Thanks Isaiah.
It works.
I also tried to pass Julia's system image to jl_init and with the little
help
of SetDllDirectory method it works properly when i try to run it in
console.
*******
using System.Runtime.InteropServices;
namespace ConsoleApplication1
{
class Program
{
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool SetDllDirectory(string lpPathName);
[DllImport("libjulia.dll")]
static extern void jl_init(string message);
[DllImport("libjulia.dll")]
static extern void jl_eval_string(string message);
static void Main(string[] args)
{
SetDllDirectory(@"c:\Users\SB\AppData\Local\Julia-0.3.0\bin\");
jl_init(@"c:\Users\SB\AppData\Local\Julia-0.3.0\bin\");
jl_eval_string("print(sqrt(2.0))");
}
}
}
*******
But when I try to run it directly in VS 2103 in (Debug/Release) I get
following error from jl_init:
"System.AccesViolationException.
Attempted to read or write protected memory. This is often an indication
that
other memory is corrupt."
Small piece from :
http://social.msdn.microsoft.com/Forums/en-US/8789ea67-fbc5-4a7b-a4eb-d4a8a050d5c1/attempt-to-read-or-write-protected-memory-this-is-often-an-indicating-that-other-memory-is-corrupt
"This issue shouldn't happen in managed code. The problem is typically
caused by some component (typically unmanaged, but can also be a bad
P/Invoke signature) that corrupts the program's memory."
I tried also to suppress this exception by disabling
"Tools menu ->Options -> Debugging -> General -> Suppress JIT optimization
on module load"
but with no success ?
Any ideas ?
Best regards.
Stefan.
On Wednesday, October 1, 2014 12:16:15 AM UTC+2, Isaiah wrote:
>
> The ">" indicates the cmd prompt working directory:
> ```
> C:\cmn\Julia-0.3.0>bin\ConsoleApplication2.exe
> 1.4142135623730951
> ```
> Otherwise, try passing the bin path as a char* to jl_init as suggested.
>
>
> On Tue, Sep 30, 2014 at 11:24 AM, Stefan Babinec <[email protected]
> <javascript:>> wrote:
>
>> I've copied exe file directly to julia's bin directory Isaiah.
>>
>> And I get the above mentioned error when I try to run it in the bin
>> directory.
>>
>>
>> On Tuesday, September 30, 2014 4:57:41 PM UTC+2, Isaiah wrote:
>>>
>>> Try running it from the Julia directory as `bin\CommandLine2.exe`. This
>>> is very much a minimal example; for general use, the bin directory should
>>> be passed as an argument to `jl_init`:
>>>
>>> https://github.com/JuliaLang/julia/blob/1ee440bee5035ccb33f82b8a45febd
>>> dd2f973baa/src/jlapi.c#L70-L73
>>>
>>> To go much further than this will really require to dig in to both
>>> jlapi.c and the general Julia source code. Be aware that dealing with type
>>> translation and garbage collection are both non-trivial. See also
>>> `examples/embedding.c` in the julia tree, and several previous discussion
>>> on the mailing list.
>>>
>>> On Tue, Sep 30, 2014 at 9:08 AM, Stefan Babinec <[email protected]>
>>> wrote:
>>>
>>>> Hi Isaiah.
>>>>
>>>> I tried and got this error:
>>>> "System image file " ?l\../lib/julia/sys.ji" not found"
>>>>
>>>> System Image sys.ji looks to be on his place and I have no problem
>>>> running Julia.
>>>>
>>>> Thanks.
>>>>
>>>>
>>>> On Tuesday, September 30, 2014 2:03:42 PM UTC+2, Isaiah wrote:
>>>>>
>>>>> I should mention that it is necessary to change the project target CPU
>>>>> from the default Any to x64 or x86 to match the libjulia architecture.
>>>>> On Sep 29, 2014 11:58 PM, "Isaiah Norton" <[email protected]> wrote:
>>>>>
>>>>>> I tried this some time ago during 0.2, so to make sure it still works
>>>>>> I made a minimal translation of the embedding example to C#:
>>>>>>
>>>>>> ```
>>>>>> using System;
>>>>>> using System.Runtime.InteropServices;
>>>>>>
>>>>>> namespace ConsoleApplication2
>>>>>> {
>>>>>> class Program
>>>>>> {
>>>>>> [DllImport("libjulia.dll")]
>>>>>> static extern void jl_init();
>>>>>> [DllImport("libjulia.dll")]
>>>>>> static extern void jl_eval_string(string message);
>>>>>>
>>>>>> static void Main(string[] args)
>>>>>> {
>>>>>> jl_init();
>>>>>> jl_eval_string("print(sqrt(2.0))");
>>>>>> }
>>>>>> }
>>>>>> }
>>>>>> ```
>>>>>>
>>>>>> I compiled this, copied the binary into `Julia-0.3.0\bin`, and it
>>>>>> works:
>>>>>>
>>>>>> ```
>>>>>> C:\cmn\Julia-0.3.0>bin\ConsoleApplication2.exe
>>>>>> 1.4142135623730951
>>>>>> ```
>>>>>>
>>>>>>
>>>>>> On Mon, Sep 29, 2014 at 4:11 PM, Tobias Knopp <
>>>>>> [email protected]> wrote:
>>>>>>
>>>>>>> yep, I have done this (mostly for fun) before and it works. One
>>>>>>> needs some experience with P/Invoke of course but this is no magic but
>>>>>>> similar to our ccall.
>>>>>>>
>>>>>>> Cheers,
>>>>>>>
>>>>>>> Tobi
>>>>>>>
>>>>>>> Am Montag, 29. September 2014 20:52:10 UTC+2 schrieb Stefan
>>>>>>> Karpinski:
>>>>>>>>
>>>>>>>> I assume that you can call C libraries from .NET, right? The C
>>>>>>>> library for Julia is libjulia – how to call it from C is explained in
>>>>>>>> the
>>>>>>>> embedding docs, calling it from .NET should be similar.
>>>>>>>>
>>>>>>>>
>>>>>>>> > On Sep 29, 2014, at 12:37 PM, Guido De Bouver <
>>>>>>>> [email protected]> wrote:
>>>>>>>> >
>>>>>>>> > I have not found the C# examples, but I have not looked for them.
>>>>>>>> Sorry for that.
>>>>>>>> >
>>>>>>>> > So, any help on this, how could we call Julia from .NET ????
>>>>>>>> >
>>>>>>>>
>>>>>>>
>>>>>>
>>>
>
