task-parallel-library

问题 I have this action on one of my controllers which is called by another method which has been called also by another action. All works fine, unless I try to en-queue with Hangfire some jobs: _bankClient.FetchAndEnsureTransactionsAsync and _bankClient.RefreshItemAsync . This is causing the application to freeze (the client, browser, stops while the server is still running). I suppose is some weird deadlock , but nothing I've tried seems to make it work! Would someone know how to solve this

问题 This question already has answers here : Synchronously waiting for an async operation, and why does Wait() freeze the program here (4 answers) Closed 5 years ago . So I'm writing an application in which I want to expose a series of methods with both synchronous and asynchronous equivalents. To do this, I figured the easiest approach was to write the logic in the asnyc method, and write synchronous methods as wrappers around the async methods, waiting synchronously for them to deliver their

问题 This question already has answers here : Synchronously waiting for an async operation, and why does Wait() freeze the program here (4 answers) Closed 5 years ago . So I'm writing an application in which I want to expose a series of methods with both synchronous and asynchronous equivalents. To do this, I figured the easiest approach was to write the logic in the asnyc method, and write synchronous methods as wrappers around the async methods, waiting synchronously for them to deliver their

问题 So currently I have a Task.ContinueWith extensions method like so: public static Task ContinueWith_UsingSyncContextWorkaround(this Task task, Action<Task> continuationAction, CancellationToken cancellationToken, TaskContinuationOptions continuationOptions, TaskScheduler scheduler, SynchronizationContext sc) { Action<Task> actionWithWorkaround = t => { SynchronizationContext.SetSynchronizationContext(sc); continuationAction(t); }; return task.ContinueWith(actionWithWorkaround,

问题 I want that the method executes tasks in parallel and when the task is finished "yield return" the result. Is it possible to have something like that : public IEnumerable<string> GetAllLogs() { var computers = GetComputers() .Where(cpt => cpt.IsOnline); Parallel.ForEach(computers, c => c.GetLogs()); // How to 'yield return' ? } Thx !!! EDIT : Maybe my previous sample was not enough explicit here a new and (I hope) more explicit one ;-) I want to know how to parallize the GetAllLogs method :

问题 I want that the method executes tasks in parallel and when the task is finished "yield return" the result. Is it possible to have something like that : public IEnumerable<string> GetAllLogs() { var computers = GetComputers() .Where(cpt => cpt.IsOnline); Parallel.ForEach(computers, c => c.GetLogs()); // How to 'yield return' ? } Thx !!! EDIT : Maybe my previous sample was not enough explicit here a new and (I hope) more explicit one ;-) I want to know how to parallize the GetAllLogs method :

问题 I've got the following sample code: static class Program { static void Main() { var cts = new CancellationTokenSource(); var task = Task.Factory.StartNew( () => { try { Console.WriteLine("Task: Running"); Thread.Sleep(5000); Console.WriteLine("Task: ThrowIfCancellationRequested"); cts.Token.ThrowIfCancellationRequested(); Thread.Sleep(2000); Console.WriteLine("Task: Completed"); } catch (Exception exception) { Console.WriteLine("Task: " + exception.GetType().Name); throw; } }).ContinueWith(t

问题 I understand that the TPL uses work-stealing queues for its tasks when I execute things like Parallel.For and similar constructs. If I understand this correctly, the construct will spin up a number of tasks, where each will start processing items. If one of the tasks complete their allotted items, it will start stealing items from the other tasks which hasn't yet completed theirs. This solves the problem where items 1-100 are cheap to process and items 101-200 are costly, and one of the two

问题 I have tried implementing depth first search in c# but I am not exactly sure how to do this the distributed computing way. If you guys can help me out in this i would be really grateful :) You can find my DFS code below public class DFS { static List<string> traversedList = new List<string>(); static List<string> parentList = new List<string>(); public static void Main(string[] args) { int N = 100; int M = N * 4; int P = N * 16; Stack newstack = new Stack(); List<string> global_list=new List

问题 I am experiencing some temporary dead lock in my code and can't wrap my head around it. Simple code (I cannot create a simple call chain to reproduce the code in InvokeChangeEvent ) [Test] public async void Test() { sut.InvokeChangeEvent("./foo.file"); // Event is handled by an async handler chaining multiple await resulting in a file write // await Task.Delay(3000); Assert.That(() => Directory.GetFiles("some dir").Count(), Is.EqualTo(3).After(15000, 300)); } I am aware that y'all (:D) want