[eclipse-clp-users] Copying Eclipse Data / Re: OutOfProcessEclipse Error

From: Christian Wirth <tyrion_at_...215...>
Date: Wed, 23 Jun 2010 15:11:54 +0200
I think i found the error now, but i don't know how to fix it.
The problem is, as mentioned, that i can't do the preparation for every 
solver because they take too long. I'm currently copying the information 
via java, but that destroys the variable information, and they have to 
be preserved ?
How to copy data in complete ?

Christian Wirth schrieb:
> A code snippet is difficult, the prolog source is very complex. I added 
> something, but i don't think it will provide any help.
> The computation does not take long (less then a second) and the problem 
> gets thrown after several of those calcs. It's thrown by the eclipse rpc 
> call, hence it should arise during computation.
> Is it maybe possible to log the error ?
> Additionally, i just tried it on some other machines, and the error gets 
> thrown earlier if less RAM is available (but below physical limit) ...
>
> best regards
>
> The calling java code:
>             eclipse.rpc("use_module(gorgon_player)");
>             CompoundTerm query = new 
> CompoundTermImpl("determine",state,lastMoveList,player,null);
>             result = eclipse.rpc(query);
>             eclipse.rpc("use_module(prolog_reasoner)");
>
> The called predicate (the main part,determine itself is more less a 
> findall over matchMoveTree):
> It matches a list of edge data to tranverse a tree.
>
> matchMoveTree(Player,Move,[],State,Tree,Effect) :- 
> Tree=node{edge:Edges,dat:Data},
>                                                                         
>          (Data==[]->
>                                                                         
>                             Effect=[[],[unknown]];
>                                                                         
>                             matchMove(Player,Move,State,Data,Effect)).
> matchMoveTree(Player,Move,[Current|Rest],State,Tree,Effect) :- 
> Tree=node{edge:Edges,dat:Data},
>                                                                         
>                              match(Current,Candidate,Edges,NextNode),
>                                                                         
>                              
> matchMoveTree(Player,Move,Rest,State,NextNode,Effect).
>
> match(Current,Candidate,Edges,NextNode) :- 
> member(edge{move:Candidate,node:NextNode},Edges),
>                                                                        
> (Candidate==[]->
>                                                                         
>                             (!,false);
>                                                                         
>                             Current=Candidate).
>
> Wit Jakuczun schrieb:
>   
>> 2010/6/22 Christian Wirth <tyrion@...215... 
>> <mailto:tyrion@...215...>>
>>
>>     I started now using OutOfProcessEclipse to run multiple,
>>     idenpendent eclipse instances.But i get an error when running
>>     complex games:
>>
>>  
>>
>>     java.net.SocketException: Connection reset
>>
>>     The error gets thrown when calling a predicate that get's called
>>     alot .. also before the error. So it seems somewhat runtime
>>     dependent. I already tried increasing the stack sizes, but that
>>     didn't help. The RAM usage is a bit higher then expected but still
>>     far below my physical limit.
>>
>>     What could be the reason for this connection reset ? Or is there a
>>     way to get the reason from eclipse for the reset ?
>>
>> How long does computation takes? The connection can be reset after 
>> some timeout... When do you experience this exception: during 
>> computation? If you could provide us with a code snippet it could be 
>> more helpful.
>>  
>> Best regards
>> -- 
>> [ Wit Jakuczun  http://www.linkedin.com/in/jakuczunwit  ]
>>
>>
>>      
>>
>>     
>
>
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Received on Wed Jun 23 2010 - 13:12:03 CEST

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