private static readonly object Mutex = new object(); //this object has only 2 states -> lock or unlocked
public static HighlanderThreadSafe GetInstance()
{
lock (Mutex) // this way only 1 thread can create a new instance of
{
if (_instance == null)
{
_instance = new HighlanderThreadSafe();
}
return(_instance);
}
}
private static void SingletonThreadSafeExample()
{
//here we should try and make two thread create an instance at the same time.
HighlanderThreadSafe john = HighlanderThreadSafe.GetInstance();
HighlanderThreadSafe rick = HighlanderThreadSafe.GetInstance();
Console.WriteLine($"john is equal to rick? {ReferenceEquals(john, rick)}");
HighlanderThreadSafeSimpler simpleJohn = HighlanderThreadSafeSimpler.Instance;
HighlanderThreadSafeSimpler simpleRick = HighlanderThreadSafeSimpler.Instance;
Console.WriteLine($"john is equal to rick? {ReferenceEquals(simpleJohn, simpleRick)}");
}
