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Questions - grand-central-dispatch

Is DispatchQueue using RunLoop?

Every Thread has its own RunLoop, how DispatchQueue interact with them? Is DispatchQueue using RunLoop to dispatch task to Thread or do it by another way?
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Grigorii

swift

grand-central-dispatch

nsoperationqueue

dispatch-queue

runloop

Votes: 0

Answers: 1

Latest Answer

Any thread can have a run loop, but, nowadays, in practice, only the main thread does. When you create a thread manually, it will not have a run loop. When you call RunLoop.current, the name suggests ...
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Rob

How to properly deallocate semaphore?

Steps to reproduce crash: If semaphore.wait() is called and then deinitialize the view controller that owns it before calling semaphore.signal, app crashes. Getting below error on dinit of the class: ...
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Dhruvil Patel

swift

grand-central-dispatch

semaphore

dispatchsemaphore

Votes: 0

Answers: 0

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Is there a way to enforce serial scheduling of async/await calls similar to a GCD serial queue?

Using Swift's new async/await functionality, I want to emulate the scheduling behavior of a serial queue (similar to how one might use a DispatchQueue or OperationQueue in the past). Simplifying my us...
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bplattenburg

swift

async-await

grand-central-dispatch

nsoperationqueue

Votes: 0

Answers: 1

Latest Answer

A few observations: For the sake of clarity, your operation queue implementation does not “[enforce] the serial execution” of the network requests. Your operations are only wrapping the preparation o...
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Rob

DispatchQueue.main and DispatchQueue.global are same in swift?

Dispatchqueue.main runs on main thread and global runs on background thread, is that correct? If not, then what’s the difference?
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Vyankatesh

swift

multithreading

grand-central-dispatch

Votes: 0

Answers: 1

Latest Answer

You ask: DispatchQueue.main runs on main thread and global runs on background thread is that correct? Yes, the main queue is a serial queue that runs dispatched tasks on the main thread. A global qu...
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Rob

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