An example of an atomic counter in Go.

atomicEx.go

package main

import (
	"fmt"
	"sync"
	"sync/atomic"
)

func main() {

	var wg sync.WaitGroup
	var c int64 = 0
	wg.Add(100)

	for i := 0; i < 100; i++ {
		go func() {
			var count int64
			count = c
			atomic.AddInt64(&count, 1)
			c = count
			fmt.Println(c)
			wg.Done()

		}()
	}
	wg.Wait()

	fmt.Println("End value: ", c)

}