1 files changed, 134 insertions, 0 deletions
diff --git a/FilesystemBenchmark/Benchmarks.cs b/FilesystemBenchmark/Benchmarks.cs
new file mode 100644
index 0000000..9ab044a
--- /dev/null
+++ b/FilesystemBenchmark/Benchmarks.cs
@@ -0,0 +1,134 @@
+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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