[fpc-pascal] Translating from error numbers to symbolic name

[waldo kitty]

On 8/3/2012 18:24, Marco van de Voort wrote:

> EAGAIN generally means that you should try again. So repeat until
>
>    repeat
>      res:=dofunc;
>      err:=geterrno;
>    until (res<>-1) or ((err<>ESysEINTR) and (err<>ESysEAgain));
>
> it is a workaround against potential deadlock between userland and kernel
> iirc. Retrying means it can simple work.

should there be some sort of retry count or timing period in which to decide to 
give up so that one doesn't retry forever? if yes, how might that be 
accomplished? ;)

admittedly, i may have missed something in the ESysEINTR and ESysAgain portion 
since i'm a new babe with regards to signaling like that... but i just had to 
ask, ya know? ;)