Making "read from file" less blocky.

Tom Glod tom at makeshyft.com
Sat Aug 3 22:47:11 EDT 2019


 Dar, Yes...I understand.....it is a blocking operation no matter what I
can just introduce breaks in the blockiness.  So I'm not expecting a socket
like experience for sure.

Those are very good suggestions to try.... thank you.

Jerry, I will give that a try, it looks promising.....even a little
improvement would be better and sufficient for this need, and I can use it
sparingly.  Thanks alot!  Onward indeed.

On Sat, Aug 3, 2019 at 10:36 PM Jerry Jensen via use-livecode <
use-livecode at lists.runrev.com> wrote:

> Hi Tom,
>
> I’ve done this in the past watching it instead of the result. I seem to
> remember eof was not useful. Maybe for a serial port it would be?
>
> As in:
>
> repeat forever
>   read from file ThisFile for (1024 * 1000) bytes
>   if it is empty then exit repeat
> — do your stuff
>   wait 0 with messages
> end repeat
>
> Onward,
> .Jerry non-sphere (tetrahedron?)
>
> It was a long time ago in, I think, LC 5, so YMMV.
>
>
> > On Aug 3, 2019, at 5:56 PM, Tom Glod via use-livecode <
> use-livecode at lists.runrev.com> wrote:
> >
> > Hey folks,
> >
> > I'm having trouble finding a combination of settings that allows my file
> > loading  to seem to happen in the background.
> >
> >  repeat while read_result is not "eof"
> >         read from file ThisFile for (1024 * 1000) bytes
> >         put the result into read_result
> >         put it after IntoThisVariable
> >         add length(it) to amount_read
> >         TSTProgress amount_read,ExpectedSize,"%","Loading File ..."
> > (Progress Indicator Handler)
> >         wait 10 milliseconds with messages
> >      end repeat
> >
> > no matter what I try, its still sluggish, and it seems like messages are
> > still accumilating instead of being processed by the engine.
> >
> > Am I missing something?  Normally waiting with messages sufficiently
> frees
> > the engine to allow the UI to remain responsive.
> >
> > Thanks,
> >
> > Tom
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