Re: [Boost-users] Can boost.asio read/write io of files asynchronously?

On 01/09/2020 11:54, Richard Hodges via Boost-users wrote:

Asio certainly has support for asynchronous file IO. I have used it on linux systems for a multitude of file handle types, including console I/O.

Unless you were using a custom io_uring based i/o service, all your asynchronous file i/o on Linux was actually synchronous all along. Linux doesn't implement async file i/o until io_uring, and even then, not properly until kernel 5.5 and even then again, not really until kernel 5.9 releases. Some would argue that proper, reliable, sans-pathological-corner-case async file i/o won't arrive in Linux until some time in the 6.x kernel series. Niall