Anyone got any good resources on embedding C into Ruby? The ones I
found were a couple years old (i.e. for 1.6).
What I'd like to do is be able to call Ruby functions from the C code
(don't care about return value here), and be able to call C functions
(and get the return data) from the Ruby code.
Thanks,
Joe
Anyone got any good resources on embedding C into Ruby? The ones I
found were a couple years old (i.e. for 1.6).
Chapter 21 in Programming Ruby, Second Edition covers it for Ruby 1.8.
I haven't tried it but it looks like a reasonably complete
explanation.
On 12/11/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
What I'd like to do is be able to call Ruby functions from the C code
(don't care about return value here), and be able to call C functions
(and get the return data) from the Ruby code.Thanks,
Joe
--
Jon Smirl
jonsmirl@gmail.com
I created a Ruby extension in C called 'functions.so'. My ruby script
is require'ing it.
When I launch the Ruby script via ruby_run() in C, I get 'no such file
to load -- functions' error.
Any ideas?
On 12/11/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
Anyone got any good resources on embedding C into Ruby? The ones I
found were a couple years old (i.e. for 1.6).What I'd like to do is be able to call Ruby functions from the C code
(don't care about return value here), and be able to call C functions
(and get the return data) from the Ruby code.
> Anyone got any good resources on embedding C into Ruby? The ones I
> found were a couple years old (i.e. for 1.6).
>
> What I'd like to do is be able to call Ruby functions from the C code
> (don't care about return value here), and be able to call C functions
> (and get the return data) from the Ruby code.I created a Ruby extension in C called 'functions.so'. My ruby script
is require'ing it.When I launch the Ruby script via ruby_run() in C, I get 'no such file
to load -- functions' error.
The source code from the book is here:
http://www.pragmaticprogrammer.com/titles/ruby/code/index.html
The examples from "Extending Ruby" may help.
On 12/11/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
On 12/11/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
Any ideas?
--
Jon Smirl
jonsmirl@gmail.com
Aha, calling ruby_init_loadpath() did the trick.
Essentially, I have a C program. I want to create a GUI (using
ruby-gnome2) that can call the C program's functions and process and
report its data.
Originally, I added a small UDP server to the C program that would
listen for UDP messages from the Ruby GUI and that's how they
exchanged information. The process of creating all the message
formats for the UDP messages was a pain in the butt though. So I'm
thinking of a different approach (embedding a Ruby program in the C
executable and create Ruby extensions for calling the C functions).
Joe
On 12/11/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
On 12/11/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
> Anyone got any good resources on embedding C into Ruby? The ones I
> found were a couple years old (i.e. for 1.6).
>
> What I'd like to do is be able to call Ruby functions from the C code
> (don't care about return value here), and be able to call C functions
> (and get the return data) from the Ruby code.I created a Ruby extension in C called 'functions.so'. My ruby script
is require'ing it.When I launch the Ruby script via ruby_run() in C, I get 'no such file
to load -- functions' error.
Is this a reasonable approach:
int main()
{
initialize ruby stuff
create glib thread (or maybe pthread)
{
run ruby script that starts the GUI
}
}
On 12/11/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
On 12/11/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
> On 12/11/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
> > Anyone got any good resources on embedding C into Ruby? The ones I
> > found were a couple years old (i.e. for 1.6).
> >
> > What I'd like to do is be able to call Ruby functions from the C code
> > (don't care about return value here), and be able to call C functions
> > (and get the return data) from the Ruby code.
>
> I created a Ruby extension in C called 'functions.so'. My ruby script
> is require'ing it.
>
> When I launch the Ruby script via ruby_run() in C, I get 'no such file
> to load -- functions' error.Aha, calling ruby_init_loadpath() did the trick.
Essentially, I have a C program. I want to create a GUI (using
ruby-gnome2) that can call the C program's functions and process and
report its data.Originally, I added a small UDP server to the C program that would
listen for UDP messages from the Ruby GUI and that's how they
exchanged information. The process of creating all the message
formats for the UDP messages was a pain in the butt though. So I'm
thinking of a different approach (embedding a Ruby program in the C
executable and create Ruby extensions for calling the C functions).
Anyone know how I can avoid the following compile errors?
/usr/lib/libruby.so: undefined reference to `gnu_dev_major@GLIBC_2.3.3'
/usr/lib/libruby.so: undefined reference to `gnu_dev_minor@GLIBC_2.3.3'
One more question:
Can I embed a Ruby extension into a C executable, run a Ruby script
from the C executable, and have the Ruby script have access to the
Ruby extension that's in the C executable?
Whew, figured it all out.
My solution was to create a Ruby object in C that has access to all of
the C program's internal data, then create a normal Ruby object from a
Ruby script file, then give that Ruby object the C/Ruby object that I
first created.
So, now, in C, I have this gigantic array of structs. Each struct has
a bunch of fields and a bunch of 'sub structs' (i.e. pointers to other
structs).
What's the easiest way to do reporting on this array of structs in Ruby?
Thanks,
Joe