rb_sys::bindings::uncategorized

Function rb_define_variable

Source 
pub unsafe extern "C" fn rb_define_variable(
    name: *const c_char,
    var: *mut VALUE,
)
Expand description

“Shares” a global variable between Ruby and C. Normally a Ruby-level global variable is stored somewhere deep inside of the interpreter’s execution context, but this way you can explicitly specify its storage.

static VALUE foo;

extern "C" void
init_Foo(void)
{
    foo = [`rb_eval_string`]"...");
    [`rb_define_variable`]"$foo", &foo);
}

In the above example a Ruby global variable named $foo is stored in a C global variable named foo.

§@param[in] name Variable (Ruby side). @param[in] var Variable (C side). @post Ruby level global variable named name is defined if absent, and its storage is set to var.

Generated by rb-sys for Ruby mri-x86_64-linux-gnu-3.2.3