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concurrent.go
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concurrent.go
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// Copyright 2023 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
package taskutils
import (
"errors"
"reflect"
"sync"
)
func RunConcurrent(tasks any, concurrent int, f func(task any)) error {
if tasks == nil {
return nil
}
var tasksValue = reflect.ValueOf(tasks)
if tasksValue.Type().Kind() != reflect.Slice {
return errors.New("ony works for slice")
}
var countTasks = tasksValue.Len()
if countTasks == 0 {
return nil
}
if concurrent <= 0 {
concurrent = 8
}
if concurrent > countTasks {
concurrent = countTasks
}
var taskChan = make(chan any, countTasks)
for i := 0; i < countTasks; i++ {
taskChan <- tasksValue.Index(i).Interface()
}
var wg = &sync.WaitGroup{}
wg.Add(concurrent)
for i := 0; i < concurrent; i++ {
go func() {
defer wg.Done()
for {
select {
case task := <-taskChan:
f(task)
default:
return
}
}
}()
}
wg.Wait()
return nil
}