At Mon, 6 Jan 2014 13:47:30 +0100, Manfred Lotz wrote: > On Mon, 6 Jan 2014 10:32:49 +0100 > Manfred Lotz <manfred.l...@arcor.de> wrote: > > > I was to quick to state this is a solution as it is not a good idea if > > for example a socket file will be shown as a duplicate of normal file > > having size zero. > > > > For the time being I guess I have to look how to implement it using C > > stat call from Racket. > > > > > > To get into I tried the example in 'Indide Racket C API'/Overview > > I got: > compiled > compiled/native > compiled/native/amd64-linux > compiled/native/amd64-linux/3m > compiled/native/amd64-linux/3m/hi_rkt.so > > > Documentation says that it could be loaded like this: > > (require "hi.rkt") > > > Now my question: What would the content of hi.rkt be?
The analogous source "hi.rkt" would be #lang racket/base (provide greeting) (define greeting "hello") but you don't actually create a "hi.rkt". Instead, the module loader substitutes "hit_rkt.so". Did you consider using `ffi/unsafe` instead of creating an extension? Using the FFI library is usually much easier and more portable. Unfortunately, the `stat` function, with its structure layout that varies across platforms, is more difficult to call via `ffi/unsafe`, but I would still do that instead of trying to write an extension. ____________________ Racket Users list: http://lists.racket-lang.org/users
