I remember a post recently about improved performance when packing many
function arguments into an immutable for function calling. Is this
(jl_call1 vs jl_call) the reason?
On Tuesday, June 30, 2015 at 12:32:44 PM UTC-4, Isaiah wrote:
>
> cool. you can go up to jl_call3. after that you need to pack the args in a
> jl_value_t** and use the general form `jl_call(f, args, nargs)` ... there
> should be a lot of examples how to do that if you grep through src/ for
> "jl_call".
>
> On Tue, Jun 30, 2015 at 12:26 PM, Kostas Tavlaridis-Gyparakis <
> kostas.t...@gmail.com <javascript:>> wrote:
>
>> Ok, thanks a lot it did work just fine!
>> just one more quick question, if I got it right jl_call1 is for adding
>> one input argument to the functions and jl_call2 is for adding two input
>> arguments to the function.
>> For adding more arguments I continue in the same way? For instance for 4
>> arguments I just use use jl_call4?
>> Or what I am saying is completely mistaken?
>>
>> On Tuesday, June 30, 2015 at 5:58:18 PM UTC+2, Isaiah wrote:
>>>
>>> try
>>>
>>> jl_value_t * mod = (jl_value_t*)jl_eval_string("mymodule");
>>> jl_function_t * func = jl_get_function((jl_module_t*)mod,"myfunction");
>>>
>>> (jl_new_module creates a new module -- that's not what you want, because
>>> the module containing your function is created when you eval "yourfile.jl")
>>>
>>> On Tue, Jun 30, 2015 at 11:47 AM, Kostas Tavlaridis-Gyparakis <
>>> kostas.t...@gmail.com> wrote:
>>>
>>>> Ok, so first of all thanks a lot for all the help so far.
>>>> So, now I try to follow the instructions and I write the following
>>>> three lines of code inside C++:
>>>>
>>>> jl_load("mymodule.jl");
>>>> jl_value_t * mod = jl_eval_string("mymodule");
>>>> jl_function_t * func =
>>>> jl_get_function(jl_new_module(mod),"myfunction");
>>>>
>>>> (the jl file and the module itself have the same name in this case
>>>> mymodule)
>>>> But I do receive the following 2 errors when Eclipse compiles:
>>>>
>>>> 1) error: invalid conversion from ‘void*’ to ‘jl_value_t* {aka
>>>> _jl_value_t*}’ [-fpermissive] (this is referring to jl_value_t * mod =
>>>> jl_eval_string("mymodule");)
>>>>
>>>> 2) error: cannot convert ‘jl_value_t* {aka _jl_value_t*}’ to ‘jl_sym_t*
>>>> {aka _jl_sym_t*}’ for argument ‘1’ to ‘jl_module_t*
>>>> jl_new_module(jl_sym_t*)’ (this referring to jl_function_t * func =
>>>> jl_get_function(jl_new_module(mod),"myfunction");)
>>>>
>>>>
>>>> >No problem, no stupid questions. However, I would suggest that you
>>>> might want to spend some time getting really familiar with Julia by
>>>> itself,
>>>> before trying to use the embedding API. It might save a lot of time in the
>>>> long run.
>>>>
>>>> You are totally right on this, I am just trying first to check if it is
>>>> doable to do some combinations between C++ in Eclipse and Julia (such as
>>>> using functions written in
>>>> Julia inside a C++ routine etc), because I am planning to connect a
>>>> large-scale C++ with Julia and before starting to studying Julia in full
>>>> detail and start writing proper
>>>> code was thinking to do some small tests in connectivity between the
>>>> two. But it turns out that I don't know some very basic things to finish
>>>> this task.
>>>>
>>>>
>>>> On Tuesday, June 30, 2015 at 5:32:53 PM UTC+2, Isaiah wrote:
>>>>>
>>>>> Sorry but I am not sure what you mean and how to "*evaluate your .jl
>>>>>> file defining the module first*"?
>>>>>
>>>>>
>>>>> Ok, say you have a file:
>>>>>
>>>>> ```
>>>>> module mymod
>>>>> function foo() ... end
>>>>> end
>>>>> ```
>>>>>
>>>>> At the Julia prompt you would do:
>>>>>
>>>>> julia> include("myfile.jl")
>>>>>
>>>>> And then you have the module `mymod` available in the global
>>>>> namespace. In C you can do the equivalent with:
>>>>>
>>>>> `jl_load("myfile.jl")`
>>>>>
>>>>> I am really new to Julia so maybe the question sounds really stupid,
>>>>>> sorry for that
>>>>>
>>>>>
>>>>> No problem, no stupid questions. However, I would suggest that you
>>>>> might want to spend some time getting really familiar with Julia by
>>>>> itself,
>>>>> before trying to use the embedding API. It might save a lot of time in
>>>>> the
>>>>> long run.
>>>>>
>>>>> On Tue, Jun 30, 2015 at 10:54 AM, Kostas Tavlaridis-Gyparakis <
>>>>> kostas.t...@gmail.com> wrote:
>>>>>
>>>>>> Sorry but I am not sure what you mean and how to "*evaluate your .jl
>>>>>> file defining the module first*"?
>>>>>> (I am really new to Julia so maybe the question sounds really stupid,
>>>>>> sorry for that)
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Tuesday, June 30, 2015 at 4:28:54 PM UTC+2, Isaiah wrote:
>>>>>>>
>>>>>>> `jl_new_module` creates a new module. You must evaluate your .jl
>>>>>>> file defining the module first, then to get a reference to the module
>>>>>>> do:
>>>>>>>
>>>>>>> `jl_value_t* mod = jl_eval_string("MyModName");
>>>>>>>
>>>>>>> Then you can pass "mod" as the argument to `jl_get_function`.
>>>>>>>
>>>>>>> On Tue, Jun 30, 2015 at 10:16 AM, Kostas Tavlaridis-Gyparakis <
>>>>>>> kostas.t...@gmail.com> wrote:
>>>>>>>
>>>>>>>> Hello,
>>>>>>>> I am trying to write some function in Julia which I will be able to
>>>>>>>> call inside my C++ projects in Eclipse.
>>>>>>>> In the documentation there is this
>>>>>>>> <http://julia-demo.readthedocs.org/en/latest/manual/embedding.html#calling-julia-functions>
>>>>>>>>
>>>>>>>> example on how to call a function of julia from an existing module.
>>>>>>>> So, what I have done was to create my own module where inside I
>>>>>>>> included my function and then my
>>>>>>>> understanding is that I should be using "jl_new_module(jl_sym_t
>>>>>>>> *name);" instead of jl_base_module.
>>>>>>>> But I am not sure (in case my assumption that this is the correct
>>>>>>>> command is true) how to proper use
>>>>>>>> it's syntax, as what I am trying is:
>>>>>>>>
>>>>>>>> jl_function_t * func =
>>>>>>>> jl_get_function(jl_new_module(mymodule),"myfunction");
>>>>>>>>
>>>>>>>> and I tried instead of mymodule also mymodule.jl and "mymodule" and
>>>>>>>> "mymodule.jl" and in all the attempts I
>>>>>>>> recieve an error that:
>>>>>>>>
>>>>>>>> mymodule was not declared in this scope
>>>>>>>>
>>>>>>>>
>>>>>>>> Let me note beforehand that the module is being stored globaly as when
>>>>>>>> I run julia on the terminal I can use it
>>>>>>>> through the comand using mymodule.
>>>>>>>> Still maybe I am trying to use the wrong command or sth, so if there
>>>>>>>> is any suggestion I would be really greatful
>>>>>>>> to hear it.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>
>>>
>
