wireguard-go/misc.go
2018-09-16 18:49:19 +02:00

49 lines
692 B
Go

/* SPDX-License-Identifier: GPL-2.0
*
* Copyright (C) 2017-2018 WireGuard LLC. All Rights Reserved.
*/
package main
import (
"sync/atomic"
)
/* Atomic Boolean */
const (
AtomicFalse = int32(iota)
AtomicTrue
)
type AtomicBool struct {
flag int32
}
func (a *AtomicBool) Get() bool {
return atomic.LoadInt32(&a.flag) == AtomicTrue
}
func (a *AtomicBool) Swap(val bool) bool {
flag := AtomicFalse
if val {
flag = AtomicTrue
}
return atomic.SwapInt32(&a.flag, flag) == AtomicTrue
}
func (a *AtomicBool) Set(val bool) {
flag := AtomicFalse
if val {
flag = AtomicTrue
}
atomic.StoreInt32(&a.flag, flag)
}
func min(a, b uint) uint {
if a > b {
return b
}
return a
}