Created
October 16, 2020 06:39
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async init locker?
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| using System; | |
| using System.Threading; | |
| using System.Threading.Tasks; | |
| namespace ConsoleTasks | |
| { | |
| class Program | |
| { | |
| private static async Task<bool> InitLocker(int taskId, int seconds, CancellationToken cancellationToken) | |
| { | |
| Console.WriteLine($"Task {taskId} started"); | |
| for (int i = 0; i < 10; i++) | |
| { | |
| await Task.Delay(100 * seconds); | |
| cancellationToken.ThrowIfCancellationRequested(); | |
| if (i % 2 == 0) | |
| { | |
| Console.Write(taskId); | |
| } | |
| } | |
| Console.WriteLine($"Task {taskId} completed"); | |
| return true; | |
| } | |
| static async Task Main(string[] args) | |
| { | |
| try | |
| { | |
| Console.WriteLine("Starting a lot of tasks.."); | |
| var source = new CancellationTokenSource(); | |
| source.CancelAfter(TimeSpan.FromSeconds(25)); // <== timeout 21 seconds | |
| var task1 = InitLocker(1, 8, source.Token); | |
| var task2 = InitLocker(2, 15, source.Token); | |
| var task3 = InitLocker(3, 30, source.Token); | |
| Task<bool>[] all = {task1, task2, task3}; | |
| // Task.WaitAll(allTasks, source.Token); <= not async | |
| Console.WriteLine("Setup done, wait for all tasks to complete OR cancel OR timeout"); | |
| await Task.WhenAll(all); | |
| Console.WriteLine("All tasks done =) Great success"); | |
| } | |
| catch (OperationCanceledException err) | |
| { | |
| Console.WriteLine("Cancelled" + err.Message); | |
| } | |
| catch (Exception err) | |
| { | |
| Console.WriteLine("something else?" + err.Message); | |
| } | |
| } | |
| } | |
| } |
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