On 21/11/2021 11:44 pm, Eric Bresie wrote:
At the time of phoneME there was also some licensing concerns if it was
to be used on a specific (phone) platform which resulted in a lot of
fragmentation in the JavaME market with each platform having to
implement their own native flavor and consider licensing fees.
I believe the idea with openjdk and the assorted profiles and modularity
related changes that phoneME (java ME) more or less became OBE open
source jdk. The rational being rather than maintain a Java and JavaME
flavor of code base, have a single Java based (with modularize compact
profile running on embedded platforms.
Not quite. Java ME and running Java on phones was a completely different
operating space. What the Compact Profiles did was allow for Java SE
Embedded to be brought into the fold of OpenJDK (which was Java SE). It
was still targeted at high-end "embedded" devices, not the small devices
that Java ME targeted. For SE on other devices the Mobile project was
formed:
http://openjdk.java.net/projects/mobile/
David
-----
From
https://www.electronicdesign.com/technologies/dev-tools/article/21801464/11-myths-about-embedded-java
<https://www.electronicdesign.com/technologies/dev-tools/article/21801464/11-myths-about-embedded-java>
“ In JDK 8, steps were taken to address this with the introduction of
three compact profiles, the smallest of which only requires a little
over 10 MB of storage. In JDK 9, scheduled for release in Spring 2017,
the JDK will be fully modularized so that application developers can
select only the modules they need to run their application. ”
On a related note
https://minexew.github.io/2021/04/10/phoneme.html
<https://minexew.github.io/2021/04/10/phoneme.html>
Eric
On Fri, Nov 19, 2021 at 6:05 AM Thomas Stüfe <thomas.stu...@gmail.com
<mailto:thomas.stu...@gmail.com>> wrote:
On Fri, Nov 19, 2021 at 12:25 PM Magnus Ihse Bursie
<magnus.ihse.bur...@oracle.com
<mailto:magnus.ihse.bur...@oracle.com>> wrote:
On 2021-11-17 14:27, Thomas Stüfe wrote:
On Wed, Nov 17, 2021 at 1:57 PM Magnus Ihse Bursie
<magnus.ihse.bur...@oracle.com
<mailto:magnus.ihse.bur...@oracle.com>> wrote:
On 2021-11-16 07:19, Thomas Stüfe wrote:
On Mon, Nov 15, 2021 at 11:09 PM David Holmes
<david.hol...@oracle.com
<mailto:david.hol...@oracle.com>> wrote:
On 16/11/2021 12:06 am, gnufan42 wrote:
> David Holmes wrote:
>> I'd say it is technically impossible to port
OpenJDK to DOS as you do
>> not have any of the necessary operating system
support for threads,
>> synchronization, virtual memory, ....
>
> Well, these difficulties are all overcame by
the DJGPP project. They use DPMI to let the code runs
in 32-bit protected mode, they implemented a lot of
POSIX functions, including pthread. Otherwise I won't
be trying.
I'd never heard of DJGPP but the pthread support
still seems limited -
hard to find an accurate current description of what
is actually
supported. So I would not say these difficulties are
overcome :) This
will be an exceedingly complex and challenging project.
Cheers,
David
I still think that the CVM (JavaME) may be better suited
for the task. From the time I worked with it I remember
that it was targeted to low-memory devices, its C code
base was extremely portable, it was very configurable
(important for embedded) etc. We ran it with green
threading (like Loom today) and that worked. OpenJDK OTOH
relies on native posix threads, and there is no easy way
around that.
I seemed to remember that Sun open-sourced JavaME in
2006. But I could not find the project page.
https://en.wikipedia.org/wiki/Java_Platform,_Micro_Edition
<https://en.wikipedia.org/wiki/Java_Platform,_Micro_Edition>
https://en.wikipedia.org/wiki/PhoneME
<https://en.wikipedia.org/wiki/PhoneME>
PhoneME website seems defunct now. Does anyone know what
happened with that project?
Wikipedia has links to archive.org <http://archive.org>.
https://archive.org/details/phoneme-svn.dump
<https://archive.org/details/phoneme-svn.dump> for the
source code.
/Magnus
Ah, I missed that. But seems this project is not actively
maintained anymore. Pity.
Yes, it's a shame. I felt sorry for the source code, just lying
rotting there as a SVN dump on archive.org <http://archive.org>,
so I installed subversion, made a few scripts, and converted it
to git and put it on Github. [1]
That won't bring active development back, but at least the
source code is accessible for archaeological reasons. And maybe
it'll be enough to get someone to bring it back to life...
/Magnus
[1] https://github.com/magicus/phoneME
<https://github.com/magicus/phoneME>
This is awesome, Magnus! And with full commit history too.
So many memories :)
--
Eric Bresie
ebre...@gmail.com <mailto:ebre...@gmail.com>
