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Diffstat (limited to 'src/mscorlib/src/System/AppContext/AppContextSwitches.cs')
-rw-r--r--src/mscorlib/src/System/AppContext/AppContextSwitches.cs110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/AppContext/AppContextSwitches.cs b/src/mscorlib/src/System/AppContext/AppContextSwitches.cs
new file mode 100644
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+++ b/src/mscorlib/src/System/AppContext/AppContextSwitches.cs
@@ -0,0 +1,110 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System
+{
+ using System;
+ using System.Runtime.CompilerServices;
+
+ internal static class AppContextSwitches
+ {
+ private static int _noAsyncCurrentCulture;
+ public static bool NoAsyncCurrentCulture
+ {
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ get
+ {
+ return GetCachedSwitchValue(AppContextDefaultValues.SwitchNoAsyncCurrentCulture, ref _noAsyncCurrentCulture);
+ }
+ }
+
+ private static int _throwExceptionIfDisposedCancellationTokenSource;
+ public static bool ThrowExceptionIfDisposedCancellationTokenSource
+ {
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ get
+ {
+ return GetCachedSwitchValue(AppContextDefaultValues.SwitchThrowExceptionIfDisposedCancellationTokenSource, ref _throwExceptionIfDisposedCancellationTokenSource);
+ }
+ }
+
+ private static int _preserveEventListnerObjectIdentity;
+ public static bool PreserveEventListnerObjectIdentity
+ {
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ get
+ {
+ return GetCachedSwitchValue(AppContextDefaultValues.SwitchPreserveEventListnerObjectIdentity, ref _preserveEventListnerObjectIdentity);
+ }
+ }
+
+#if FEATURE_PATHCOMPAT
+ private static int _useLegacyPathHandling;
+
+ /// <summary>
+ /// Use legacy path normalization logic and blocking of extended syntax.
+ /// </summary>
+ public static bool UseLegacyPathHandling
+ {
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ get
+ {
+ return GetCachedSwitchValue(AppContextDefaultValues.SwitchUseLegacyPathHandling, ref _useLegacyPathHandling);
+ }
+ }
+
+ private static int _blockLongPaths;
+
+ /// <summary>
+ /// Throw PathTooLongException for paths greater than MAX_PATH or directories greater than 248 (as per CreateDirectory Win32 limitations)
+ /// </summary>
+ public static bool BlockLongPaths
+ {
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ get
+ {
+ return GetCachedSwitchValue(AppContextDefaultValues.SwitchBlockLongPaths, ref _blockLongPaths);
+ }
+ }
+#endif // FEATURE_PATHCOMPAT
+
+ //
+ // Implementation details
+ //
+
+ private static bool DisableCaching { get; set; }
+
+ static AppContextSwitches()
+ {
+ bool isEnabled;
+ if (AppContext.TryGetSwitch(@"TestSwitch.LocalAppContext.DisableCaching", out isEnabled))
+ {
+ DisableCaching = isEnabled;
+ }
+ }
+
+ [MethodImpl(MethodImplOptions.AggressiveInlining)]
+ internal static bool GetCachedSwitchValue(string switchName, ref int switchValue)
+ {
+ if (switchValue < 0) return false;
+ if (switchValue > 0) return true;
+
+ return GetCachedSwitchValueInternal(switchName, ref switchValue);
+ }
+
+ private static bool GetCachedSwitchValueInternal(string switchName, ref int switchValue)
+ {
+ bool isSwitchEnabled;
+ AppContext.TryGetSwitch(switchName, out isSwitchEnabled);
+
+ if (DisableCaching)
+ {
+ return isSwitchEnabled;
+ }
+
+ switchValue = isSwitchEnabled ? 1 /*true*/ : -1 /*false*/;
+ return isSwitchEnabled;
+ }
+ }
+}