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atomic.go
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atomic.go
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package utils
import (
"fmt"
"sync/atomic"
)
// AtomicInt64
type AtomicInt64 int64
// CreateAtomicInt64 with initial value
func CreateAtomicInt64(initialValue int64) *AtomicInt64 {
a := AtomicInt64(initialValue)
return &a
}
// GetAtomic
func (a *AtomicInt64) GetAtomic() int64 {
return int64(*a)
}
// SetAtomic
func (a *AtomicInt64) SetAtomic(newValue int64) {
atomic.StoreInt64((*int64)(a), newValue)
}
// GetAndSetAtomic return current and set new
func (a *AtomicInt64) GetAndSetAtomic(newValue int64) int64 {
for {
current := a.GetAtomic()
if a.CompareAndSet(current, newValue) {
return current
}
}
}
// GetNewAndSetAtomic set new and return new
func (a *AtomicInt64) GetNewAndSetAtomic(newValue int64) int64 {
for {
current := a.GetAtomic()
if a.CompareAndSet(current, newValue) {
return newValue
}
}
}
// CompareAndSet
func (a *AtomicInt64) CompareAndSet(expect, update int64) bool {
return atomic.CompareAndSwapInt64((*int64)(a), expect, update)
}
// GetOldAndIncrement return current and add 1 to atomic
func (a *AtomicInt64) GetOldAndIncrement() int64 {
for {
current := a.GetAtomic()
next := current + 1
if a.CompareAndSet(current, next) {
return current
}
}
}
// GetOldAndDecrement return current and minus 1 to atomic
func (a *AtomicInt64) GetOldAndDecrement() int64 {
for {
current := a.GetAtomic()
next := current - 1
if a.CompareAndSet(current, next) {
return current
}
}
}
// GetOldAndAdd return current and add delta to atomic
func (a *AtomicInt64) GetOldAndAdd(delta int64) int64 {
for {
current := a.GetAtomic()
next := current + delta
if a.CompareAndSet(current, next) {
return current
}
}
}
// IncrementAndGetNew
func (a *AtomicInt64) IncrementAndGetNew() int64 {
for {
current := a.GetAtomic()
next := current + 1
if a.CompareAndSet(current, next) {
return next
}
}
}
// DecrementAndGetNew
func (a *AtomicInt64) DecrementAndGetNew() int64 {
for {
current := a.GetAtomic()
next := current - 1
if a.CompareAndSet(current, next) {
return next
}
}
}
// AddAndGetNew
func (a *AtomicInt64) AddAndGetNew(delta int64) int64 {
for {
current := a.GetAtomic()
next := current + delta
if a.CompareAndSet(current, next) {
return next
}
}
}
func (a *AtomicInt64) String() string {
return fmt.Sprintf("%d", a.GetAtomic())
}
// AtomicInt32
type AtomicInt32 int32
// CreateAtomicInt32
func CreateAtomicInt32(initialValue int32) *AtomicInt32 {
a := AtomicInt32(initialValue)
return &a
}
// GetAtomic
func (a *AtomicInt32) GetAtomic() int32 {
return int32(*a)
}
// SetAtomic
func (a *AtomicInt32) SetAtomic(newValue int32) {
// replace stored value by newValue
atomic.StoreInt32((*int32)(a), newValue)
}
// GetAndSetAtomic
func (a *AtomicInt32) GetAndSetAtomic(newValue int32) int32 {
for {
current := a.GetAtomic()
if a.CompareAndSet(current, newValue) {
return current
}
}
}
// CompareAndSet
func (a *AtomicInt32) CompareAndSet(expect, update int32) bool {
return atomic.CompareAndSwapInt32((*int32)(a), expect, update)
}
// GetOldAndIncrement
func (a *AtomicInt32) GetOldAndIncrement() int32 {
for {
current := a.GetAtomic()
next := current + 1
if a.CompareAndSet(current, next) {
return current
}
}
}
// GetOldAndDecrement
func (a *AtomicInt32) GetOldAndDecrement() int32 {
for {
current := a.GetAtomic()
next := current - 1
if a.CompareAndSet(current, next) {
return current
}
}
}
// GetOldAndAdd
func (a *AtomicInt32) GetOldAndAdd(delta int32) int32 {
for {
current := a.GetAtomic()
next := current + delta
if a.CompareAndSet(current, next) {
return current
}
}
}
// IncrementAndGetNew
func (a *AtomicInt32) IncrementAndGetNew() int32 {
for {
current := a.GetAtomic()
next := current + 1
if a.CompareAndSet(current, next) {
return next
}
}
}
// DecrementAndGetNew
func (a *AtomicInt32) DecrementAndGetNew() int32 {
for {
current := a.GetAtomic()
next := current - 1
if a.CompareAndSet(current, next) {
return next
}
}
}
// AddAndGetNew
func (a *AtomicInt32) AddAndGetNew(delta int32) int32 {
for {
current := a.GetAtomic()
next := current + delta
if a.CompareAndSet(current, next) {
return next
}
}
}
func (a *AtomicInt32) String() string {
return fmt.Sprintf("%d", a.GetAtomic())
}