72 lines
2 KiB
Dart
72 lines
2 KiB
Dart
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// Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:convert';
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import 'dart:typed_data';
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import 'package:package_config/src/errors.dart';
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import 'package:package_config/src/package_config_json.dart';
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void bench(final int size, final bool doPrint) {
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var sb = StringBuffer();
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sb.writeln('{');
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sb.writeln('"configVersion": 2,');
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sb.writeln('"packages": [');
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for (var i = 0; i < size; i++) {
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if (i != 0) {
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sb.writeln(',');
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}
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sb.writeln('{');
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sb.writeln(' "name": "p_$i",');
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sb.writeln(' "rootUri": "file:///p_$i/",');
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sb.writeln(' "packageUri": "lib/",');
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sb.writeln(' "languageVersion": "2.5",');
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sb.writeln(' "nonstandard": true');
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sb.writeln('}');
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}
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sb.writeln('],');
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sb.writeln('"generator": "pub",');
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sb.writeln('"other": [42]');
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sb.writeln('}');
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var stopwatch = Stopwatch()..start();
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var config = parsePackageConfigBytes(
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// ignore: unnecessary_cast
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utf8.encode(sb.toString()) as Uint8List,
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Uri.parse('file:///tmp/.dart_tool/file.dart'),
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throwError,
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);
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final read = stopwatch.elapsedMilliseconds;
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stopwatch.reset();
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for (var i = 0; i < size; i++) {
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if (config.packageOf(Uri.parse('file:///p_$i/lib/src/foo.dart'))!.name !=
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'p_$i') {
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throw StateError('Unexpected result!');
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}
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}
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final lookup = stopwatch.elapsedMilliseconds;
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if (doPrint) {
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print('Read file with $size packages in $read ms, '
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'looked up all packages in $lookup ms');
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}
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}
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void main(List<String> args) {
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if (args.length != 1 && args.length != 2) {
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throw ArgumentError('Expects arguments: <size> <warmup iterations>?');
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}
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final size = int.parse(args[0]);
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if (args.length > 1) {
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final warmups = int.parse(args[1]);
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print('Performing $warmups warmup iterations.');
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for (var i = 0; i < warmups; i++) {
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bench(10, false);
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}
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}
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// Benchmark.
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bench(size, true);
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}
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