[contestms] Re: Support for other programming languages
- From: Damien Leroy <damien.leroy@xxxxxxxx>
- To: "contestms-dev@xxxxxxxxxxxxx" <contestms@xxxxxxxxxxxxx>
- Date: Mon, 18 Nov 2013 23:09:33 +0100
Does anybody already know one of these guys (from USACO, COCI) ? I can already
contest people I know who are using Java in their contest.
A part of the work will also be to adapt the current architecture to allow, in
a clean way, java to bypass/replace the current compile-isolate way of
executing tasks. It might require some care to ensure we do not add complexity
in the architecture and cause trouble in the long term.
Damien
On 17 Nov 2013, at 22:30, Luca Wehrstedt <luca.wehrstedt@xxxxxxxxx> wrote:
> Java isn't supported by isolate [1] because it's heavily threaded. I don't
> know JVM policies, but we should probably investigate in that direction.
> We could try to contact USACO admins: as they support Java they could tell us
> how they do it. COCI has it too, I think.
>
> Luca
>
> [1] http://www.ucw.cz/moe/
>
>
> On Sun, Nov 17, 2013 at 9:09 PM, Damien Leroy <damien.leroy@xxxxxxxx> wrote:
> Hi Stefano,
> Great work, I was already following and deploying your development from your
> fork. I will try to test the CMS with our previous contests, but probably not
> in the next days.
> Java may require some additional changes to the cms as I don’t think it is
> possible to strip the file extension (class or jar) and execute it. Also,
> isolate should maybe be replaced by the jvm policies.
>
> Cheers,
> Damien
>
> On 17 Nov 2013, at 20:39, Stefano Maggiolo <s.maggiolo@xxxxxxxxx> wrote:
>
>> Update: Python support is already in the repo, PHP will be soon there. I
>> don't have much (read: any) experience with these languages in a contest
>> environment, so please be careful with edge cases and especially cheating.
>> If you have the necessary data, I'd suggest to rerun a previous contest with
>> CMS.
>>
>> I will be a bit busy in the forthcoming weeks, maybe Victor can add Java
>> support? :)
>>
>> Cheers,
>> Ste
>>
>>
>> On Tue Nov 05 2013 at 7:35:01 PM, Damien Leroy <damien.leroy@xxxxxxxx> wrote:
>> Hi Stefano,
>> Sorry for answering so late, I was on holidays.
>> Actually, there are two main parts, adding these languages to the platform
>> itself and executing the program inside the sandbox.
>> From what I read, it should be easy for some of you to add the languages to
>> the platform, if someone can work on this, it is more than welcome.
>> For the sandbox, I can work / help on it, and there are many alternatives to
>> sandboxing these languages if “isolate” does not fit. Java should be able to
>> run by setting the appropriate restriction for the JVM.
>>
>> And to answer your previous question, I mainly need batch tasks.
>>
>> Damien Leroy
>> beOI VZW/ASBL
>>
>> On 04 Nov 2013, at 13:02, Stefano Maggiolo <s.maggiolo@xxxxxxxxx> wrote:
>>
>>> On Mon Nov 04 2013 at 10:53:36 AM, Víctor Aravena
>>> <victor.aravena@xxxxxxxxxxx> wrote:
>>>
>>> Hello. My name is Víctor Aravena and I joined the team technical support
>>> IOI 2013 Chile. Thanks for add python. We need only batch/programming.
>>> Other question If we would like add Java. How we can participate in
>>> programing?
>>>
>>> Hi Victor!
>>>
>>> I'm currently working on the configurability of languages and on adding
>>> Python, PHP and Java. It's not a complicated process, but the main unknown
>>> is (as Gio said) whether the interpreters will create trouble to the
>>> sandbox.
>>>
>>> Something that would be very useful is if you could provide Java programs
>>> similar to what we have for the other languages in cmstestsuite/code.
>>>
>>> Another useful thing in that directory would be to add (for all languages)
>>> some missing failure cases: for example, submissions that try to access
>>> files that they should not access and out of memory submissions.
>>>
>>> If you want to do this, the best way is to work in git and send us a patch
>>> wither with git format-patch, or through github. Otherwise, an archive with
>>> all those file will do too.
>>>
>>> Thank you!
>>> Ste
>>>
>>>
>>
>
>
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