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by nemanjaboric 3238 days ago
Which API are you referring to? If you're referring to `aio_` that's just glibc's user-space thread-pool emulation of the POSIX's asynchronous IO + many operations needed for the truly async IO are not supported (such as `stat` and `open`). There's `io_` syscalls family, but that's not in the ready-to-use state yet, judging by the manpages and various patches being submitted every month.
1 comments
vbezhenar 3238 days ago
I'm referring to `fcntl(fd, F_SETFL, flags | O_NONBLOCK)`. `stat`, `open` are blocking, yes, didn't think about that. Also according to [1] file operations will always block, even in non-blocking mode, so I was wrong, sorry.

1: https://www.remlab.net/op/nonblock.shtml

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signa11 3238 days ago
> ... Also according to [1] file operations will always block ...

not quite :) look at aio(7)

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