FreeTDS Development Group

["James K. Lowden" <jklowden AT freetds.org>]

Christos Zoulas wrote:
> On Jan 28,  8:53am, jklowden AT freetds.org ("James K. Lowden") wrote:
> -- Subject: Re: [freetds] siginterrupt
> 
> | ZIGLIO, Frediano, VF-IT wrote:
> | > I finally found why signal handling can be so different from system
> | > to system. The reason is RESTART flag. If this flag is set select do
> | > not interrupt and return EINTR but just continue. 
> | 
> | My copy of Steven's UNP is at home.  I think that flag may not be
> | standard?  
> 
> It is best practice to assume that it is not set and handle the INTR in
> a loop:
> 
>     http://www.opengroup.org/pubs/online/7908799/xsh/select.html

Especially because:

        "If SA_RESTART has been set for the interrupting signal, it is
implementation-dependent whether select() restarts or returns with
[EINTR]."

Some "standard".  The option exists but what it does varies.  

--jkl