고도로 동시적인 Go 시스템에서 스레드로부터 안전한 글로벌 카운터를 구현하는 방법은 무엇입니까?

<code class="go">import "sync/atomic"

var globalCounter int32 = 0 // Atomically updated counter

func IncrementCounter() {
    atomic.AddInt32(&globalCounter, 1) // Atomically increments the counter
}

func ReadCounter() int32 {
    return atomic.LoadInt32(&globalCounter) // Atomically reads the counter's value
}</code>

<code class="go">var counter chan int = make(chan int, 1)

func IncrementCounter() {
    counter <- 1
}

func ReadCounter() int {
    return <-counter
}</code>

<code class="go">var addCounterChan chan int = make(chan int, 100)
var readCounterChan chan int = make(chan int, 100)

func AddCounter() {
    addCounterChan <- 1
}

func GetCount() int {
    return <-readCounterChan
}</code>