-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
83 lines (63 loc) · 913 Bytes
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
package main
import (
"fmt"
"sync"
"time"
)
var wg sync.WaitGroup
//一直循环
func main1() {
wg.Add(1)
go func() {
for {
fmt.Println("worker")
time.Sleep(1 * time.Second)
}
wg.Done()
}()
wg.Wait()
fmt.Println("over")
}
//------怎么优雅的关闭
//全局变量方法
var exit bool
func main2() {
wg.Add(1)
go func() {
for {
fmt.Println("worker")
time.Sleep(1 * time.Second)
if exit {
break
}
}
wg.Done()
}()
time.Sleep(5 * time.Second)
exit = true
wg.Wait()
fmt.Println("over")
}
//通过通道关闭
func main3() {
var exitChan chan bool
exitChan = make(chan bool)
go func() {
for {
select {
case <-exitChan:
goto Loop
default:
fmt.Println("worker")
time.Sleep(1 * time.Second)
}
}
Loop:
}()
time.Sleep(5 * time.Second)
exitChan <- false
fmt.Println("over")
}
//通过context来取消
func main() {
}