Modern API to async copy big files with throughput?

App & System Services Core OS
dafi OP
Created Dec ’21
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I'm maintaining a very old Obj-c app using the very useful FSCopyObjectAsync and FSMoveObjectAsync APIs to make async copy with progress info (including the throughput)

Now I must drop compatibility with 10.9 and I would to replace these APIs (consider they are no longer available with Swift), but Apple deprecated them without a replacement, any hints?

I found the C API copyfile, it doesn't return the throughput and the fixed read buffer size (65k) is ridicolous because copy is very slow compared to FSCopyObjectAsync.

I would avoid to fork copyfile...

Do you know some other more Apple-like API similar to FSCopyObjectAsync?

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davec_adobe OP
Sep ’22

Just want to register that i'm stunned that Apple hasn't provided a tech note on this

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Modern API to async copy big files with throughput?
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