using System;
using System.Threading;
 
namespace Recetas.CSharp.Cap04.R0409
{
    public class BaseDeDatos
    {
        private static Mutex mutex = new Mutex();
 
        public static void EscribirDatos(string datos)
        {
            // Bloqueo y posesión del recurso compartido:
            mutex.WaitOne();
 
            Console.WriteLine ("La ejecución de `EscribirDatos` ha iniciado.");
            Console.WriteLine ("`EscribirDatos` en ejecución...");
            for (int i = 1; i <= 10; ++i)
            {
                Thread.Sleep (100);
                Console.WriteLine (datos);
            }
            Console.WriteLine ("\n`EscribirDatos` ha terminado.");
            mutex.ReleaseMutex();
        }
    }
 
    public sealed class AccesoBaseDatosMutex
    {
        public static void Main()
        {
            Console.Title = "Acceso a Base de Datos Sincronizado con Mutex";
            Console.WriteLine ();
 
            // Crea dos threads:
            Thread t1 = new Thread (TareaEscribirDatos1);
            Thread t2 = new Thread (TareaEscribirDatos2);
 
            t1.Start();
            t2.Start();
 
            Console.WriteLine ();
        }
 
        private static void TareaEscribirDatos1()
        {
            Console.WriteLine ("Primera tarea de escribir datos iniciada.");
            BaseDeDatos.EscribirDatos ("Blog");
            Console.WriteLine ("La tarea no. 1 ha finalizado");
        }
 
        private static void TareaEscribirDatos2()
        {
            Console.WriteLine ("Segunda tarea de escribir datos iniciada.");
            BaseDeDatos.EscribirDatos ("xCSw");
            Console.WriteLine ("La tarea no. 2 ha finalizado");
        }
    }
}

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