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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
| package profile
|
| import (
| "context"
| "demo/deliver"
| "fmt"
| "os"
| "time"
| )
|
| func shmrecver(ctx context.Context, c deliver.Deliver, index int, ch chan<- bool) {
|
| var msg []byte
| var err error
|
| var t int64
| var elapse int64
| count := 0
|
| for {
| select {
| case <-ctx.Done():
| return
| default:
| msg, err = c.Recv()
| if err != nil {
| fmt.Println("recv error : ", err)
| return
| }
| if ch != nil {
| ch <- true
| }
|
| if t == 0 {
| t = time.Now().UnixNano()
| }
| elapse = time.Now().UnixNano() - t
|
| count++
|
| if elapse > 1e9 {
| fmt.Printf("NODE-%d: RECEIVED \"%d\" data %s len %d, use \"%d\" ns\n",
| index, count, string(msg), len(msg), elapse)
| elapse = 0
| count = 0
| t = 0
| }
| }
|
| // time.Sleep(10 * time.Millisecond)
| }
|
| }
|
| func Shmrecv(ctx context.Context, server bool, ipc string, count int) {
| blocks := 2
|
| if server {
| s, err := deliver.NewServerWithError(deliver.Shm, ipc, blocks, dLen)
| for {
| if err == nil {
| break
| }
| time.Sleep(1 * time.Second)
| s, err = deliver.NewServerWithError(deliver.Shm, ipc, blocks, dLen)
| }
| go shmrecver(ctx, s, 0, nil)
|
| } else {
| // recvers(ctx, ipc, count, nil)
|
| chWaiter := make(chan bool, count)
| cs := recvers(ctx, ipc, count, chWaiter)
|
| go func() {
| waitCount := 0
| for {
| select {
| case <-ctx.Done():
| return
| case <-chWaiter:
| waitCount = 0
| default:
| if waitCount > 200*3 {
| for _, v := range cs {
| v.Close()
| }
| cs = recvers(ctx, ipc, count, chWaiter)
| fmt.Println("restart recievers")
| waitCount = 0
| continue
| }
| time.Sleep(time.Millisecond * 5)
| waitCount++
| }
| }
| }()
| }
| }
|
| func recvers(ctx context.Context, url string, count int, ch chan<- bool) []deliver.Deliver {
| for {
| file := "/dev/shm/" + url
| exist, _ := pathExists(file)
| if exist {
| break
| }
| fmt.Println("wait for shm server start")
| time.Sleep(time.Second)
| }
| var cs []deliver.Deliver
| for i := 0; i < count; i++ {
| c, err := deliver.NewClientWithError(deliver.Shm, url)
| for {
| if err == nil {
| break
| }
| time.Sleep(1 * time.Second)
| c, err = deliver.NewClientWithError(deliver.Shm, url)
| fmt.Println(i, " client create failed : ", err)
| }
| cs = append(cs, c)
| go shmrecver(ctx, c, i, ch)
| }
| return cs
| }
|
| func pathExists(path string) (bool, error) {
| _, err := os.Stat(path)
| if err == nil {
| return true, nil
| }
| if os.IsNotExist(err) {
| return false, nil
| }
| return false, err
| }
|
|
