From: ts <decoux@...>
Date: 2006-07-28T01:46:57+09:00
Subject: Re: Embedded socket error

>>>>> "N" == Nathan Whitney <laserwhit@gmail.com> writes:

N> static VALUE wrap_run( VALUE arg1 ) {
                          ^^^^^^^^^^
N>     rb_load_file( StringValueCStr( arg1 ) );
                                      ^^^^
N>     return Qnil;
N> }

N> static VALUE protected_run( VALUE script ) {
N>     int error;
N>     VALUE args[1];
       ^^^^^^^^^^^^^
N>     VALUE result;

N>     args[0] = script;
       ^^^^^^^

N>     result = rb_protect( wrap_run, (VALUE)args, &error );
                                             ^^^^
N>     return error ? Qnil : result;
N> }

 You give a C array to wrap_run() and then inside wrap_run() you interpret
 it as a VALUE.

 Now if you want to do something similar to "load 'embed.rb'", you have
 the function 

 void rb_load_protect(VALUE fname, int wrap, int *state);

 which call rb_load() inside the equivalent of rb_protect()


Guy Decoux