Example of atomic store

Atomic.go

package main

import (
	"fmt"
	"math/bits"
	"runtime"
	"sync/atomic"
	"time"
)

var value uint64

func main() {
	fmt.Println(runtime.NumCPU())

	// go func() { for{value = 0b0000000000000000000000000000000000000000000000000000000000000001} }()
	// go func() { for{value = 0b00000000000000000000000000000000000000000000000000000001} }()
	// go func() { for{value = 0b000000000000000000000000000000000000000000000001} }()
	// go func() { for{value = 0b0000000000000000000000000000000000000001} }()
	// go func() { for{value = 0b00000000000000000000000000000001} }()
	// go func() { for{value = 0b000000000000000000000001} }()
	// go func() { for{value = 0b000000000000001} }()
	// go func() { for{value = 0b0000001} }()

	go func() { for { atomic.StoreUint64(&value, 0b0000000000000000000000000000000000000000000000000000000000000001) } }()
	go func() { for { atomic.StoreUint64(&value, 0b00000000000000000000000000000000000000000000000000000001) } }()
	go func() { for { atomic.StoreUint64(&value, 0b000000000000000000000000000000000000000000000001) } }()
	go func() { for { atomic.StoreUint64(&value, 0b0000000000000000000000000000000000000001) } }()
	go func() { for { atomic.StoreUint64(&value, 0b00000000000000000000000000000001) } }()
	go func() { for { atomic.StoreUint64(&value, 0b000000000000000000000001) } }()
	go func() { for { atomic.StoreUint64(&value, 0b000000000000001) } }()
	go func() { for { atomic.StoreUint64(&value, 0b0000001) } }()

	time.Sleep(time.Second)

	for {
		local := value
		if bits.OnesCount64(local) != 1 {
			panic(fmt.Sprintf("Caught: %v", local))
		}
	}
}