Name for this pattern? (Answer: lazy initialization with double-checked locking)

Question

Consider the following code:

public class Foo
{
    private static object _lock = new object();

    public void NameDoesNotMatter()
    {
        if( SomeDataDo         


        

Answer 1

The only name that comes to mind for this kind of is "Faulting". This name is used in iOS Core-Data framework to similar effect.

Basically, your method NameDoesNotMatter is a fault, and whenever someone invokes it, it results in the object to get populated or initialized.

See http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreData/Articles/cdFaultingUniquing.html for more details on how this design pattern is used.