// Create a static method for object creation
//With double-checking it ok but lock kills the performance
public static MyRepoSingletonThreadSafe GetInstance()
{
// Only instantiate the object when needed.
if (uniqueInstance == null)
{
Thread.Sleep(5); //to simulate access by multithread
lock (myLock)
{
if (uniqueInstance == null)
{
Console.WriteLine("A singleton has been created");
uniqueInstance = new MyRepoSingletonThreadSafe();
}
}
}
return(uniqueInstance);
}
//MyRepoSingletonNotThreadSafe -> run it 5 or 6 time to see random behaviour (write one or two messages)
//MyRepoSingletonThreadSafe -> Always two messages
private static MyRepoSingletonThreadSafe MyRepo()
{
return(MyRepoSingletonThreadSafe.GetInstance());
}
