From 371a09c60bddb49298e2cf7f1968514ab4d243e4 Mon Sep 17 00:00:00 2001 From: Bond_009 Date: Fri, 7 Aug 2020 17:38:01 +0200 Subject: MemoryStream optimizations --- .../AppBase/ConfigurationHelper.cs | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'Emby.Server.Implementations/AppBase/ConfigurationHelper.cs') diff --git a/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs b/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs index 0b681fddf..4c9ab33a7 100644 --- a/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs +++ b/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs @@ -1,3 +1,5 @@ +#nullable enable + using System; using System.IO; using System.Linq; @@ -22,7 +24,7 @@ namespace Emby.Server.Implementations.AppBase { object configuration; - byte[] buffer = null; + byte[]? buffer = null; // Use try/catch to avoid the extra file system lookup using File.Exists try @@ -36,19 +38,23 @@ namespace Emby.Server.Implementations.AppBase configuration = Activator.CreateInstance(type); } - using var stream = new MemoryStream(); + using var stream = new MemoryStream(buffer?.Length ?? 0); xmlSerializer.SerializeToStream(configuration, stream); // Take the object we just got and serialize it back to bytes - var newBytes = stream.ToArray(); + byte[] newBytes = stream.GetBuffer(); + int newBytesLen = (int)stream.Length; // If the file didn't exist before, or if something has changed, re-save - if (buffer == null || !buffer.SequenceEqual(newBytes)) + if (buffer == null || !newBytes.AsSpan(0, newBytesLen).SequenceEqual(buffer)) { Directory.CreateDirectory(Path.GetDirectoryName(path)); // Save it after load in case we got new items - File.WriteAllBytes(path, newBytes); + using (var fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read)) + { + fs.Write(newBytes, 0, newBytesLen); + } } return configuration; -- cgit v1.2.3