jlaitine commented on pull request #4779:
URL: https://github.com/apache/incubator-nuttx/pull/4779#issuecomment-961629697


   > The only issue with moving these functions into libc is that it modifies 
the OS interface definition and violates the portable POSIX interface.
   > 
   > We normally keep non-standard helper functions like under apps/ so avoid 
contaminating the OS interface.with non-standard functions.
   > 
   > I think the fact that they are prototyped in nuttx/c;lock.h does at least 
make their non-standard nature clearer (but doesn't help with portability).
   
   Thanks for your advice!
   
   I am of course willing to re-work this if you can advice how to nicely 
implement the change in libs/libc/wqueue/work_usrthread.c
   
   One obvious way is of course to duplicate the tick->timespec calculations 
locally in there (where I actually started at...). I was trying to avoid doing 
that, since it turns out to be a bit more complex than I first thought, 
considering all the different platforms, supported data-types etc.
   
   
   
   


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