1 // run 2 3 // Copyright 2009 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 // Torture test for goroutines. 8 // Make a lot of goroutines, threaded together, and tear them down cleanly. 9 10 package main 11 12 import ( 13 "os" 14 "strconv" 15 ) 16 17 func f(left, right chan int) { 18 left <- <-right 19 } 20 21 func main() { 22 var n = 10000 23 if len(os.Args) > 1 { 24 var err error 25 n, err = strconv.Atoi(os.Args[1]) 26 if err != nil { 27 print("bad arg\n") 28 os.Exit(1) 29 } 30 } 31 leftmost := make(chan int) 32 right := leftmost 33 left := leftmost 34 for i := 0; i < n; i++ { 35 right = make(chan int) 36 go f(left, right) 37 left = right 38 } 39 go func(c chan int) { c <- 1 }(right) 40 <-leftmost 41 } 42
