appsignal/c_from_ruby_example

Example to go with the Ruby Magic blog post.

CFromRubyExample

Example to go with the Ruby Magic blog post.

To hack on this run:

$ bin/setup
$ bin/rake compile

And then run this play around:

`$ bin/console

irb(main):001:0> CFromRubyExample::Helpers.string("a string")
=> "String from Ruby: 'a string'"
irb(main):002:0> CFromRubyExample::NativeHelpers.string("a string")
=> "String from C: 'a string'"
irb(main):003:0>

Or run the tests:

bin/rake test

c_from_ruby_example's Issues

Some questions regard your tutorial

Hi, Thank you for the great tutorial on creating ruby gem with c extension.
I have couple of questions hope you can help me to clear.

For rb_define_singleton_method(NativeHelpers, "string", string, 1);
I got the function definition as void rb_define_singleton_method(VALUE obj, const char *name, VALUE(*func)(ANYARGS), int argc);
May I ask is "string" for the name of function; and is string for type of input?

For rb_define_class_under(...), you create another class NativeHelpers under module CFromRubyExample; does this mean the class Helpers is obsolete(i.e. not necessary for the library anymore)? If class Helpers is obsolete, then what is point of attach_function :string, [:string], :string inside class Helpers extend FFI::Library block (e.g. nested class) ?

Thank you so much!

Running "rake" or "rake test" returns with error "File does not exist: extension"

After calling the commands in the README and confirming the extension can compile and works with the commands provided, I attempted to run the included tests. They didn't run, instead giving the error "File does not exist: extension". I see that "extension.bundle" is generated after compilation, in the "ext" directory. Is there something else it needs?

I'm using ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-darwin17.0] on macOS Mojave, with the latest Xcode tools.