[Gambas-user] How to import and/or use Linux function "memcopy"?

[Jussi Lahtinen]

iArray.Data gives the pointer you need.

Jussi


On Sat, Jan 25, 2014 at 4:12 PM, Carl Nilsson <nilsson at ...1979...> wrote:

> Good evening Benoit:
> Actually, it is the C function memmove that I
> want to use.  I will be using it all the time to
> shuffle array elements along, like a shift
> register in data filtering.  The Windows function
> CopyMemory  is very fast and much more efficient
> than using do loops in VB6.  It is also very
> useful in handling serial input byte data which
> comes in varying size packets.  I have been using
> the Win kernel CopyMemory for years in VB6
> without problems and I wish to implement similar
> functionality in the port to Gambas.  This
> evening I have got as far as being able to run
> memmove in Gambas, but not yet correctly.  I'm
> still struggling a bit with pointers.  It seems I
> cannot use VarPtr on a (1-D) integer array at a
> particular element number of a linear, say,
> integer array like VarPtr(iArray[18]).  So I have
> got as far as trying iPtr = VarPtr(iArray) +  72
> (for that example) without success.  I have
> assumed my iPtr (declared as a Pointer) is an
> integer value that increases by 4 for each
> integer element, but I could be off the
> track.  Being "dangerous" does not unduly concern
> me - my computer won't blow up! I just need to
> move blocks of data back and forth quickly!
> Carl
>
>
> At 12:42 AM 26/01/2014, you wrote:
> >Le 25/01/2014 08:23, Carl Nilsson a écrit :
> > > G'day all:
> > > Linux has "memmove" and Windows has "MoveMemory".  How do I import or
> > > reference memcopy into Gambas?  I can see that I should be able to
> > > effect this function using stream Memory Read and Write, but it may
> > > not work as fast?  I need to use this many times
> > > Carl.
> > >
> >
> >Why do you need to copy memory? You should not, it's dangerous.
> >
> >--
> >Benoît Minisini
> >
>
> >------------------------------------------------------------------------------
> >CenturyLink Cloud: The Leader in Enterprise Cloud Services.
> >Learn Why More Businesses Are Choosing CenturyLink Cloud For
> >Critical Workloads, Development Environments & Everything In Between.
> >Get a Quote or Start a Free Trial Today.
> >
> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk
> >_______________________________________________
> >Gambas-user mailing list
> >Gambas-user at lists.sourceforge.net
> >https://lists.sourceforge.net/lists/listinfo/gambas-user
>
> Carl S Nilsson
> 137 Gordons Hill Road
> Lindisfarne, Tas.
> Australia 7015
>
> ------------------------------------------------------------------------------
> CenturyLink Cloud: The Leader in Enterprise Cloud Services.
> Learn Why More Businesses Are Choosing CenturyLink Cloud For
> Critical Workloads, Development Environments & Everything In Between.
> Get a Quote or Start a Free Trial Today.
>
> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk
> _______________________________________________
> Gambas-user mailing list
> Gambas-user at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gambas-user
>