github.com/liloew/wireguard-go@v0.0.0-20220224014633-9cd745e6f114/device/misc.go (about) 1 /* SPDX-License-Identifier: MIT 2 * 3 * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved. 4 */ 5 6 package device 7 8 import ( 9 "sync/atomic" 10 ) 11 12 /* Atomic Boolean */ 13 14 const ( 15 AtomicFalse = int32(iota) 16 AtomicTrue 17 ) 18 19 type AtomicBool struct { 20 int32 21 } 22 23 func (a *AtomicBool) Get() bool { 24 return atomic.LoadInt32(&a.int32) == AtomicTrue 25 } 26 27 func (a *AtomicBool) Swap(val bool) bool { 28 flag := AtomicFalse 29 if val { 30 flag = AtomicTrue 31 } 32 return atomic.SwapInt32(&a.int32, flag) == AtomicTrue 33 } 34 35 func (a *AtomicBool) Set(val bool) { 36 flag := AtomicFalse 37 if val { 38 flag = AtomicTrue 39 } 40 atomic.StoreInt32(&a.int32, flag) 41 }