// <copyright file="AppSwitches.cs" company="Math.NET">
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// Math.NET Numerics, part of the Math.NET Project
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// https://numerics.mathdotnet.com
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// https://github.com/mathnet/mathnet-numerics
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// https://mathnetnumerics.codeplex.com
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//
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// Copyright (c) 2009-2020 Math.NET
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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// </copyright>
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namespace IStation.Numerics
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{
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/// <summary>
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/// AppContext based switches to disable functionality, controllable through also in the
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/// host application through AppContext or by configuration with AppContextSwitchOverride.
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/// https://docs.microsoft.com/en-us/dotnet/framework/configure-apps/file-schema/runtime/appcontextswitchoverrides-element
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/// </summary>
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/// <remarks>
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/// Since AppContext is not supported on .NET Framework 4.0, a local implementation is used there instead,
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/// which cannot be controlled though configuration or through AppContext.
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/// </remarks>
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public static class AppSwitches
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{
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const string AppSwitchDisableNativeProviderProbing = "Switch.IStation.Numerics.Providers.DisableNativeProviderProbing";
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const string AppSwitchDisableNativeProviders = "Switch.IStation.Numerics.Providers.DisableNativeProviders";
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const string AppSwitchDisableMklNativeProvider = "Switch.IStation.Numerics.Providers.DisableMklNativeProvider";
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const string AppSwitchDisableAcmlNativeProvider = "Switch.IStation.Numerics.Providers.DisableAcmlNativeProvider";
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const string AppSwitchDisableCudaNativeProvider = "Switch.IStation.Numerics.Providers.DisableCudaNativeProvider";
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const string AppSwitchDisableOpenBlasNativeProvider = "Switch.IStation.Numerics.Providers.DisableOpenBlasNativeProvider";
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#if NET40
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static readonly System.Collections.Generic.Dictionary<string, bool> Switches = new System.Collections.Generic.Dictionary<string, bool>();
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#endif
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static void SetSwitch(string switchName, bool isEnabled)
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{
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#if NET40
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Switches[switchName] = isEnabled;
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#else
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System.AppContext.SetSwitch(switchName, isEnabled);
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#endif
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}
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static bool IsEnabled(string switchName)
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{
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#if NET40
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return Switches.TryGetValue(switchName, out bool isEnabled) && isEnabled;
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#else
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return System.AppContext.TryGetSwitch(switchName, out bool isEnabled) && isEnabled;
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#endif
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}
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public static bool DisableNativeProviderProbing
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{
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get => IsEnabled(AppSwitchDisableNativeProviderProbing);
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set => SetSwitch(AppSwitchDisableNativeProviderProbing, value);
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}
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public static bool DisableNativeProviders
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{
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get => IsEnabled(AppSwitchDisableNativeProviders);
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set => SetSwitch(AppSwitchDisableNativeProviders, value);
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}
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public static bool DisableMklNativeProvider
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{
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get => IsEnabled(AppSwitchDisableMklNativeProvider);
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set => SetSwitch(AppSwitchDisableMklNativeProvider, value);
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}
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public static bool DisableAcmlNativeProvider
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{
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get => IsEnabled(AppSwitchDisableAcmlNativeProvider);
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set => SetSwitch(AppSwitchDisableAcmlNativeProvider, value);
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}
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public static bool DisableCudaNativeProvider
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{
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get => IsEnabled(AppSwitchDisableCudaNativeProvider);
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set => SetSwitch(AppSwitchDisableCudaNativeProvider, value);
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}
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public static bool DisableOpenBlasNativeProvider
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{
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get => IsEnabled(AppSwitchDisableOpenBlasNativeProvider);
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set => SetSwitch(AppSwitchDisableOpenBlasNativeProvider, value);
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}
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}
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}
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