if_data size issues

Brooks Davis brooks at one-eyed-alien.net
Wed Sep 1 22:13:49 PDT 2004


On Wed, Sep 01, 2004 at 09:49:45PM -0400, Garance A Drosihn wrote:
> In a later message, Brooks Davis wrote:
> >
> >Given the pain this change is causing and the limited impact of
> >reducing the precision of ifi_epoch, I propose the following:
> >
> > - Back out the ifi_epoch addition.
> > - MT5 and MT4 Peter's size change.
> > - Turn ifi_unused into ifi_epoch.
> 
> Given the time-constraints in that we want a solution "right now",
> these seem like good ideas.

I've done the backout and will submit Peter's change for MT5 on the 4th.
I'll do the ifi_unused => ifi_epoch change soon, but I need to verify my
theory that I can use a time_t without changing the struct size.

> > - After 5.3 is released, declare that upgrades to 6.0 from releases
> >   other then 4.x (x>=11) and 5.y (y>=3) require special handling
> >   and allow if_data to grow as demand requires.
> > - If additional precision is deemed necessary at some future date,
> >   add a second ifi_epoch_tv.
> 
> We do not have to come to an agreement on these steps until we are
> ready to make additional changes to the structure.  Something along
> these lines seems reasonable to me, but I don't think that we have
> to declare any specific timetables right now.

Agreed.  I think it would be useful to declare upfront that should a
change be made, we are willing to jetison full, offical support for
upgrades to 6.0 from 5.x (x<3), but that's a minor detail.

-- Brooks

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