Re: Example with boost::intrusive_ptr and Java ?

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Hello,

for the record, my issue came from the fact that I was using the wrong name=
 as
an argument to the intrusive_ptr macro. Writing
`%intrusive_ptr(simgrid::s4u::Activity)` instead (i.e., using the fully
qualified name of the type) fixed my issue. The generated code now compiles=
.

So it was my fault, and I'm doing this email for the next one doing this
mistake, as it took me a while to pinpoint my bug.

The example in Examples/test-suite/java/li_boost_intrusive_ptr_runme.java i=
s a
bit complex (as it also tests internal stuff which are not interesting to
regular users), but it's helpful when you finally understand it.

Thanks for the fish,
Mt

Le vendredi 15 novembre 2024 =C3=A0 01:34 +0100, Martin Quinson a =C3=A9cri=
t=C2=A0:
> Hello there,
>=20
> I'm trying to generate the bindings of a library that heavily rely on
> boost::intrusive_ptr internally. My swig file reads:
>=20
> %include <boost_intrusive_ptr.i>
> %intrusive_ptr(Activity)
> %ignore intrusive_ptr_add_ref;
> %ignore intrusive_ptr_release;
>=20
> but the compilation of the generated file fails as follows:
>=20
> simgrid_java_wrap.cxx: In function =E2=80=98void
> Java_org_simgrid_s4u_simgridJNI_delete_1Activity(JNIEnv*, jclass, jlong)=
=E2=80=99:
> simgrid_java_wrap.cxx:1031:22: error: =E2=80=98smartarg1=E2=80=99 was not=
 declared in this
> scope
> =C2=A01031 |=C2=A0=C2=A0 (void)arg1; delete smartarg1;
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 ^~~~~~~~~
>=20
> This error seem to come from=C2=A0
> https://github.com/swig/swig/blob/master/Lib/java/boost_intrusive_ptr.i#L=
21
> but I fail to understand what's wrong here. The full swig file is attache=
d
> and
> the code I'm trying to bind is https://github.com/simgrid/simgrid/=C2=A0b=
ut I do
> not
> expect anyone to debug my code directly.
>=20
> Instead, I'd really appreciate if anyone could point me to a working,
> possibly
> minimal, example of code using boost::intrusive_ptr and binded to Java wi=
th
> SWIG, please. It'd be great if such an example could be included in the
> official example suite, by the way.
>=20
> Thanks in advance,
> Mt
>=20


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