AsyncDolls.AsyncPumpScript.TheCompletePumpWithAsyncHandleMessage C# (CSharp) Method

        public async Task TheCompletePumpWithAsyncHandleMessage()
        {
            var runningTasks = new ConcurrentDictionary<Task, Task>();
            var semaphore = new SemaphoreSlim(100);
            var tokenSource = new CancellationTokenSource(TimeSpan.FromSeconds(5));
            var token = tokenSource.Token;
            int numberOfTasks = 0;

            var pumpTask = Task.Run(async () =>
            {
                while (!token.IsCancellationRequested)
                {
                    await semaphore.WaitAsync(token).ConfigureAwait(false);
                    Interlocked.Increment(ref numberOfTasks);

                    var task = HandleMessageWithCancellation(token);

                    runningTasks.TryAdd(task, task);

                    task.ContinueWith(t =>
                    {
                        semaphore.Release();
                        Task taskToBeRemoved;
                        runningTasks.TryRemove(t, out taskToBeRemoved);
                    }, TaskContinuationOptions.ExecuteSynchronously)
                        .Ignore();
                }
            });

            await pumpTask.IgnoreCancellation().ConfigureAwait(false);
            await Task.WhenAll(runningTasks.Values).IgnoreCancellation().ConfigureAwait(false);
            tokenSource.Dispose();
            semaphore.Dispose();

            $"Consumed {numberOfTasks} messages with concurrency {semaphore.CurrentCount} in 5 seconds. Throughput {numberOfTasks / 5} msgs/s"
                .Output();
        }