From: Nobuyoshi Nakada <nobu@...>
Date: 2007-07-17T15:26:21+09:00
Subject: Re: ruby extension help

Hi,

At Tue, 17 Jul 2007 11:55:36 +0900,
Oliver wrote in [ruby-core:11724]:
> The C library I am working on has a so-called dynamic command dispatch
> structure, it is basically a hook meant for accommodating a set of
> user-provided call back functions. It is defined as follows:
> 
> /* command dispatch structure */
> typedef int (*proxy_cmd)(int trans_id, int nargs, char **args);

How would char **args be supplied?

> === C usage
> 
> Under normal case, a C library user will supply the following
> structure and make use of above structure.
> 
> int my_init(server,port) { ... }
> int my_connect( ... ) { ...}
> 
> /* put all function pointer into array */
> proxy_cmd cmds[] = {
>    my_init,
>    my_connect,
>    my_finish,
>    ...
> };

Seems impossible to pass callback arguments per commands,
right?

If so, it is quite awkward.

-- 
Nobu Nakada