Changing Thread-Safety Dynamically

Sometimes there may be a need to decide dynamically (through code in your program) whether a class is thread-safe or not. This is the technique I use:

public class SomeClass

{

    private Boolean threadSafe = false;

    private readonly Object syncRoot = new Object();

    //gets or sets whether this object is thread-safe or not

    //in this case we are locking directly on the syncRoot field

    public Boolean ThreadSafe

    {

        get { lock(this.syncRoot) { return(this.threadSafe); } }

        set { lock(this.syncRoot) { this.threadSafe = value; } }

    }

    //Property used for thread synchronization

    public Object SyncRoot

    {

        get

        {

            return(this.ThreadSafe == true ? this.syncRoot : new Object());

        }

    }

    public void SomeMethod()

    {

        //always lock on the SyncRoot property, not the syncRoot field

        lock (this.SyncRoot)

        {

            //do something

        }

    }

}