Function ruby_sys::vm::rb_thread_call_without_gvl

pub unsafe extern fn rb_thread_call_without_gvl(func: CallbackPtr,
                                                args: *const c_void,
                                                unblock_func: CallbackPtr,
                                                unblock_args: *const c_void)
                                                -> *mut c_void

Deprecated since 0.2.18

: Use thread::rb_thread_call_without_gvl() instead