From: Aaron Patterson <tenderlove@...>
Date: 2012-07-19T03:45:15+09:00
Subject: [ruby-core:46551] Re: [ruby-trunk - Bug #6724][Open] waaaaaaant! (


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On Wed, Jul 18, 2012 at 09:13:45AM +0900, Luis Lavena wrote:
> On Tue, Jul 17, 2012 at 6:27 PM, Aaron Patterson
> <tenderlove@ruby-lang.org> wrote:
> >
> >     class RubyVM
> >       class InstructionSequence
> >         address =3D DL::Handle::DEFAULT['rb_iseq_load']
> >         func =3D Fiddle::Function.new(address, [DL::TYPE_VOIDP] * 3, DL=
::TYPE_VOIDP)
> >
> >         define_singleton_method(:load) do |data, parent =3D nil, opt =
=3D nil|
> >           func.call(DL.dlwrap(data), parent, opt).to_value
> >         end
> >       end
> >     end
> >
>=20
> For some reason ::DEFAULT doesn't work on windows, so a bit of tweak:
>=20
>     require 'rbconfig'
>     require 'dl'
>     require 'fiddle'
>     require 'minitest/autorun'
>=20
>     class RubyVM
>       class InstructionSequence
>         handle =3D DL::Handle.new(RbConfig::CONFIG["RUBY_SO_NAME"])
>         address =3D handle['rb_iseq_load']
>         func =3D Fiddle::Function.new(address, [DL::TYPE_VOIDP] * 3,
> DL::TYPE_VOIDP)
>=20
>         define_singleton_method(:load) do |data, parent =3D nil, opt =3D =
nil|
>           func.call(DL.dlwrap(data), parent, opt).to_value
>         end
>       end
>     end
>=20
>     class TestISeq < MiniTest::Unit::TestCase
>       def test_load
>         ins   =3D RubyVM::InstructionSequence.new '5 + 10'
>         other =3D RubyVM::InstructionSequence.load ins.to_a
>         assert_equal ins.eval, other.eval
>       end
>     end
>=20
> That or simply: DL::Handle.new (no argument) which will resolve to librub=
y DLL.

Glad we could get this working on windows! ;-)

As a side note, maybe we should fix DEFAULT?  Any ideas what's wrong on
windows?

--=20
Aaron Patterson
http://tenderlovemaking.com/

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