Why does mmap fail on iOS?

Question

I\'m trying to use mmap to read and play audio files on iOS. It works fine for files up to about 400MB. But when I try a 500MB file, I get a ENOMEM error.

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Answer 1

Use NSData and dont touch mmap directly here.

To get the advantages of faulting reads, use NSDataReadingMapped. NSData ALSO frees bytes when in low-mem situations