[Mono-dev] mono_add_internal_call to mscorlib method

[Alexander Köplinger]

You're looking at the wrong implementation of Environment.cs. The one we're
using is still Mono's implementation (as opposed to the MS referencesource
one you're looking at):
https://github.com/mono/mono/blob/37bb54b503f3f8c948955c577687d4233e950cb5/mcs/class/corlib/System/Environment.cs#L472

It ends up calling into the runtime to
https://github.com/mono/mono/blob/37bb54b503f3f8c948955c577687d4233e950cb5/mono/metadata/icall.c#L6942-L6949
.

Anyway, this shouldn't matter as you're not supposed to add an icall for
that yourself, it's provided by Mono. From a quick reading of the code
there's no way this can return null so I'm a bit confused, but I'll let the
runtime experts weigh in :)

- Alex

2016-06-08 21:26 GMT+02:00 nicob <nicolasbotto at gmail.com>:

> Hi, I'm trying to use the Skype Sdk in mono embedded. I'm able to load the
> assemblies but when I try to create a instance of a class that internally
> calls System.Environment.GetCommandLineArgs it throws an exception. After
> digging a bit I found out the System.Environment.GetCommandLineArgs
> internally invokes:
>
> private static extern string[] GetCommandLineArgsNative();
>
> this method is returning null therefore it fails. I'm trying to add an
> internal call to the extern method using:
>
> mono_add_internal_call ("System.Environment::GetCommandLineArgsNative",
> (void*)GetCommandLine);
>
> I also tried:
>
> mono_add_internal_call
> ("mscorlib.System.Environment::GetCommandLineArgsNative",
> (void*)GetCommandLine);
>
> but neither of them seem to work as my C++ function is never invoked.
>
> C++ function:
> MonoArray* GetCommandLine()
> {
>     MonoDomain* domain = mono_domain_get();
>     MonoArray* array = mono_array_new(domain, mono_get_string_class(), 1);
>
>     MonoString* ret = mono_string_new(domain, "yeah!");
>     mono_array_setref(array, 0, ret);
>
>     return array;
> }
>
>
> Am I missing something?
>
> Thanks in advanced.
>
>
>
> --
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