hard20 pts · first answer countsswiftconcurrency

Blocking inside an async function

An async function calls DispatchSemaphore.wait() to wait for another async task to signal. Under load the app hangs. Why?

A.Semaphores only work when used on the main threadB.async functions cannot call any Dispatch APIC.wait() always returns at once inside async codeD.It blocks a pool thread that other tasks need

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Blocking inside an async function

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