go sync.Mutex

package main

import (
	"fmt"
	"sync"
	"time"
)

func main() {
	var total =0
    var mux sync.Mutex

	for i:=0; i<10; i++{
		go func() {
			for {
				mux.Lock()
				total += 1
				fmt.Println("total=%d",total)
				time.Sleep(time.Millisecond)
				mux.Unlock()
			}
		}()

	}
	time.Sleep(time.Second)
	fmt.Println("last total=%d",total)
}