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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 13:18:25 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 13:18:25 +0000
commit109be507377fe7f6e8819ac94041d3fdcdf6fd2f (patch)
tree2806a689f8fab4a2ec9fc949830ef270a91d667d /test/ken/chan1.go
parentInitial commit. (diff)
downloadgolang-1.19-upstream.tar.xz
golang-1.19-upstream.zip
Adding upstream version 1.19.8.upstream/1.19.8upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/ken/chan1.go')
-rw-r--r--test/ken/chan1.go55
1 files changed, 55 insertions, 0 deletions
diff --git a/test/ken/chan1.go b/test/ken/chan1.go
new file mode 100644
index 0000000..cbd21a3
--- /dev/null
+++ b/test/ken/chan1.go
@@ -0,0 +1,55 @@
+// 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.
+
+// Test communication with multiple simultaneous goroutines.
+
+package main
+
+import "runtime"
+
+const N = 1000 // sent messages
+const M = 10 // receiving goroutines
+const W = 2 // channel buffering
+var h [N]int // marking of send/recv
+
+func r(c chan int, m int) {
+ for {
+ select {
+ case r := <-c:
+ if h[r] != 1 {
+ println("r",
+ "m=", m,
+ "r=", r,
+ "h=", h[r])
+ panic("fail")
+ }
+ h[r] = 2
+ }
+ }
+}
+
+func s(c chan int) {
+ for n := 0; n < N; n++ {
+ r := n
+ if h[r] != 0 {
+ println("s")
+ panic("fail")
+ }
+ h[r] = 1
+ c <- r
+ }
+}
+
+func main() {
+ c := make(chan int, W)
+ for m := 0; m < M; m++ {
+ go r(c, m)
+ runtime.Gosched()
+ }
+ runtime.Gosched()
+ runtime.Gosched()
+ s(c)
+}