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| package main
import (
"fmt"
"sync"
"time"
)
type threadSafeSet struct {
sync.RWMutex
data map[interface{}]interface{}
}
func (set *threadSafeSet)Add(item interface{}) {
set.Lock()
set.data[item] = true
set.Unlock()
}
func (set *threadSafeSet)Remove(item interface{}) {
set.Lock()
delete(set.data,item)
set.Unlock()
}
func (set *threadSafeSet) Iter() <-chan interface{} {
ch := make(chan interface{})
go func() {
set.RLock()
for item,_ := range set.data {
ch <- item
}
close(ch)
set.RUnlock()
}()
return ch
}
func main() {
set := new(threadSafeSet)
set.data = make(map[interface{}]interface{})
for i:=0;i<100 ;i++ {
set.Add(i)
}
for item := range set.Iter(){
fmt.Printf("get value from set,value is %v\n",item)
}
time.Sleep(5 * time.Second)
}
|