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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/go.test/test/chan/goroutines.go
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Diffstat (limited to 'gcc/testsuite/go.test/test/chan/goroutines.go')
-rw-r--r--gcc/testsuite/go.test/test/chan/goroutines.go41
1 files changed, 41 insertions, 0 deletions
diff --git a/gcc/testsuite/go.test/test/chan/goroutines.go b/gcc/testsuite/go.test/test/chan/goroutines.go
new file mode 100644
index 000000000..d8f8803df
--- /dev/null
+++ b/gcc/testsuite/go.test/test/chan/goroutines.go
@@ -0,0 +1,41 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// 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.
+
+// make a lot of goroutines, threaded together.
+// 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 os.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
+}