go routines atomics / published by https://github.com/dacr/code-examples-manager #21f820ec-141e-4ca2-808d-3dfde9948b0c/8e93dbe6d1a03f38b56978664df44c11d68c8ac9

concurrency-goroutines-atomics.go

/*?sr/bin/true; exec /usr/bin/env nix-shell -p go --run "go run $0" #*/
// summary : go routines atomics
// keywords : go, goroutines, atomics, @testable
// publish : gist
// authors : David Crosson
// license : Apache License Version 2.0 (https://www.apache.org/licenses/LICENSE-2.0.txt)
// id : 21f820ec-141e-4ca2-808d-3dfde9948b0c
// created-on : 2025-03-27T15:36:24+01:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : nix-shell -p go --run "go run $file"
package main

import (
	"sync"
	"sync/atomic"
)

func main() {
	sg := sync.WaitGroup{}

	var counter atomic.Uint64

	for i := range 100 {
		sg.Add(1)
		go func() {
			defer sg.Done()
			counter.Add(uint64(i))
		}()
	}
	sg.Wait()

	println(counter.Load())
}