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[benchmarks] Add LongStringCompare benchmark that measure string comparison performance.
BUG=https://github.com/dart-lang/sdk/issues/50190 TEST=ci Change-Id: I1cb93455283b19cf1a712132920b7d3e1dabcd8a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/269380 Commit-Queue: Alexander Aprelev <aam@google.com> Reviewed-by: Siva Annamalai <asiva@google.com>
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benchmarks/StringCompare/dart/LongStringCompare.dart
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benchmarks/StringCompare/dart/LongStringCompare.dart
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// Copyright (c) 2022, 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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//
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// Measure performance of string comparison.
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import 'package:benchmark_harness/benchmark_harness.dart';
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class LongStringCompare extends BenchmarkBase {
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late String s, t;
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String generateLongString() {
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var s = "abcdefgh";
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for (int i = 0; i < 20; i++) {
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s = "$s ghijkl $s";
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}
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return s;
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}
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LongStringCompare() : super('LongStringCompare') {
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s = generateLongString();
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t = s;
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// Difference in two strings goes in the middle.
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s += "." + s;
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t += "!" + t;
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}
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@override
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void warmup() {
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for (int i = 0; i < 4; i++) {
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run();
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}
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}
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@override
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void run() {
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bool b = true;
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for (int i = 0; i < 5; i++) {
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b &= (s == t);
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}
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}
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}
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void main() {
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LongStringCompare().report();
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}
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