"golang reset locked mutex" Code Answer's
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golang reset locked mutex
Sparkling Skunk
on May 13, 2021
package main
import (
"errors"
"fmt"
"sync"
"time"
"golang.org/x/sync/semaphore"
)
var sem = semaphore.NewWeighted(1)
func main() {
var wg sync.WaitGroup
for i := 0; i < 10; i++ {
wg.Add(1)
go func() {
defer wg.Done()
if err := onlyOne(); err != nil {
fmt.Println(err)
}
}()
time.Sleep(time.Second)
}
wg.Wait()
}
func onlyOne() error {
if !sem.TryAcquire(1) {
return errors.New("busy")
}
defer sem.Release(1)
fmt.Println("working")
time.Sleep(5 * time.Second)
return nil
}
Source: stackoverflow.com
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