.js').searchParams;
+const searchParams = common.searchParams;
 
 const bench = common.createBenchmark(main, {
   searchParam: Object.keys(searchParams),

benchmark/url/legacy-vs-whatwg-url-searchparams-parse.js

@@ -2,7 +2,7 @@
 const common = require('../common.js');
 const { URLSearchParams } = require('url');
 const querystring = require('querystring');
-const searchParams = require('../fixtures/url-inputs.js').searchParams;
+const searchParams = common.searchParams;
 
 const bench = common.createBenchmark(main, {
   searchParam: Object.keys(searchParams),