move to new System.Threading.Lock type for better performance

Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs

@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Threading;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Events;
 using MediaBrowser.Common.Extensions;
@@ -19,7 +20,7 @@ namespace Emby.Server.Implementations.AppBase
     public abstract class BaseConfigurationManager : IConfigurationManager
     {
         private readonly ConcurrentDictionary<string, object> _configurations = new();
-        private readonly object _configurationSyncLock = new();
+        private readonly Lock _configurationSyncLock = new();
 
         private ConfigurationStore[] _configurationStores = Array.Empty<ConfigurationStore>();
         private IConfigurationFactory[] _configurationFactories = Array.Empty<IConfigurationFactory>();

Emby.Server.Implementations/Devices/DeviceId.cs

@@ -4,6 +4,7 @@ using System;
 using System.Globalization;
 using System.IO;
 using System.Text;
+using System.Threading;
 using MediaBrowser.Common.Configuration;
 using Microsoft.Extensions.Logging;
 
@@ -13,7 +14,7 @@ namespace Emby.Server.Implementations.Devices
     {
         private readonly IApplicationPaths _appPaths;
         private readonly ILogger<DeviceId> _logger;
-        private readonly object _syncLock = new object();
+        private readonly Lock _syncLock = new();
 
         private string? _id;
 

Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs

@@ -34,7 +34,7 @@ public sealed class LibraryChangedNotifier : IHostedService, IDisposable
     private readonly IUserManager _userManager;
     private readonly ILogger<LibraryChangedNotifier> _logger;
 
-    private readonly object _libraryChangedSyncLock = new();
+    private readonly Lock _libraryChangedSyncLock = new();
     private readonly List<Folder> _foldersAddedTo = new();
     private readonly List<Folder> _foldersRemovedFrom = new();
     private readonly List<BaseItem> _itemsAdded = new();

Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs

@@ -24,7 +24,7 @@ namespace Emby.Server.Implementations.EntryPoints
         private readonly IUserManager _userManager;
 
         private readonly Dictionary<Guid, List<BaseItem>> _changedItems = new();
-        private readonly object _syncLock = new();
+        private readonly Lock _syncLock = new();
 
         private Timer? _updateTimer;
 

Emby.Server.Implementations/IO/FileRefresher.cs

@@ -18,8 +18,8 @@ namespace Emby.Server.Implementations.IO
         private readonly ILibraryManager _libraryManager;
         private readonly IServerConfigurationManager _configurationManager;
 
-        private readonly List<string> _affectedPaths = new List<string>();
-        private readonly object _timerLock = new object();
+        private readonly List<string> _affectedPaths = new();
+        private readonly Lock _timerLock = new();
         private Timer? _timer;
         private bool _disposed;
 

Emby.Server.Implementations/Library/LibraryManager.cs

@@ -81,8 +81,8 @@ namespace Emby.Server.Implementations.Library
         /// <summary>
         /// The _root folder sync lock.
         /// </summary>
-        private readonly object _rootFolderSyncLock = new object();
-        private readonly object _userRootFolderSyncLock = new object();
+        private readonly Lock _rootFolderSyncLock = new();
+        private readonly Lock _userRootFolderSyncLock = new();
 
         private readonly TimeSpan _viewRefreshInterval = TimeSpan.FromHours(24);
 

Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs

@@ -27,7 +27,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         private readonly IApplicationPaths _applicationPaths;
         private readonly ILogger _logger;
         private readonly ITaskManager _taskManager;
-        private readonly object _lastExecutionResultSyncLock = new();
+        private readonly Lock _lastExecutionResultSyncLock = new();
         private bool _readFromFile;
         private TaskResult _lastExecutionResult;
         private Task _currentTask;

Emby.Server.Implementations/Session/SessionWebSocketListener.cs

@@ -41,7 +41,7 @@ namespace Emby.Server.Implementations.Session
         /// <summary>
         /// Lock used for accessing the WebSockets watchlist.
         /// </summary>
-        private readonly object _webSocketsLock = new object();
+        private readonly Lock _webSocketsLock = new();
 
         private readonly ISessionManager _sessionManager;
         private readonly ILogger<SessionWebSocketListener> _logger;

Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs

@@ -67,7 +67,7 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <remarks>
         /// This lock has priority on locks made on <see cref="Group"/>.
         /// </remarks>
-        private readonly object _groupsLock = new object();
+        private readonly Lock _groupsLock = new();
 
         private bool _disposed = false;
 

Emby.Server.Implementations/Updates/InstallationManager.cs

@@ -48,7 +48,7 @@ namespace Emby.Server.Implementations.Updates
         /// </summary>
         /// <value>The application host.</value>
         private readonly IServerApplicationHost _applicationHost;
-        private readonly object _currentInstallationsLock = new object();
+        private readonly Lock _currentInstallationsLock = new();
 
         /// <summary>
         /// The current installations.

MediaBrowser.Common/Plugins/BasePluginOfT.cs

@@ -4,6 +4,7 @@
 using System;
 using System.IO;
 using System.Runtime.InteropServices;
+using System.Threading;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Model.Plugins;
 using MediaBrowser.Model.Serialization;
@@ -20,12 +21,12 @@ namespace MediaBrowser.Common.Plugins
         /// <summary>
         /// The configuration sync lock.
         /// </summary>
-        private readonly object _configurationSyncLock = new object();
+        private readonly Lock _configurationSyncLock = new();
 
         /// <summary>
         /// The configuration save lock.
         /// </summary>
-        private readonly object _configurationSaveLock = new object();
+        private readonly Lock _configurationSaveLock = new();
 
         /// <summary>
         /// The configuration.

MediaBrowser.Controller/Entities/AggregateFolder.cs

@@ -23,7 +23,7 @@ namespace MediaBrowser.Controller.Entities
     /// </summary>
     public class AggregateFolder : Folder
     {
-        private readonly object _childIdsLock = new object();
+        private readonly Lock _childIdsLock = new();
 
         /// <summary>
         /// The _virtual children.

MediaBrowser.Controller/Entities/UserRootFolder.cs

@@ -21,7 +21,7 @@ namespace MediaBrowser.Controller.Entities
     /// </summary>
     public class UserRootFolder : Folder
     {
-        private readonly object _childIdsLock = new object();
+        private readonly Lock _childIdsLock = new();
         private List<Guid> _childrenIds = null;
 
         /// <summary>

MediaBrowser.Controller/MediaEncoding/TranscodingJob.cs

@@ -12,8 +12,8 @@ namespace MediaBrowser.Controller.MediaEncoding;
 public sealed class TranscodingJob : IDisposable
 {
     private readonly ILogger<TranscodingJob> _logger;
-    private readonly object _processLock = new();
-    private readonly object _timerLock = new();
+    private readonly Lock _processLock = new();
+    private readonly Lock _timerLock = new();
 
     private Timer? _killTimer;
 

MediaBrowser.Controller/Net/BasePeriodicWebSocketListener.cs

@@ -33,7 +33,7 @@ namespace MediaBrowser.Controller.Net
             SingleWriter = false
         });
 
-        private readonly object _activeConnectionsLock = new();
+        private readonly Lock _activeConnectionsLock = new();
 
         /// <summary>
         /// The _active connections.

MediaBrowser.Controller/Session/SessionInfo.cs

@@ -25,7 +25,7 @@ namespace MediaBrowser.Controller.Session
         private readonly ISessionManager _sessionManager;
         private readonly ILogger _logger;
 
-        private readonly object _progressLock = new();
+        private readonly Lock _progressLock = new();
         private Timer _progressTimer;
         private PlaybackProgressInfo _lastProgressInfo;
 

MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs

@@ -62,7 +62,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
 
         private readonly AsyncNonKeyedLocker _thumbnailResourcePool;
 
-        private readonly object _runningProcessesLock = new object();
+        private readonly Lock _runningProcessesLock = new();
         private readonly List<ProcessWrapper> _runningProcesses = new List<ProcessWrapper>();
 
         // MediaEncoder is registered as a Singleton

MediaBrowser.Providers/Manager/ProviderManager.cs

@@ -48,7 +48,7 @@ namespace MediaBrowser.Providers.Manager
     /// </summary>
     public class ProviderManager : IProviderManager, IDisposable
     {
-        private readonly object _refreshQueueLock = new();
+        private readonly Lock _refreshQueueLock = new();
         private readonly ILogger<ProviderManager> _logger;
         private readonly IHttpClientFactory _httpClientFactory;
         private readonly ILibraryMonitor _libraryMonitor;

src/Jellyfin.LiveTv/Timers/ItemDataProvider.cs

@@ -6,6 +6,7 @@ using System.Diagnostics.CodeAnalysis;
 using System.IO;
 using System.Linq;
 using System.Text.Json;
+using System.Threading;
 using Jellyfin.Extensions.Json;
 using Microsoft.Extensions.Logging;
 
@@ -15,7 +16,7 @@ namespace Jellyfin.LiveTv.Timers
         where T : class
     {
         private readonly string _dataPath;
-        private readonly object _fileDataLock = new object();
+        private readonly Lock _fileDataLock = new();
         private readonly JsonSerializerOptions _jsonOptions = JsonDefaults.Options;
         private T[]? _items;
 

src/Jellyfin.Networking/Manager/NetworkManager.cs

@@ -27,7 +27,7 @@ public class NetworkManager : INetworkManager, IDisposable
     /// <summary>
     /// Threading lock for network properties.
     /// </summary>
-    private readonly object _initLock;
+    private readonly Lock _initLock;
 
     private readonly ILogger<NetworkManager> _logger;
 
@@ -35,7 +35,7 @@ public class NetworkManager : INetworkManager, IDisposable
 
     private readonly IConfiguration _startupConfig;
 
-    private readonly object _networkEventLock;
+    private readonly Lock _networkEventLock;
 
     /// <summary>
     /// Holds the published server URLs and the IPs to use them on.
@@ -93,7 +93,7 @@ public class NetworkManager : INetworkManager, IDisposable
         _interfaces = new List<IPData>();
         _macAddresses = new List<PhysicalAddress>();
         _publishedServerUrls = new List<PublishedServerUriOverride>();
-        _networkEventLock = new object();
+        _networkEventLock = new();
         _remoteAddressFilter = new List<IPNetwork>();
 
         _ = bool.TryParse(startupConfig[DetectNetworkChangeKey], out var detectNetworkChange);