Jeremy,
Please remember to respond to list, not just me. I figured out your
problem. You are not marking your C# methods with the [MethodImplAttribute(
MethodImplOptions.InternalCall)] attribute.
class MonoEmbed
{
[MethodImplAttribute(MethodImplOptions.InternalCall )]
extern public static string gimme();
[MethodImplAttribute(MethodImplOptions.InternalCall )] // you need this
extern public static int gimme2();
}
Note that your code above does not even compile with mcs or gmcs; they
report an error while csc just gives a warning. You must be compiling
test.cs in VS. That is the bug; I filed one for this #80735. If you add the
correct attribute all your calls should be fine.
Thanks,
Jonathan
On 2/5/07, Jeremy <[EMAIL PROTECTED]> wrote:
Ok, taking the embed example in teste.c, which has this c bound function
static MonoString*gimme ()
{
return mono_string_new (mono_domain_get (), "All your monos are belong
to us!");
}
static int gimme2 () // I added this
{
return 10;
}
and below uses
mono_add_internal_call ("MonoEmbed::gimme", gimme);
mono_add_internal_call ("MonoEmbed::gimme2", gimme2); // I added this
and here's my seperate test prog,
// Class1.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.CompilerServices;
class MonoEmbed
{
[MethodImplAttribute(MethodImplOptions.InternalCall )]
extern public static string gimme();
extern public static int gimme2(); // I added this
}
namespace Test
{
public class Class1
{
public static void Main(string[] args)
{
System.Console.WriteLine("Hello From Test App");
System.Console.WriteLine(MonoEmbed.gimme());
System.Console.WriteLine(MonoEmbed.gimme2());
}
}
}
This test app works as expected when just calling gimme(), which is what
the example originally had, but I guess I'm doing something wrong with my
additional function gimme2, because Mono crashes with the above line that
calls gimme2().
I'm taking a wild guess that I need to wrap even primitive types somehow,
but I can't find any documentation for that. I also attempted to make gimme2
like so
static void gimme2 (MonoString*str), but it too crashed.
Even setting gimme2 as a void function that takes no parameters crashes.
It's like the only variation that works is the one it comes with. I must be
doing something horribly wrong.
I added the mono_add_internal_call ("MonoEmbed::gimme2", gimme2); like the
default gimme function was set up, and I also changed the Embed lines in the
C# code to match the function signature, ie
class MonoEmbed
{
[MethodImplAttribute(MethodImplOptions.InternalCall)]
extern public static string gimme();
extern public static void gimme2();
}
and still no luck.
The error is a popup box with an ok button that says:
** ERROR **: file .\mono\metadata\loader.c: line 1969: assertion failed:
(loc) aborting
So in summary, I have the teste.c example included with mono, working fine
by default. Add another bound function and it doesn't work anymore.
Any help is greatly appreciated. I compiled libmono and teste.c example,
as well as my simple test app is msvc 2005.
On 2/5/07, Jon Chambers < [EMAIL PROTECTED]> wrote:
>
> Lots of people are embedding mono. Please post all of your code,
> including the C#, for more help.
>
> Thanks,
> Jonathan
>
> On 2/5/07, Jeremy < [EMAIL PROTECTED]> wrote:
>
> > It's a static method I guess, exactly like the existing function in
> > the example. I wish I could figure out why it's not working for anything
> > other than the example function they provide.
> >
> > Is noone using the embedded mono stuff?
> >
> > On 2/3/07, Jonathan Pryor < [EMAIL PROTECTED]> wrote:
> > >
> > > On Fri, 2007-02-02 at 09:53 -0800, Jeremy wrote:
> > > > I've gotten the example to work, however the example shows the
> > > case of
> > > > a returning mono string. I'm getting crashes in Mono when I
> > > attempt to
> > > > define additional functions for the assembly to call back into C
> > > > with.
> > > >
> > > > The example shows this
> > > >
> > > > static MonoString *Sample ()
> > > > {
> > > > return mono_string_new (mono_domain_get (), "Hello!");
> > > > }
> > > >
> > > > which works fine, but I can't seem to get functions that take
> > > arguments working.
> > > >
> > > > for example:
> > > >
> > > > static MonoString* gimme2 (MonoString*a)
> > > > {
> > > > return mono_string_new (mono_domain_get (), "Hello!");
> > > > }
> > > >
> > > > even though I'm not even using the parameter, simply defining
> > > this,
> > > > adding it just like mono_add_internal_call, and likewise in the
> > > > assembly, I get a crash in mono.
> > > >
> > > > Is it possible for assembly->c functions to take parameters?
> > >
> > > Just a guess, but is your C# method an instance method or a static
> > > method? If it's an instance method, you need a `this' pointer in
> > > your C
> > > code, e.g.
> > >
> > > static MonoString*
> > > gimme2 (MonoObject *this, MonoString *a)
> > > {
> > > return mono_string_new (mono_domain_get (),
> > > "Hello!");
> > > }
> > >
> > > - Jon
> > >
> > >
> > >
> >
> > _______________________________________________
> > Mono-list maillist - [email protected]
> > http://lists.ximian.com/mailman/listinfo/mono-list
> >
> >
> >
>
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