Enable application-defined Synchronize gate in AsyncRx.NET

AsyncRx.NET/System.Reactive.Async/Disposables/CompositeAsyncDisposable.cs

@@ -4,14 +4,14 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using System.Threading;
+using System.Reactive.Threading;
 using System.Threading.Tasks;
 
 namespace System.Reactive.Disposables
 {
     public sealed class CompositeAsyncDisposable : IAsyncDisposable
     {
-        private readonly AsyncGate _gate = new();
+        private readonly IAsyncGate _gate = AsyncGate.Create();
         private readonly List<IAsyncDisposable> _disposables;
         private bool _disposed;
 

AsyncRx.NET/System.Reactive.Async/Disposables/RefCountAsyncDisposable.cs

@@ -2,14 +2,15 @@
 // The .NET Foundation licenses this file to you under the MIT License.
 // See the LICENSE file in the project root for more information. 
 
+using System.Reactive.Threading;
 using System.Threading;
 using System.Threading.Tasks;
 
 namespace System.Reactive.Disposables
 {
     public sealed class RefCountAsyncDisposable : IAsyncDisposable
     {
-        private readonly AsyncGate _gate = new();
+        private readonly IAsyncGate _gate = AsyncGate.Create();
         private IAsyncDisposable _disposable;
         private bool _primaryDisposed;
         private int _count;

AsyncRx.NET/System.Reactive.Async/Disposables/SerialAsyncDisposable.cs

@@ -2,14 +2,14 @@
 // The .NET Foundation licenses this file to you under the MIT License.
 // See the LICENSE file in the project root for more information. 
 
-using System.Threading;
+using System.Reactive.Threading;
 using System.Threading.Tasks;
 
 namespace System.Reactive.Disposables
 {
     public sealed class SerialAsyncDisposable : IAsyncDisposable
     {
-        private readonly AsyncGate _gate = new();
+        private readonly IAsyncGate _gate = AsyncGate.Create();
 
         private IAsyncDisposable _disposable;
         private bool _disposed;

AsyncRx.NET/System.Reactive.Async/Internal/ScheduledAsyncObserverBase.cs

@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information. 
 
 using System.Collections.Generic;
+using System.Reactive.Threading;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -12,7 +13,7 @@ internal abstract class ScheduledAsyncObserverBase<T> : AsyncObserverBase<T>, IS
     {
         private readonly IAsyncObserver<T> _observer;
 
-        private readonly AsyncGate _lock = new();
+        private readonly IAsyncGate _lock = AsyncGate.Create();
         private readonly Queue<T> _queue = new();
 
         private bool _hasFaulted = false;

AsyncRx.NET/System.Reactive.Async/Joins/AsyncJoinObserver.cs

@@ -5,7 +5,7 @@
 using System.Collections.Generic;
 using System.Reactive.Disposables;
 using System.Reactive.Linq;
-using System.Threading;
+using System.Reactive.Threading;
 using System.Threading.Tasks;
 
 namespace System.Reactive.Joins
@@ -18,7 +18,7 @@ internal sealed class AsyncJoinObserver<T> : AsyncObserverBase<Notification<T>>,
         private readonly List<ActiveAsyncPlan> _activePlans = new();
         private readonly SingleAssignmentAsyncDisposable _subscription = new();
 
-        private AsyncGate _gate;
+        private IAsyncGate _gate;
         private bool _isDisposed;
 
         public AsyncJoinObserver(IAsyncObservable<T> source, Func<Exception, ValueTask> onError)
@@ -56,7 +56,7 @@ public async ValueTask DisposeAsync()
             }
         }
 
-        public async Task SubscribeAsync(AsyncGate gate)
+        public async Task SubscribeAsync(IAsyncGate gate)
         {
             _gate = gate;
 

AsyncRx.NET/System.Reactive.Async/Joins/IAsyncJoinObserver.cs

@@ -2,14 +2,14 @@
 // The .NET Foundation licenses this file to you under the MIT License.
 // See the LICENSE file in the project root for more information. 
 
-using System.Threading;
+using System.Reactive.Threading;
 using System.Threading.Tasks;
 
 namespace System.Reactive.Joins
 {
     internal interface IAsyncJoinObserver : IAsyncDisposable
     {
-        Task SubscribeAsync(AsyncGate gate);
+        Task SubscribeAsync(IAsyncGate gate);
 
         void Dequeue();
     }

AsyncRx.NET/System.Reactive.Async/Linq/Operators/Amb.cs

@@ -5,7 +5,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Reactive.Disposables;
-using System.Threading;
+using System.Reactive.Threading;
 using System.Threading.Tasks;
 
 namespace System.Reactive.Linq
@@ -83,7 +83,7 @@ public static (IAsyncObserver<TSource>, IAsyncObserver<TSource>) Amb<TSource>(IA
             if (second == null)
                 throw new ArgumentNullException(nameof(second));
 
-            var gate = new AsyncGate();
+            var gate = AsyncGate.Create();
 
             var state = AmbState.None;
 
@@ -199,7 +199,7 @@ public static IAsyncObserver<TSource>[] Amb<TSource>(IAsyncObserver<TSource> obs
             if (subscriptions == null)
                 throw new ArgumentNullException(nameof(subscriptions));
 
-            var gate = new AsyncGate();
+            var gate = AsyncGate.Create();
 
             var winner = default(int?);
 

AsyncRx.NET/System.Reactive.Async/Linq/Operators/Buffer.cs

@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Reactive.Concurrency;
 using System.Reactive.Disposables;
+using System.Reactive.Threading;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -306,7 +307,7 @@ public static IAsyncObserver<TSource> Buffer<TSource>(IAsyncObserver<IList<TSour
 
             async Task<(IAsyncObserver<TSource>, IAsyncDisposable)> CoreAsync()
             {
-                var gate = new AsyncGate();
+                var gate = AsyncGate.Create();
 
                 var buffer = new List<TSource>();
 
@@ -378,7 +379,7 @@ public static IAsyncObserver<TSource> Buffer<TSource>(IAsyncObserver<IList<TSour
 
             async Task<(IAsyncObserver<TSource>, IAsyncDisposable)> CoreAsync()
             {
-                var gate = new AsyncGate();
+                var gate = AsyncGate.Create();
 
                 var queue = new Queue<List<TSource>>();
 
@@ -509,7 +510,7 @@ TimeSpan GetNextDue()
 
             async Task<(IAsyncObserver<TSource>, IAsyncDisposable)> CoreAsync()
             {
-                var gate = new AsyncGate();
+                var gate = AsyncGate.Create();
 
                 var timer = new SerialAsyncDisposable();
 
@@ -586,7 +587,7 @@ public static (IAsyncObserver<TSource>, IAsyncObserver<TBufferBoundary>) Buffer<
             if (observer == null)
                 throw new ArgumentNullException(nameof(observer));
 
-            var gate = new AsyncGate();
+            var gate = AsyncGate.Create();
 
             var buffer = new List<TSource>();
 
@@ -660,7 +661,7 @@ public static (IAsyncObserver<TSource>, IAsyncObserver<TBufferBoundary>) Buffer<
             {
                 var closeSubscription = new SerialAsyncDisposable();
 
-                var gate = new AsyncGate();
+                var gate = AsyncGate.Create();
                 var queueLock = new AsyncQueueLock();
 
                 var buffer = new List<TSource>();