blob: 20456a9d62ec755867e2172ac0c5c954903a70e0 (
plain)
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
|
// run
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test select when discarding a value.
package main
import "runtime"
func recv1(c <-chan int) {
<-c
}
func recv2(c <-chan int) {
select {
case <-c:
}
}
func recv3(c <-chan int) {
c2 := make(chan int)
select {
case <-c:
case <-c2:
}
}
func send1(recv func(<-chan int)) {
c := make(chan int)
go recv(c)
runtime.Gosched()
c <- 1
}
func send2(recv func(<-chan int)) {
c := make(chan int)
go recv(c)
runtime.Gosched()
select {
case c <- 1:
}
}
func send3(recv func(<-chan int)) {
c := make(chan int)
go recv(c)
runtime.Gosched()
c2 := make(chan int)
select {
case c <- 1:
case c2 <- 1:
}
}
func main() {
send1(recv1)
send2(recv1)
send3(recv1)
send1(recv2)
send2(recv2)
send3(recv2)
send1(recv3)
send2(recv3)
send3(recv3)
}
|
