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ffi_talk

Ffi_talk is a project mainly written in RUBY and C, it's free.

slides and example code from pghrb ffi lighting talk

= FFI Talk

These are the slides and the example code I used in my FFI lighting talk. Broadly the examples assume a POSIX operating system and the S.M.A.R.T. example assumes Linux but could be ported elsewhere easy enough. Be careful, the examples are arranged to fit on a projector screen more than correctness:)

== Examples

=== hello_world

Simple hello world example

=== hello

Example passing params to C function

=== inet_checksum

Example using pointers and semi-realistic computation

=== getpid

libc example that gets the current process id

=== S.M.A.R.T.

Native code returns pointers to structs containing hard drive diagnostic information (Linux specific)

== Presentation

showoff slides

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