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atomic.go
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atomic.go
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package zutil
import (
"strconv"
"sync/atomic"
)
type (
Bool struct {
_ Nocmp
b int32
}
Int32 struct {
_ Nocmp
v int32
}
Int64 struct {
_ Nocmp
v int64
}
)
func NewBool(b bool) *Bool {
ret := &Bool{}
if b {
ret.b = 1
}
return ret
}
func (b *Bool) Store(val bool) bool {
var newV int32
if val {
newV = 1
}
return atomic.SwapInt32(&b.b, newV) == 1
}
func (b *Bool) Load() bool {
return atomic.LoadInt32(&b.b) == 1
}
func (b *Bool) Toggle() (old bool) {
for {
old := b.Load()
if b.CAS(old, !old) {
return old
}
}
}
func (b *Bool) CAS(old, new bool) bool {
var o, n int32
if old {
o = 1
}
if new {
n = 1
}
return atomic.CompareAndSwapInt32(&b.b, o, n)
}
func NewInt32(i int32) *Int32 {
return &Int32{
v: i,
}
}
func (i32 *Int32) Add(i int32) int32 {
return atomic.AddInt32(&i32.v, i)
}
func (i32 *Int32) Sub(i int32) int32 {
return atomic.AddInt32(&i32.v, -i)
}
func (i32 *Int32) Swap(i int32) int32 {
return atomic.SwapInt32(&i32.v, i)
}
func (i32 *Int32) Load() int32 {
return atomic.LoadInt32(&i32.v)
}
func (i32 *Int32) Store(i int32) {
atomic.StoreInt32(&i32.v, i)
}
func (i32 *Int32) CAS(old, new int32) bool {
return atomic.CompareAndSwapInt32(&i32.v, old, new)
}
func (i32 *Int32) String() string {
v := i32.Load()
return strconv.FormatInt(int64(v), 10)
}
func NewInt64(i int64) *Int64 {
return &Int64{
v: i,
}
}
func (i64 *Int64) Add(i int64) int64 {
return atomic.AddInt64(&i64.v, i)
}
func (i64 *Int64) Sub(i int64) int64 {
return atomic.AddInt64(&i64.v, -i)
}
func (i64 *Int64) Swap(i int64) int64 {
return atomic.SwapInt64(&i64.v, i)
}
func (i64 *Int64) Load() int64 {
return atomic.LoadInt64(&i64.v)
}
func (i64 *Int64) Store(i int64) {
atomic.StoreInt64(&i64.v, i)
}
func (i64 *Int64) CAS(old, new int64) bool {
return atomic.CompareAndSwapInt64(&i64.v, old, new)
}
func (i64 *Int64) String() string {
v := i64.Load()
return strconv.FormatInt(v, 10)
}