質問編集履歴
4
追加説明
test
CHANGED
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File without changes
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test
CHANGED
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@@ -54,13 +54,21 @@
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54
54
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55
55
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switch {
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56
56
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57
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-
case <-sig:
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57
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+
case result <-sig:
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58
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+
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58
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-
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59
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+
if result == true{
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60
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+
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59
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-
pp.Print("True")
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61
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+
pp.Print("True")
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62
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+
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63
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+
} else {
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64
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+
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65
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+
pp.Print("False")
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66
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+
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67
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+
}
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60
68
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61
69
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default:
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62
70
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63
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-
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71
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+
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64
72
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65
73
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}
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66
74
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3
追加説明
test
CHANGED
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File without changes
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test
CHANGED
|
@@ -38,9 +38,11 @@
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38
38
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39
39
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sig <- true
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40
40
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41
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+
} else {
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42
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+
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43
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+
sig <- false
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44
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+
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41
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-
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|
45
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+
}
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42
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-
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43
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-
sig <- false
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44
46
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|
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45
47
|
wg.Done()
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46
48
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@@ -173,3 +175,91 @@
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173
175
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をご指導していただきたいです。
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174
176
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175
177
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よろしくお願いたします
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178
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+
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179
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+
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|
180
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+
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|
181
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+
## 追加
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|
182
|
+
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|
183
|
+
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|
184
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+
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|
185
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+
以下のコードではすべてが出力されたあとに`deadlock`のエラーが出ます。
|
|
186
|
+
|
|
187
|
+
|
|
188
|
+
|
|
189
|
+
```
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|
190
|
+
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|
191
|
+
package main
|
|
192
|
+
|
|
193
|
+
|
|
194
|
+
|
|
195
|
+
import (
|
|
196
|
+
|
|
197
|
+
"sync"
|
|
198
|
+
|
|
199
|
+
|
|
200
|
+
|
|
201
|
+
"github.com/k0kubun/pp"
|
|
202
|
+
|
|
203
|
+
)
|
|
204
|
+
|
|
205
|
+
|
|
206
|
+
|
|
207
|
+
func main() {
|
|
208
|
+
|
|
209
|
+
wg := sync.WaitGroup{}
|
|
210
|
+
|
|
211
|
+
sig := make(chan bool)
|
|
212
|
+
|
|
213
|
+
for i := 0; i < 10; i++ {
|
|
214
|
+
|
|
215
|
+
wg.Add(1)
|
|
216
|
+
|
|
217
|
+
go func(i int) {
|
|
218
|
+
|
|
219
|
+
pp.Println(i)
|
|
220
|
+
|
|
221
|
+
if i == 3 {
|
|
222
|
+
|
|
223
|
+
sig <- true
|
|
224
|
+
|
|
225
|
+
} else {
|
|
226
|
+
|
|
227
|
+
sig <- false
|
|
228
|
+
|
|
229
|
+
}
|
|
230
|
+
|
|
231
|
+
wg.Done()
|
|
232
|
+
|
|
233
|
+
}(i)
|
|
234
|
+
|
|
235
|
+
}
|
|
236
|
+
|
|
237
|
+
|
|
238
|
+
|
|
239
|
+
for {
|
|
240
|
+
|
|
241
|
+
switch {
|
|
242
|
+
|
|
243
|
+
case <-sig:
|
|
244
|
+
|
|
245
|
+
pp.Print("True")
|
|
246
|
+
|
|
247
|
+
default:
|
|
248
|
+
|
|
249
|
+
pp.Print("False")
|
|
250
|
+
|
|
251
|
+
}
|
|
252
|
+
|
|
253
|
+
}
|
|
254
|
+
|
|
255
|
+
|
|
256
|
+
|
|
257
|
+
wg.Wait()
|
|
258
|
+
|
|
259
|
+
close(sig)
|
|
260
|
+
|
|
261
|
+
pp.Print("All Done")
|
|
262
|
+
|
|
263
|
+
}
|
|
264
|
+
|
|
265
|
+
```
|
2
追加説明
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -102,6 +102,8 @@
|
|
|
102
102
|
|
|
103
103
|
7
|
|
104
104
|
|
|
105
|
+
fatal error: all goroutines are asleep - deadlock!
|
|
106
|
+
|
|
105
107
|
```
|
|
106
108
|
|
|
107
109
|
|
1
追加説明
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -76,6 +76,36 @@
|
|
|
76
76
|
|
|
77
77
|
|
|
78
78
|
|
|
79
|
+
出力は以下の通りです。
|
|
80
|
+
|
|
81
|
+
|
|
82
|
+
|
|
83
|
+
```
|
|
84
|
+
|
|
85
|
+
9
|
|
86
|
+
|
|
87
|
+
1
|
|
88
|
+
|
|
89
|
+
5
|
|
90
|
+
|
|
91
|
+
0
|
|
92
|
+
|
|
93
|
+
2
|
|
94
|
+
|
|
95
|
+
3
|
|
96
|
+
|
|
97
|
+
"False"8
|
|
98
|
+
|
|
99
|
+
6
|
|
100
|
+
|
|
101
|
+
4
|
|
102
|
+
|
|
103
|
+
7
|
|
104
|
+
|
|
105
|
+
```
|
|
106
|
+
|
|
107
|
+
|
|
108
|
+
|
|
79
109
|
しかし、以下のケースではうまくいきます。
|
|
80
110
|
|
|
81
111
|
|