[erlang-questions] Copy function from one Module to another

Tyron Zerafa <>
Tue Aug 14 18:20:20 CEST 2012


I want to implement code migration where a user just will be able to call
migrate(RemoteNode, Fun) and that local fun will end up on the RemoteNode.
Thus this needs to be generic. I cannot assume that:
1) All functions within the module are going to be used - transferring code
which will not be used will result in useless bandwidth costs.
2) All functions required are within a single module

I was going to perform a static analysis of the function to be migrated and
transfer only the functions it depends on.

On Tue, Aug 14, 2012 at 6:09 PM, Fred Hebert <> wrote:

>  Why do you want to do this, instead of, for example, just sending the
> module to the other node?
>
> {Mod, Bin, File} = code:get_object_code(Mod),
> rpc:call(Node, code, load_binary, [Mod, File, Bin]).
>
> or alternatively use rpc:multicall(Nodes) for many nodes and doing the
> same.
>
>
> On 12-08-14 11:15 AM, Tyron Zerafa wrote:
>
>
> Hey Jesse
>     I need something stronger than just import. I need to put a bunch of
> functions from different modules into a single one and transfer this to a
> remote node. Then I want to be able to use these functions from the remote
> node.
> If I simply use import, I will not be able to use them on the remote node
> without explicitly transferring all the modules to which the functions
> belong to.
>
>
> On Tue, Aug 14, 2012 at 5:10 PM, Jesse Gumm <> wrote:
>
>> That sounds like you're looking for
>>
>> -import(Module, Functions).
>>
>> http://www.erlang.org/doc/reference_manual/modules.html
>>
>> --
>> Jesse Gumm
>> Owner, Sigma Star Systems
>> 414.940.4866 || sigma-star.com || @jessegumm
>>  On Aug 14, 2012 9:56 AM, "Tyron Zerafa" <> wrote:
>>
>>>  Hey all,
>>>     Is there any mechanism in Erlang which I can use to copy functions
>>> from one module to another? So, if I have module *A* containing
>>> functions *a*, *b* and *c*, is there any way in which I can copy *a* to
>>> module B?
>>>
>>>  Thanks
>>> Tyron
>>>
>>>
>>>  _______________________________________________
>>> erlang-questions mailing list
>>> 
>>> http://erlang.org/mailman/listinfo/erlang-questions
>>>
>>>
>
>
>  --
> Best Regards,
> Tyron Zerafa
>
>
>
> _______________________________________________
> erlang-questions mailing ://erlang.org/mailman/listinfo/erlang-questions
>
>
>


-- 
Best Regards,
Tyron Zerafa
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