summaryrefslogtreecommitdiffstats
path: root/test/chan/goroutines.go
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--test/chan/goroutines.go41
1 files changed, 41 insertions, 0 deletions
diff --git a/test/chan/goroutines.go b/test/chan/goroutines.go
new file mode 100644
index 0000000..6ffae7d
--- /dev/null
+++ b/test/chan/goroutines.go
@@ -0,0 +1,41 @@
+// run
+
+// Copyright 2009 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.
+
+// Torture test for goroutines.
+// Make a lot of goroutines, threaded together, and tear them down cleanly.
+
+package main
+
+import (
+ "os"
+ "strconv"
+)
+
+func f(left, right chan int) {
+ left <- <-right
+}
+
+func main() {
+ var n = 10000
+ if len(os.Args) > 1 {
+ var err error
+ n, err = strconv.Atoi(os.Args[1])
+ if err != nil {
+ print("bad arg\n")
+ os.Exit(1)
+ }
+ }
+ leftmost := make(chan int)
+ right := leftmost
+ left := leftmost
+ for i := 0; i < n; i++ {
+ right = make(chan int)
+ go f(left, right)
+ left = right
+ }
+ go func(c chan int) { c <- 1 }(right)
+ <-leftmost
+}