29     addr: *mut u32,  field
33     pub fn new(addr: *mut u32) -> Self {  in new()
34         return Futex { addr };  in new()
38         return unsafe { self.addr.offset(offset) };  in get_addr()
42         return unsafe { self.addr.offset(offset).read() };  in get_val()
47             self.addr.offset(offset).write(val);  in set_val()
57     addr: *mut i32,  field
61     pub fn new(addr: *mut i32) -> Self {  in new()
62         return Lock { addr };  in new()
66         return unsafe { self.addr.offset(offset).read() };  in get_val()
71             self.addr.offset(offset).write(val);  in set_val()