I've had no problem using databases for practically everything (as opposed to the
heap.)
The only things I am forced to use the heap for is things which simply cannot work
well with DmWrite because they involve high
speed, random access writes.
But even there - flexibility is an impressive thing - when I find I cannot find memory
even for that, well, then, I just have to
find a way to not use the heap.
This is, btw, a good lead in to my question about feature memory, which is another
alternative to using the RAM heap.
[EMAIL PROTECTED] wrote:
> > Check out the Programmer's Companion on the PalmOS web site
>
> And while you're there, click on the link to "Writing Robust Code" and read the
> part under "Use dynamic heap space frugally".
>
> I'm not really sure how knowing the answer to Alan's question will help anyone
> write more robust software, so I'm kind of worried that the wrong solution is
> being taken to a problem. If you're working in a constrained environment like
> the Palm OS dynamic heap, it's wrong to ask "OK, just how much heap is there?"
> My feeling is the right question is: "How little of the dynamic heap can I take
> up, and how should my application react when it can't get that room?" Because,
> when it comes down to it, knowing how much room is supposed to be in the heap is
> just theory. In practice, you could have more, you could have less. And
> (heh...I started my sentence with a conjunction...William Forrester would be
> proud...), as Alan found out, not all of that heap space is contiguous. It
> could be highly fragmented. So knowing how much space should be there or is
> there really doesn't buy you anything. You have to take the conditions as they
> are and react accordingly.
>
> Of course, I'm just speaking from a lofty Theory Chair myself. If anyone has
> Practical Hammer to hit me over the head with, please feel free to go ahead and
> pummel me with Reality. :-)
>
> -- Keith Rollin
> -- Palm OS Emulator engineer
>
> "B. Cameron Lesiuk" <[EMAIL PROTECTED]> on 01/24/2001 08:23:27 PM
>
> Please respond to "Palm Developer Forum" <[EMAIL PROTECTED]>
>
> Sent by: "B. Cameron Lesiuk" <[EMAIL PROTECTED]>
>
> To: "Palm Developer Forum" <[EMAIL PROTECTED]>
> cc: (Keith Rollin/US/PALM)
> Subject: Re: Dynamic Heap Size..?
>
> Check out the Programmer's Companion on the PalmOS web site
>
> http://www.palmos.com/dev/tech/docs/palmos/Memory.html
>
> You'll want to read the whole thing.
> The chart you're looking for is near the very bottom.
> -Cam
>
> Alan Ingleby wrote:
>
> > A) Is there a way to programmatically determine the Dynamic Heap size?
> > B) Is these a chart which shows the Dynamic Heaps sizes for OS3.5 when
> > installed on different machines, with different amounts of RAM?
> >
> > The reason I ask is that my program barfs when running on POSE due to
> > insufficient dynamic heap under OS3.5 EZ ROM with 1 meg of RAM, but DOESN'T
> > when running the OS3.5 Color EZ ROM on 1 Meg of RAM.
> >
> > Regards,
> >
> > Alan Ingleby
>
> --
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