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  1. using System;
  2. using System.Threading;
  3. using System.Threading.Tasks;
  4.  
  5. namespace Recetas.Multithreading.R0407
  6. {
  7.     public class GestionExcepcionesTarea
  8.     {
  9.         public static void Main()
  10.         {
  11.             Console.WriteLine ();
  12.  
  13.             // Creación y ejecución de tarea sincrónica: 
  14.             Task<int> tarea1;
  15.  
  16.             // Gestión de la excepción producida por `tarea1`: 
  17.             try
  18.              {
  19.                 tarea1 = Task.Run( () => Tarea("Tarea No. 1", 2));
  20.                 int resultado = tarea1.Result;
  21.                 Console.WriteLine ("Resultado de Tarea No. 1: {0}.", resultado);
  22.             }
  23.             catch (Exception ex)
  24.             {
  25.                 Console.WriteLine ("Excepción producida en Tarea No. 1: {0}.", ex);
  26.             }
  27.  
  28.             Console.WriteLine ("------------------------------------------------");
  29.             Console.WriteLine ();
  30.  
  31.             Task tarea2 = new Task<int>(() => Tarea("Tarea No. 2", 3));
  32.             Task tarea3 = new Task<int>(() => Tarea("Tarea No. 4", 2));
  33.  
  34.             // Tarea compuesta: 
  35.             Task tareaCompuesta = Task.WhenAll (tarea2, tarea3);
  36.  
  37.             tareaCompuesta.ContinueWith (t => 
  38.                 Console.WriteLine ("Excepción de `tareaCompuesta`: {0}", t.Exception), 
  39.                 TaskContinuationOptions.OnlyOnFaulted);
  40.  
  41.             // Inicio de la ejecución de `tarea2` y `tarea3`: 
  42.             tarea2.Start();
  43.             tarea3.Start();
  44.  
  45.             // A espera de la finalización de la ejecución de las tareas: 
  46.             Thread.Sleep (TimeSpan.FromSeconds(5));
  47.         }
  48.  
  49.         public static int Tarea(string nombre, int duracion)
  50.         {
  51.             Console.WriteLine("La tarea `{0}` se está ejecutando en el ID de Thread {1}. "
  52.                 + "¿Thread en pool de threads?: {2}", nombre, 
  53.                 Thread.CurrentThread.ManagedThreadId, 
  54.                 Thread.CurrentThread.IsThreadPoolThread);
  55.  
  56.             // Simulación de ejecución tardía: 
  57.             Thread.Sleep (TimeSpan.FromSeconds(duracion));
  58.  
  59.             // Lanzamiento de excepción: 
  60.             throw new Exception("¡Boom!");
  61.  
  62.             return 42 * duracion;
  63.         }
  64.     }
  65. }
Success #stdin #stdout 0.08s 31432KB
comments (?)
stdin 
Standard input is empty
stdout 
La tarea `Tarea No. 1` se está ejecutando en el ID de Thread 4. ¿Thread en pool de threads?: True
Excepción producida en Tarea No. 1: System.AggregateException: One or more errors occurred. ---> System.Exception: ¡Boom!
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.Tarea (System.String nombre, Int32 duracion) [0x00000] in <filename unknown>:0 
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.<Main>m__0 () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task`1[System.Int32].InnerInvoke () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task.Execute () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Threading.Tasks.Task.ThrowIfExceptional (Boolean includeTaskCanceledExceptions) [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task`1[System.Int32].GetResultCore (Boolean waitCompletionNotification) [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task`1[System.Int32].get_Result () [0x00000] in <filename unknown>:0 
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.Main () [0x00000] in <filename unknown>:0 
---> (Inner Exception #0) System.Exception: ¡Boom!
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.Tarea (System.String nombre, Int32 duracion) [0x00000] in <filename unknown>:0 
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.<Main>m__0 () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task`1[System.Int32].InnerInvoke () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task.Execute () [0x00000] in <filename unknown>:0 <---
.
------------------------------------------------

La tarea `Tarea No. 2` se está ejecutando en el ID de Thread 5. ¿Thread en pool de threads?: True
La tarea `Tarea No. 4` se está ejecutando en el ID de Thread 4. ¿Thread en pool de threads?: True
Excepción de `tareaCompuesta`: System.AggregateException: One or more errors occurred. ---> System.Exception: ¡Boom!
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.Tarea (System.String nombre, Int32 duracion) [0x00000] in <filename unknown>:0 
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.<Main>m__1 () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task`1[System.Int32].InnerInvoke () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task.Execute () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
---> (Inner Exception #0) System.Exception: ¡Boom!
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.Tarea (System.String nombre, Int32 duracion) [0x00000] in <filename unknown>:0 
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.<Main>m__1 () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task`1[System.Int32].InnerInvoke () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task.Execute () [0x00000] in <filename unknown>:0 <---

---> (Inner Exception #1) System.Exception: ¡Boom!
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.Tarea (System.String nombre, Int32 duracion) [0x00000] in <filename unknown>:0 
  at Recetas.Multithreading.R0407.GestionExcepcionesTarea.<Main>m__2 () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task`1[System.Int32].InnerInvoke () [0x00000] in <filename unknown>:0 
  at System.Threading.Tasks.Task.Execute () [0x00000] in <filename unknown>:0 <---
https://ideone.com/MOQB7j
Gestion de excepciones en una tarea. [OrtizOL]
language:
C# (gmcs 5.20.1)
created:
8 years ago
visibility:
public

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