> Windows should have its own specific function.

Either that or mimic it properly. Having a single function that requires 
different parameters based on OS is a very user-hostile design.

If someone wants to shepherd it through the process, I'd support either 
making the typical POSIX values do sensible equivalents on Windows (as 
best possible), or adding a new function entirely and deprecating all 
use of the current one on Windows. Those are the only ways to lead 
people into writing code that works well on all platforms.

(My *real* preference is that people stop trying to kill applications ;) 
and try to set up a safe communication channel instead, but I know it's 
often unavoidable. Having common parameters that do the Right Things on 
all platforms is next best.)