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using System.Collections.Concurrent;
using System.Security.Cryptography;
using ArcaneLibs.Extensions;
using BenchmarkDotNet.Attributes;
namespace FilesystemBenchmark;
public class Benchmarks {
private string testPath = "/home/Rory/.local/share/ModerationClient/default/syncCache";
private EnumerationOptions enumOpts = new EnumerationOptions() {
MatchType = MatchType.Simple,
AttributesToSkip = FileAttributes.None,
IgnoreInaccessible = false,
RecurseSubdirectories = true
};
[Benchmark]
public void GetFilesMatching() {
_ = Directory.GetFiles(testPath, "*.*", SearchOption.AllDirectories).Count();
}
[Benchmark]
public void EnumerateFilesMatching() {
_ = Directory.EnumerateFiles(testPath, "*.*", SearchOption.AllDirectories).Count();
}
[Benchmark]
public void GetFilesMatchingSingleStar() {
_ = Directory.GetFiles(testPath, "*", SearchOption.AllDirectories).Count();
}
[Benchmark]
public void EnumerateFilesMatchingSingleStar() {
_ = Directory.EnumerateFiles(testPath, "*", SearchOption.AllDirectories).Count();
}
[Benchmark]
public void GetFilesMatchingSingleStarSimple() {
_ = Directory.GetFiles(testPath, "*", new EnumerationOptions() {
MatchType = MatchType.Simple,
AttributesToSkip = FileAttributes.None,
IgnoreInaccessible = false,
RecurseSubdirectories = true
}).Count();
}
[Benchmark]
public void EnumerateFilesMatchingSingleStarSimple() {
_ = Directory.EnumerateFiles(testPath, "*", new EnumerationOptions() {
MatchType = MatchType.Simple,
AttributesToSkip = FileAttributes.None,
IgnoreInaccessible = false,
RecurseSubdirectories = true
}).Count();
}
[Benchmark]
public void GetFilesMatchingSingleStarSimpleCached() {
_ = Directory.GetFiles(testPath, "*", enumOpts).Count();
}
[Benchmark]
public void EnumerateFilesMatchingSingleStarSimpleCached() {
_ = Directory.EnumerateFiles(testPath, "*", enumOpts).Count();
}
// [Benchmark]
// public void GetFilesRecursiveFunc() {
// GetFilesRecursive(testPath);
// }
//
// [Benchmark]
// public void GetFilesRecursiveParallelFunc() {
// GetFilesRecursiveParallel(testPath);
// }
//
// [Benchmark]
// public void GetFilesRecursiveEntriesFunc() {
// GetFilesRecursiveEntries(testPath);
// }
//
// [Benchmark]
// public void GetFilesRecursiveAsyncFunc() {
// GetFilesRecursiveAsync(testPath).ToBlockingEnumerable();
// }
private List<string> GetFilesRecursive(string path) {
var result = new List<string>();
foreach (var dir in Directory.GetDirectories(path)) {
result.AddRange(GetFilesRecursive(dir));
}
result.AddRange(Directory.GetFiles(path));
return result;
}
private List<string> GetFilesRecursiveEntries(string path) {
var result = new List<string>();
foreach (var entry in Directory.EnumerateFileSystemEntries(path)) {
if (Directory.Exists(entry)) {
result.AddRange(GetFilesRecursiveEntries(entry));
}
else {
result.Add(entry);
}
}
return result;
}
private List<string> GetFilesRecursiveParallel(string path) {
var result = new ConcurrentBag<string>();
Directory.GetDirectories(path).AsParallel().ForAll(dir => {
GetFilesRecursiveParallel(dir).ForEach(result.Add);
});
Directory.GetFiles(path).AsParallel().ForAll(result.Add);
return result.ToList();
}
private async IAsyncEnumerable<string> GetFilesRecursiveAsync(string path) {
foreach (var dir in Directory.GetDirectories(path)) {
foreach (var file in GetFilesRecursiveAsync(dir).ToBlockingEnumerable()) {
yield return file;
}
}
foreach (var file in Directory.GetFiles(path)) {
yield return file;
}
}
}
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