wireguard-go/device/misc.go
2019-03-03 05:00:40 +01:00

49 lines
688 B
Go

/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
*/
package device
import (
"sync/atomic"
)
/* Atomic Boolean */
const (
AtomicFalse = int32(iota)
AtomicTrue
)
type AtomicBool struct {
int32
}
func (a *AtomicBool) Get() bool {
return atomic.LoadInt32(&a.int32) == AtomicTrue
}
func (a *AtomicBool) Swap(val bool) bool {
flag := AtomicFalse
if val {
flag = AtomicTrue
}
return atomic.SwapInt32(&a.int32, flag) == AtomicTrue
}
func (a *AtomicBool) Set(val bool) {
flag := AtomicFalse
if val {
flag = AtomicTrue
}
atomic.StoreInt32(&a.int32, flag)
}
func min(a, b uint) uint {
if a > b {
return b
}
return a
}