Hi Xavi,
If the time to complete the function is deterministic, it is real time safe.
System calls (blocking ones) have "unbounded execution time", and as such are not rt safe.
If your I/O will take a significant amount of time, I suggest offloading to a worker thread.
Hth, -Harry
Hello,
I'm wondering whether it's safe to do non-blocking reads or writes from inside the process callback.
>From what I've seen, non-blocking I/O doesn't cause the process to go into blocked state, and the realtime scheduler should not switch to another process. But the documentation doesn't seem to allow them:
> [...] it cannot call functions that might block for a long time. This
> includes all I/O functions (disk, TTY, network), [...]
So, is it safe to use non-blocking I/O in the process callback?
Thank you,
Xavi
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