From: ts <decoux@...>
Date: 2006-03-26T23:54:00+09:00
Subject: Re: Saving Proc object in C extension

>>>>> "V" == Victor Shepelev <vshepelev@imho.com.ua> writes:

V> static VALUE save_callback(VALUE self, VALUE proc)
V> {
V> ...bla-bla-bla...

V> rb_global_variable(&proc); //as recommended in "Extending Ruby"

 proc is on the stack, after the end of save_callback() &proc don't make
 reference to the proc object.

V> What I do wrong?

 This is g_callback which must be registered.

static VALUE g_callback;

static VALUE save_callback(VALUE self, VALUE proc)
{
    /* ... */
    g_callback = proc;
    /* ... */
}

/* ... */

void Init_bla_bla_bla()
{
    /* ... */
    g_callback = Qnil;
    rb_global_variable(&g_callback);
    /* ... */
}  


Guy Decoux