Re: Value of select() descriptor count.

Sorry for the previous incomplete message (keyboard snafu).

I believe it is the maximum socket descriptor being checked plus one
and is scoped to the activation group (for our code we only use one
activation group within our job).  For example if an application
was going to check two sockets for a request the following logic
could be used:
   Desc1 = socket(...);
   Desc2 = socket(...);
   
   SelectDesc = max(Desc1,Desc2) + 1;
   FD_ZERO(&ReadSet);
   FD_SET(Desc1,&ReadSet);
   FD_SET(Desc2,&ReadSet);
   select(SelectDesc,&ReadSet,NULL,NULL,NULL);

Hope this helps,

John Dorn
I/NET, Inc.

Jeffrey M. Silberberg wrote:
> 
>  Mark & All Memers,
> 
>         How does one interupt this ;
> 
> max_descriptor
> (Input) Descriptors are numbered starting at zero, so the max_descriptor
> parameter must specify a value that is one greater than the largest
> descriptor number that is to be tested.
> 
>         In a select(max_descriptor, read_sl, write_sl, excpt_sl, time_out);
> 
>         Is this the one greater than the number of discriptors in the
> three select lists, or one greater than the largest value returned by
> any function that assigns a handle in the ??
> (stack/module/program/activation group). Or is there some other
> definition I am missing here ??
> 
>         Thanks,
>         Jeff Silberberg
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