OpenEuphoria

Re: Storing Data for Web Site

• Posted by Robert Craig <rds at RapidEuphoria.com> Sep 10, 2005
• 614 views

Vincent wrote:
> 
> Robert Craig wrote:
> > 
> > A Euphoria database is pretty efficient. It stores
> > small integers in one byte, not four. The overhead
> > on sequences is also pretty low.
> > I think you'll run into trouble at around 2Gb.
> > You would have to store your data in multiple databases at that point.
> > Someday I (or someone else) should try to make the limit
> > much larger.
> > 
> 
> Rob how would someone go about increasing the limit to 4 GB max? According to
> the EDS
> docs, the limited it caused by C file routines used in the interpreter
> internally?

You'd think the limit would be 4GB, but I recall that some of the
C library routines will fail after 2GB.

Windows/Linux/FreeBSD have newer file routines that go beyond
4-byte file offsets. I would need to start using those.
EDS would also have to be adjusted to use greater than
4-byte offsets.
 
> Also, how is that PD-source going, almost ready to release it for community
> testing?

The new cooperative multitasking feature is working fine.
It was used in the game of Language War that I just won (expert level )

I'll release it pretty soon, maybe next week.
I'm just mulling over possible improvements,
and thinking of other demos I could write to show it off.

As you recall, it goes beyond what has been done already
in Language War, and other multitasking systems in User Contributions,
since each task gets its own separate call stack, program counter
and private variables. For example, a task can be buried many levels deep 
in subroutine calls, and easily transfer control back and forth 
with other tasks, while maintaining its own private data.
I have an example where two instances of quick sort run in parallel
with two instances of shell sort, and everything comes out correct in
the end.

Regards,
   Rob Craig
   Rapid Deployment Software
   http://www.RapidEuphoria.com