• bobef (8/8) Aug 09 2004 very soon mobile devices will have the power of today's
• Jarrett Billingsley (4/4) Aug 09 2004 if someone writes a compiler for it, then yes, it will move to mobile
• teqDruid (4/9) Aug 10 2004 And with GDC, neither will D! :) With the GCC backend, D is
• Ilya Minkov (21/27) Aug 10 2004 How is memory managed on mobile phones?
• Lars Ivar Igesund (7/11) Aug 10 2004 I remember doing some Java ME programming on the first Siemens with Java...
• Martin (13/21) Sep 12 2004 Many mobiles run Java VM. If we can make D to compile into java bytecode...

bobef <bobef_member pathlink.com> writes:

very soon mobile devices will have the power of today's
pc's... i think it is clear to anyone that pc's we are 
using today are already obsolete design... without
making any more predictions about the future will
mobile device programming be possible with d (ot if it is
now)? and if not i think this may kill d...

(btw i don't like mobiles.. but people do, so please do not 
judge me for this opinion)

"Jarrett Billingsley" <kb3ctd2 yahoo.com> writes:

if someone writes a compiler for it, then yes, it will move to mobile
phones.

i mean look at C ;)  it hasn't had much problem moving to just about every
platform in existence.

teqDruid <me teqdruid.com> writes:

On Mon, 09 Aug 2004 21:52:29 -0400, Jarrett Billingsley wrote:

 if someone writes a compiler for it, then yes, it will move to mobile
 phones.
 
 i mean look at C ;)  it hasn't had much problem moving to just about every
 platform in existence.

And with GDC, neither will D! :)  With the GCC backend, D is
(theoretically) just as portable. The only problem is the library, but If
phobos is POSIX complaint, then it should be portable as well.

Ilya Minkov <minkov cs.tum.edu> writes:

bobef schrieb:

 very soon mobile devices will have the power of today's
 pc's... i think it is clear to anyone that pc's we are 
 using today are already obsolete design... without
 making any more predictions about the future will
 mobile device programming be possible with d (ot if it is
 now)? and if not i think this may kill d...

How is memory managed on mobile phones?

What i can think of, is compiling to Java (or perhaps .NET?) bytecode, 
which can then be executed on Java mobiles - just then it will loose 
many security and performance advantages of D. And if Java's memory 
management works on the target device, then i bet one could get D to 
work perfectly well in a native mode as well, though effort might be too 
big for an individual.

It just puzzles me how memory on such tiny devices is managed. The 
premise of efficient Garbage Collection is that the device has many 
times more memory than it needs on average. Does anyone know how it 
works on mobiles?

I wonder because it might be interesting to get D to run on a Dreamcast, 
and do stuff which uses it to the limit - including CPU's memory, of 
which it has 16 megabytes.

Apart from memory management, i don't see any problem using D on limited 
devices. It is even possible now with GNU D Compiler, which should work 
on many 32-bit devices supportd by GCC. A .NET compiler has also been 
written. A compiler to C for most existing compilers is possible, but no 
work has been done.

-eye

Lars Ivar Igesund <larsivar igesund.net> writes:

Ilya Minkov wrote:

 It just puzzles me how memory on such tiny devices is managed. The 
 premise of efficient Garbage Collection is that the device has many 
 times more memory than it needs on average. Does anyone know how it 
 works on mobiles?

I remember doing some Java ME programming on the first Siemens with Java 
support (a prototype of the SL45 I think). Just a couple of small menus 
doing some logic, and the heap was full. Especially string handling were 
killing it. I suppose the handling has improved since then (late 2001) 
and the size of available memory increased, though.

Lars Ivar Igesund

Martin <Martin_member pathlink.com> writes:

Many mobiles run Java VM. If we can make D to compile into java bytecode, then

nothing impossible. 
I personally would like to use such a tool very much. I need to write programs
for Java VM but I hate Java programming language.
(Don't take it personally Java fans, but it is just not for me)
So D->Java compiler is something that I need very much. When I have more time,
then maybe I try to make something like that. But I don't know when I have such
time, maybe next summer, maybe even later. 

So if anyone has time, then make a D->Java VM compiler or D->Java->Java VM
compiler. The speed is not so important, as long it works.

Martin



In article <cf8iv8$u1s$1 digitaldaemon.com>, bobef says...
very soon mobile devices will have the power of today's
pc's... i think it is clear to anyone that pc's we are 
using today are already obsolete design... without
making any more predictions about the future will
mobile device programming be possible with d (ot if it is
now)? and if not i think this may kill d...

(btw i don't like mobiles.. but people do, so please do not 
judge me for this opinion)