Re: Sleep Function

[Simon Coulter <shc@xxxxxxxxxxxxxxxxx>]

On Thursday, October 30, 2003, at 08:28  AM, MWalter@xxxxxxxxxxxxxxx 
wrote:

> Hbnddir('QC2LE') dftactgrp(*no) actgrp(*new)
> Dsleep            PR            10i 0 extproc('sleep')
> D secs                          10i 0 const
> D curtime         S               t
> D rtn             S                   like(sleep)
> D secs            S             10i 0 inz(10)
>  /free
>      curtime = %time();
>      dsply curtime;
>      rtn = sleep(secs);
>      curtime = %time();
>      dsply curtime;
>      *inlr = *on;
>  /end-free

Change the prototype for the seconds parameter to specify VALUE rather 
than CONST. C expects all parameters to be passed by value (except 
'special' things like arrays and strings (which are just arrays 
anyway--and arrays are treated like pointers so C really passes the 
address of the array by value so now we come full circle. Man! C sucks).

You are passing seconds by constant reference (i.e., as a pointer) to 
the seconds value but sleep() is interpreting the first 4 bytes of the 
pointer as an integer and goes to sleep for a very long time since the 
first 4 bytes of a space pointer is something like 08000000 (which is 
approximately 2222 hours).

Regards,
Simon Coulter.
--------------------------------------------------------------------
   FlyByNight Software         AS/400 Technical Specialists

   http://www.flybynight.com.au/
   Phone: +61 3 9419 0175   Mobile: +61 0411 091 400        /"\
   Fax:   +61 3 9419 0175                                   \ /
                                                             X
                 ASCII Ribbon campaign against HTML E-Mail  / \
--------------------------------------------------------------------