Re: Daylight savings time

[Eric Norum <norume@aps.anl.gov>]

I think that WIN32 does provide this routine -- at least my quick  
check with google seems to imply this.
The vxWorks case is a little trickier.  I suppose that someone out  
there actually uses the IOC shell rather than the vxWorks shell.
What's' your feeling on weak references?
How about an epicsTzset() macro in some os-dependent header.  This  
would do nothing on vxWorks and expand to tzset() on all others.

On Mar 13, 2007, at 11:17 AM, Andrew Johnson wrote:

> Eric Norum wrote:
> > Since we're on the topic of time, I'd like to propose the  
> > following  change to the IOC shell.  This is in the handler  
> > function for the  epicsEnvSet command.
> ...
> >      epicsEnvSet (name, value);
> > +    if (strcmp(name, "TZ") == 0) {
> > +        extern void tzset(void);
> > +        tzset();
> > +    }
> > }
> > This will ensure that changes to the TZ environment variable (in  
> > an  st.cmd file, for example) actually have an effect.
>
> That change is not portable; according to my reference manual  
> vxWorks doesn't have a tzset() routine, and I have similar doubts  
> about WIN32. Maybe the correct solution would be to register an OS- 
> specific command that can set the IOC's timezone data?
>
> --
> The right to be heard does not automatically include
> the right to be taken seriously. -- Hubert H. Humphrey

--
Eric Norum <norume@aps.anl.gov>
Advanced Photon Source
Argonne National Laboratory
(630) 252-4793