GCD obtaining queue name/label

How can I get the current queue name?

I mean queue label like com.example.myqueue.

In the Xcode 4 debugger I 开发者_开发百科can see just _block_invoke_1.

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How about dispatch_queue_get_label?

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In Objective-C you can log the label of the current queue with:

NSLog(@"%s", dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL));

In Swift (2.0):

print(String(UTF8String: dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL))!)