gistfile1.c

non-ARC recursive block

	void __block (^batchReaderRecursive)(NSUInteger position, NSUInteger count);		// Used for the recursive reference
	void (^batchReader)(NSUInteger position, NSUInteger count);							// Used to reference the block

	batchReaderRecursive = batchReader = [^(NSUInteger position, NSUInteger count) {
	
	  dispatch_async(background queue, ^{
	
	      // Do work, update position abd count
	    
	        dispatch_async(main queue, ^{
	          if(work remains) {
	              batchReaderRecursive(nextPosition, nextCount);
	          else 
	             	[batchReaderRecursive release];
	        });
	    });
    } copy];
    
  batchReader(0,itemCount);