Added locks around device provider instance usages

RGB.NET.Devices.Asus/AsusDeviceProvider.cs

@@ -16,11 +16,21 @@ public sealed class AsusDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static AsusDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="AsusDeviceProvider"/> instance.
     /// </summary>
-    public static AsusDeviceProvider Instance => _instance ?? new AsusDeviceProvider();
+    public static AsusDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new AsusDeviceProvider();
+        }
+    }
 
     private IAuraSdk2? _sdk;
     private IAuraSyncDeviceCollection? _devices; //HACK DarthAffe 05.04.2021: Due to some researches this might fix the access violation in the asus-sdk
@@ -35,8 +45,11 @@ public sealed class AsusDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public AsusDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(AsusDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(AsusDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -82,14 +95,17 @@ public sealed class AsusDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        try { _sdk?.ReleaseControl(0); }
+            try { _sdk?.ReleaseControl(0); }
-        catch { /* at least we tried */ }
+            catch { /* at least we tried */ }
 
-        _devices = null;
+            _devices = null;
-        _sdk = null;
+            _sdk = null;
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.CoolerMaster/CoolerMasterDeviceProvider.cs

@@ -17,11 +17,21 @@ public sealed class CoolerMasterDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static CoolerMasterDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="CoolerMasterDeviceProvider"/> instance.
     /// </summary>
-    public static CoolerMasterDeviceProvider Instance => _instance ?? new CoolerMasterDeviceProvider();
+    public static CoolerMasterDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new CoolerMasterDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets a modifiable list of paths used to find the native SDK-dlls for x86 applications.
@@ -45,8 +55,11 @@ public sealed class CoolerMasterDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public CoolerMasterDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(CoolerMasterDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(CoolerMasterDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -96,12 +109,15 @@ public sealed class CoolerMasterDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        try { _CoolerMasterSDK.Reload(); }
+            try { _CoolerMasterSDK.Reload(); }
-        catch { /* Unlucky.. */ }
+            catch { /* Unlucky.. */ }
 
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.Corsair/CorsairDeviceProvider.cs

@@ -17,11 +17,21 @@ public sealed class CorsairDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static CorsairDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="CorsairDeviceProvider"/> instance.
     /// </summary>
-    public static CorsairDeviceProvider Instance => _instance ?? new CorsairDeviceProvider();
+    public static CorsairDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new CorsairDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets a modifiable list of paths used to find the native SDK-dlls for x86 applications.
@@ -80,8 +90,11 @@ public sealed class CorsairDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public CorsairDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(CorsairDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(CorsairDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -302,12 +315,18 @@ public sealed class CorsairDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        try { _CUESDK.CorsairDisconnect(); } catch { /* at least we tried */ }
+            try { _CUESDK.CorsairDisconnect(); }
-        try { _CUESDK.UnloadCUESDK(); } catch { /* at least we tried */ }
+            catch { /* at least we tried */ }
 
-        _instance = null;
+            try { _CUESDK.UnloadCUESDK(); }
+            catch { /* at least we tried */ }
+
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.DMX/DMXDeviceProvider.cs

@@ -16,11 +16,21 @@ public sealed class DMXDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static DMXDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="DMXDeviceProvider"/> instance.
     /// </summary>
-    public static DMXDeviceProvider Instance => _instance ?? new DMXDeviceProvider();
+    public static DMXDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new DMXDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets a list of all defined device-definitions.
@@ -37,8 +47,11 @@ public sealed class DMXDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public DMXDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(DMXDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(DMXDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -89,9 +102,12 @@ public sealed class DMXDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.Debug/DebugDeviceProvider.cs

@@ -16,11 +16,21 @@ public sealed class DebugDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static DebugDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="DebugDeviceProvider"/> instance.
     /// </summary>
-    public static DebugDeviceProvider Instance => _instance ?? new DebugDeviceProvider();
+    public static DebugDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new DebugDeviceProvider();
+        }
+    }
 
     private List<(IDeviceLayout layout, Action<IEnumerable<Led>>? updateLedsAction)> _fakeDeviceDefinitions = new();
 
@@ -34,8 +44,11 @@ public sealed class DebugDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public DebugDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(DebugDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(DebugDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -68,11 +81,14 @@ public sealed class DebugDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        _fakeDeviceDefinitions.Clear();
+            _fakeDeviceDefinitions.Clear();
 
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.Logitech/LogitechDeviceProvider.cs

@@ -20,11 +20,21 @@ public class LogitechDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static LogitechDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="LogitechDeviceProvider"/> instance.
     /// </summary>
-    public static LogitechDeviceProvider Instance => _instance ?? new LogitechDeviceProvider();
+    public static LogitechDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new LogitechDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets a modifiable list of paths used to find the native SDK-dlls for x86 applications.
@@ -112,7 +122,7 @@ public class LogitechDeviceProvider : AbstractRGBDeviceProvider
 
         { 0x0A78, RGBDeviceType.Speaker, "G560", LedMappings.ZoneSpeaker, (LogitechDeviceType.Speaker, 4, 0) },
     };
-    
+
     /// <summary>
     /// Gets the HID-definitions for wireless per-zone-devices.
     /// </summary>
@@ -164,8 +174,12 @@ public class LogitechDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public LogitechDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(LogitechDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null)
+                throw new InvalidOperationException($"There can be only one instance of type {nameof(LogitechDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -256,15 +270,18 @@ public class LogitechDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        try { _LogitechGSDK.LogiLedRestoreLighting(); }
+            try { _LogitechGSDK.LogiLedRestoreLighting(); }
-        catch { /* at least we tried */ }
+            catch { /* at least we tried */ }
 
-        try { _LogitechGSDK.UnloadLogitechGSDK(); }
+            try { _LogitechGSDK.UnloadLogitechGSDK(); }
-        catch { /* at least we tried */ }
+            catch { /* at least we tried */ }
 
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.Msi/MsiDeviceProvider.cs

@@ -17,11 +17,21 @@ public class MsiDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static MsiDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="MsiDeviceProvider"/> instance.
     /// </summary>
-    public static MsiDeviceProvider Instance => _instance ?? new MsiDeviceProvider();
+    public static MsiDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new MsiDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets a modifiable list of paths used to find the native SDK-dlls for x86 applications.
@@ -45,8 +55,11 @@ public class MsiDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public MsiDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(MsiDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(MsiDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -100,12 +113,15 @@ public class MsiDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        try { _MsiSDK.UnloadMsiSDK(); }
+            try { _MsiSDK.UnloadMsiSDK(); }
-        catch { /* at least we tried */ }
+            catch { /* at least we tried */ }
-        
+
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.Novation/NovationDeviceProvider.cs

@@ -17,11 +17,21 @@ public sealed class NovationDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static NovationDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="NovationDeviceProvider"/> instance.
     /// </summary>
-    public static NovationDeviceProvider Instance => _instance ?? new NovationDeviceProvider();
+    public static NovationDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new NovationDeviceProvider();
+        }
+    }
 
     #endregion
 
@@ -33,8 +43,11 @@ public sealed class NovationDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     private NovationDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(NovationDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(NovationDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -70,9 +83,12 @@ public sealed class NovationDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.OpenRGB/OpenRGBDeviceProvider.cs

@@ -14,6 +14,9 @@ public sealed class OpenRGBDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private readonly List<OpenRgbClient> _clients = new();
 
     private static OpenRGBDeviceProvider? _instance;
@@ -21,7 +24,14 @@ public sealed class OpenRGBDeviceProvider : AbstractRGBDeviceProvider
     /// <summary>
     /// Gets the singleton <see cref="OpenRGBDeviceProvider"/> instance.
     /// </summary>
-    public static OpenRGBDeviceProvider Instance => _instance ?? new OpenRGBDeviceProvider();
+    public static OpenRGBDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new OpenRGBDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets a list of all defined device-definitions.
@@ -48,8 +58,11 @@ public sealed class OpenRGBDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public OpenRGBDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(OpenRGBDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(OpenRGBDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -151,18 +164,21 @@ public sealed class OpenRGBDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
-
-        foreach (OpenRgbClient client in _clients)
         {
-            try { client.Dispose(); }
+            base.Dispose(disposing);
-            catch { /* at least we tried */ }
+
+            foreach (OpenRgbClient client in _clients)
+            {
+                try { client.Dispose(); }
+                catch { /* at least we tried */ }
+            }
+
+            _clients.Clear();
+            DeviceDefinitions.Clear();
+
+            _instance = null;
         }
-
-        _clients.Clear();
-        DeviceDefinitions.Clear();
-
-        _instance = null;
     }
 
     #endregion

RGB.NET.Devices.PicoPi/PicoPiDeviceProvider.cs

@@ -25,11 +25,21 @@ public sealed class PicoPiDeviceProvider : AbstractRGBDeviceProvider
 
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static PicoPiDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="PicoPiDeviceProvider"/> instance.
     /// </summary>
-    public static PicoPiDeviceProvider Instance => _instance ?? new PicoPiDeviceProvider();
+    public static PicoPiDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new PicoPiDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets the HID-definitions for PicoPi-devices.
@@ -57,8 +67,11 @@ public sealed class PicoPiDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public PicoPiDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(PicoPiDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(PicoPiDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -129,9 +142,12 @@ public sealed class PicoPiDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.Razer/RazerDeviceProvider.cs

@@ -19,11 +19,21 @@ public sealed class RazerDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static RazerDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="RazerDeviceProvider"/> instance.
     /// </summary>
-    public static RazerDeviceProvider Instance => _instance ?? new RazerDeviceProvider();
+    public static RazerDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new RazerDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets a modifiable list of paths used to find the native SDK-dlls for x86 applications.
@@ -254,7 +264,7 @@ public sealed class RazerDeviceProvider : AbstractRGBDeviceProvider
         { 0x0F13, RGBDeviceType.Unknown, "Lian Li O11", LedMappings.ChromaLink, RazerEndpointType.ChromaLink },
         { 0x0F1D, RGBDeviceType.Unknown, "Mouse Bungee V3 Chroma", LedMappings.ChromaLink, RazerEndpointType.ChromaLink },
         { 0x0F1F, RGBDeviceType.LedController, "Addressable RGB Controller", LedMappings.ChromaLink, RazerEndpointType.ChromaLink },
-        
+
     };
 
     #endregion
@@ -267,8 +277,11 @@ public sealed class RazerDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public RazerDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(RazerDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(RazerDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -344,15 +357,18 @@ public sealed class RazerDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        TryUnInit();
+            TryUnInit();
 
-        // DarthAffe 03.03.2020: Fails with an access-violation - verify if an unload is already triggered by uninit
+            // DarthAffe 03.03.2020: Fails with an access-violation - verify if an unload is already triggered by uninit
-        //try { _RazerSDK.UnloadRazerSDK(); }
+            //try { _RazerSDK.UnloadRazerSDK(); }
-        //catch { /* at least we tried */ }
+            //catch { /* at least we tried */ }
 
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.SteelSeries/SteelSeriesDeviceProvider.cs

@@ -20,11 +20,21 @@ public sealed class SteelSeriesDeviceProvider : AbstractRGBDeviceProvider
 
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static SteelSeriesDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="SteelSeriesDeviceProvider"/> instance.
     /// </summary>
-    public static SteelSeriesDeviceProvider Instance => _instance ?? new SteelSeriesDeviceProvider();
+    public static SteelSeriesDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new SteelSeriesDeviceProvider();
+        }
+    }
 
     private const int VENDOR_ID = 0x1038;
 
@@ -93,8 +103,11 @@ public sealed class SteelSeriesDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public SteelSeriesDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(SteelSeriesDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(SteelSeriesDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -135,12 +148,15 @@ public sealed class SteelSeriesDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        try { SteelSeriesSDK.Dispose(); }
+            try { SteelSeriesSDK.Dispose(); }
-        catch { /* shit happens */ }
+            catch { /* shit happens */ }
 
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.WS281X/WS281XDeviceProvider.cs

@@ -16,11 +16,21 @@ public sealed class WS281XDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static WS281XDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="WS281XDeviceProvider"/> instance.
     /// </summary>
-    public static WS281XDeviceProvider Instance => _instance ?? new WS281XDeviceProvider();
+    public static WS281XDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new WS281XDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets a list of all defined device-definitions.
@@ -39,8 +49,11 @@ public sealed class WS281XDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public WS281XDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(WS281XDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(WS281XDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -72,11 +85,14 @@ public sealed class WS281XDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
+        {
+            base.Dispose(disposing);
 
-        DeviceDefinitions.Clear();
+            DeviceDefinitions.Clear();
 
-        _instance = null;
+            _instance = null;
+        }
     }
 
     #endregion

RGB.NET.Devices.Wooting/WootingDeviceProvider.cs

@@ -16,11 +16,21 @@ public sealed class WootingDeviceProvider : AbstractRGBDeviceProvider
 {
     #region Properties & Fields
 
+    // ReSharper disable once InconsistentNaming
+    private static readonly object _lock = new();
+
     private static WootingDeviceProvider? _instance;
     /// <summary>
     /// Gets the singleton <see cref="WootingDeviceProvider"/> instance.
     /// </summary>
-    public static WootingDeviceProvider Instance => _instance ?? new WootingDeviceProvider();
+    public static WootingDeviceProvider Instance
+    {
+        get
+        {
+            lock (_lock)
+                return _instance ?? new WootingDeviceProvider();
+        }
+    }
 
     /// <summary>
     /// Gets a modifiable list of paths used to find the native SDK-dlls for x86 windows applications.
@@ -57,8 +67,11 @@ public sealed class WootingDeviceProvider : AbstractRGBDeviceProvider
     /// <exception cref="InvalidOperationException">Thrown if this constructor is called even if there is already an instance of this class.</exception>
     public WootingDeviceProvider()
     {
-        if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(WootingDeviceProvider)}");
+        lock (_lock)
-        _instance = this;
+        {
+            if (_instance != null) throw new InvalidOperationException($"There can be only one instance of type {nameof(WootingDeviceProvider)}");
+            _instance = this;
+        }
     }
 
     #endregion
@@ -96,15 +109,18 @@ public sealed class WootingDeviceProvider : AbstractRGBDeviceProvider
     /// <inheritdoc />
     protected override void Dispose(bool disposing)
     {
-        base.Dispose(disposing);
+        lock (_lock)
-
-        lock (_WootingSDK.SdkLock)
         {
-            try { _WootingSDK.UnloadWootingSDK(); }
+            base.Dispose(disposing);
-            catch { /* at least we tried */ }
-        }
 
-        _instance = null;
+            lock (_WootingSDK.SdkLock)
+            {
+                try { _WootingSDK.UnloadWootingSDK(); }
+                catch { /* at least we tried */ }
+            }
+
+            _instance = null;
+        }
     }
 
     #endregion