using System.Runtime.CompilerServices; namespace System.Reactive.Linq.ObservableImpl { [System.Runtime.CompilerServices.NullableContext(1)] [System.Runtime.CompilerServices.Nullable(new byte[] { 0, 1, 1, 1 })] internal sealed class Synchronize<[System.Runtime.CompilerServices.Nullable(2)] TSource> : Producer<TSource, Synchronize<TSource>._> { [System.Runtime.CompilerServices.Nullable(new byte[] { 0, 1 })] internal sealed class _ : IdentitySink<TSource> { private readonly object _gate; public _([System.Runtime.CompilerServices.Nullable(2)] object gate, IObserver<TSource> observer) : base(observer) { _gate = (gate ?? new object()); } public override void OnNext(TSource value) { lock (_gate) { ForwardOnNext(value); } } public override void OnError(Exception error) { lock (_gate) { ForwardOnError(error); } } public override void OnCompleted() { lock (_gate) { ForwardOnCompleted(); } } } private readonly IObservable<TSource> _source; [System.Runtime.CompilerServices.Nullable(2)] private readonly object _gate; public Synchronize(IObservable<TSource> source, object gate) { _source = source; _gate = gate; } public Synchronize(IObservable<TSource> source) { _source = source; } [return: System.Runtime.CompilerServices.Nullable(new byte[] { 1, 0 })] protected override _ CreateSink(IObserver<TSource> observer) { return new _(_gate, observer); } protected override void Run([System.Runtime.CompilerServices.Nullable(new byte[] { 1, 0 })] _ sink) { sink.Run(_source); } } }