Interfacing via Java Native Interface
John Colvin
john.loughran.colvin at gmail.com
Wed Oct 16 03:41:34 PDT 2013
On Wednesday, 16 October 2013 at 10:11:32 UTC, Andrew wrote:
> Hello there!
> I've decided to learn a bit of D, as I am currently Android
> Developer (mostly C++ <- JNI -> Java), I'm trying to create a D
> shared library which exports function (with extern (C)) for
> invocation from Java.
> My .d file contains only a single function returning an int,
> .java calls this function several times.
> This approach only works if d-function is trivial, e.g. it's
> not using any D functionality (I believe that it is related to
> GC and memory allocation).
> For example, if my d-function just returns some constant
> integer, java side receives it. core.stdc.stdio also works and
> allows console output, but it's not the case with
> std.stdio.writeln and similar functions.
> If I use any d-specific functions my program crashes while
> calling native code with some weird message like following:
> "Invalid memory access of location 0x0 rip=addr".
>
> It seems like D is not initialized at all, maybe there is some
> internal function like dinit() which I can call in order to
> activate everything?
>
> Thanks.
Try using Runtime.init() from core.runtime
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