close

VALUE
rb_dlhandle_close(VALUE self)
{
    struct dl_handle *dlhandle;

    TypedData_Get_Struct(self, struct dl_handle, &dlhandle_data_type, dlhandle);
    if(dlhandle->open) {
        int ret = dlclose(dlhandle->ptr);
        dlhandle->open = 0;

        /* Check dlclose for successful return value */
        if(ret) {
#if defined(HAVE_DLERROR)
            rb_raise(rb_eDLError, "%s", dlerror());
#else
            rb_raise(rb_eDLError, "could not close handle");
#endif
        }
        return INT2NUM(ret);
    }
    rb_raise(rb_eDLError, "dlclose() called too many times");

    UNREACHABLE;
}