| // Copyright 2012 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package atomic |
| |
| func loadUint64(addr *uint64) (val uint64) { |
| for { |
| val = *addr |
| if CompareAndSwapUint64(addr, val, val) { |
| break |
| } |
| } |
| return |
| } |
| |
| func storeUint64(addr *uint64, val uint64) { |
| for { |
| old := *addr |
| if CompareAndSwapUint64(addr, old, val) { |
| break |
| } |
| } |
| return |
| } |
| |
| func addUint64(val *uint64, delta uint64) (new uint64) { |
| for { |
| old := *val |
| new = old + delta |
| if CompareAndSwapUint64(val, old, new) { |
| break |
| } |
| } |
| return |
| } |
| |
| func swapUint64(addr *uint64, new uint64) (old uint64) { |
| for { |
| old = *addr |
| if CompareAndSwapUint64(addr, old, new) { |
| break |
| } |
| } |
| return |
| } |
