Merge pull request dotnet/coreclr#14178 from stephentoub/async_avoid_delegate

Avoid async method delegate allocation

Signed-off-by: dotnet-bot-corefx-mirror <dotnet-bot@microsoft.com>

Author: stephentoub

src/Common/src/CoreLib/System/Runtime/CompilerServices/ConfiguredValueTaskAwaitable.cs

@@ -39,7 +39,7 @@ public struct ConfiguredValueTaskAwaiter : ICriticalNotifyCompletion
             /// <summary>The value being awaited.</summary>
             private ValueTask<TResult> _value; // Methods are called on this; avoid making it readonly so as to avoid unnecessary copies
             /// <summary>The value to pass to ConfigureAwait.</summary>
-            private readonly bool _continueOnCapturedContext;
+            internal readonly bool _continueOnCapturedContext;
 
             /// <summary>Initializes the awaiter.</summary>
             /// <param name="value">The value to be awaited.</param>
@@ -66,6 +66,9 @@ public void OnCompleted(Action continuation) =>
             /// <summary>Schedules the continuation action for the <see cref="ConfiguredValueTaskAwaitable{TResult}"/>.</summary>
             public void UnsafeOnCompleted(Action continuation) =>
                 _value.AsTask().ConfigureAwait(_continueOnCapturedContext).GetAwaiter().UnsafeOnCompleted(continuation);
+
+            /// <summary>Gets the task underlying <see cref="_value"/>.</summary>
+            internal Task<TResult> AsTask() => _value.AsTask();
         }
     }
 }

src/Common/src/CoreLib/System/Runtime/CompilerServices/ValueTaskAwaiter.cs

@@ -33,5 +33,8 @@ public void OnCompleted(Action continuation) =>
         /// <summary>Schedules the continuation action for this ValueTask.</summary>
         public void UnsafeOnCompleted(Action continuation) =>
             _value.AsTask().ConfigureAwait(continueOnCapturedContext: true).GetAwaiter().UnsafeOnCompleted(continuation);
+
+        /// <summary>Gets the task underlying <see cref="_value"/>.</summary>
+        internal Task<TResult> AsTask() => _value.AsTask();
     }
 }