mirror of
https://github.com/golang/go
synced 2024-11-25 04:17:57 -07:00
69 lines
965 B
Go
69 lines
965 B
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test select when discarding a value.
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package main
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import "runtime"
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func recv1(c <-chan int) {
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<-c
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}
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func recv2(c <-chan int) {
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select {
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case <-c:
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}
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}
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func recv3(c <-chan int) {
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c2 := make(chan int)
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select {
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case <-c:
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case <-c2:
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}
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}
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func send1(recv func(<-chan int)) {
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c := make(chan int)
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go recv(c)
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runtime.Gosched()
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c <- 1
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}
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func send2(recv func(<-chan int)) {
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c := make(chan int)
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go recv(c)
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runtime.Gosched()
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select {
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case c <- 1:
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}
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}
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func send3(recv func(<-chan int)) {
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c := make(chan int)
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go recv(c)
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runtime.Gosched()
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c2 := make(chan int)
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select {
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case c <- 1:
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case c2 <- 1:
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}
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}
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func main() {
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send1(recv1)
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send2(recv1)
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send3(recv1)
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send1(recv2)
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send2(recv2)
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send3(recv2)
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send1(recv3)
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send2(recv3)
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send3(recv3)
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}
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