The primary mechanism for managing state in Go is communication over channels. We saw this for example with worker pools. There are a few other options for managing state though. Here we'll look at using the sync/atomic package for atomic counters accessed by multiple goroutines
package main import ( "fmt" "runtime" "sync/atomic" "time" ) func main() { var ops uint64 = 0 for i := 0; i < 50; i++ { go func() { for { atomic.AddUint64(&ops, 1) runtime.Gosched() } }() } time.Sleep(time.Second) opsFinal := atomic.LoadUint64(&ops) fmt.Println("ops:", opsFinal) }
ops: 10476038
总结 :
1 : ....
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