gistfile1.txt

+ (id)sharedWhatever
{
	static Whatever *whatever = nil;
	if( !whatever )
	{
		Whatever *newWhatever = [[self alloc] init];
		if( !OSAtomicCompareAndSwapPtrBarrier( nil, newWhatever, (void *)&whatever ) )
		{
			[newWhatever release];
		}
	}
	
	return whatever;
}