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What is Most Optimized Thread Safe Way To Lock Resources for Singleton Pattern?

Varun Setia

Varun Setia
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Problem Statement is: the lock statement is used in case of implementing the Thread Safe Singleton Pattern.
The question is, we need to lock a resource but using a lock(x){} statement is bit expensive as per the interviewer. What is the most efficient or optimum way to lock a resource without using lock statement?

Is there any catch or trick in this question?

    Aisha Omar

    one way to implement thread safe single is via use of static.

    public sealed class Singleton
    {
    private static readonly Singleton obj = new Singleton();
    public static Singleton Obj { get { return obj; } } 

    1. public sealed class Singleton
    2. {
    3.  private static readonly Singleton obj = new Singleton();
    5.  public static Singleton Obj 
    6.  { 
    7.  get 
    8.  { 
    9.  return obj; 
    10.  } 
    11.  }
    13.  private Singleton() {}
    14. }

    To access the instance of Singleton Class:
    Singleton mySingleton = Singleton.Obj;

    Aisha Omar
    1y
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