Created
June 19, 2020 16:31
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performwork
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| let semaphore = DispatchSemaphore(value: 1) | |
| func performWork(queue: DispatchQueue) { | |
| queue.async { | |
| semaphore.wait() | |
| for i in 0...10 { | |
| print (i, queue.label) | |
| semaphore.signal() | |
| } | |
| } | |
| } | |
| performWork(queue: userPriority) | |
| performWork(queue: defaultPriority) |
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