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-rw-r--r--test/chan/nonblock.go282
1 files changed, 282 insertions, 0 deletions
diff --git a/test/chan/nonblock.go b/test/chan/nonblock.go
new file mode 100644
index 0000000..7e3c0c7
--- /dev/null
+++ b/test/chan/nonblock.go
@@ -0,0 +1,282 @@
+// 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 channel operations that test for blocking.
+// Use several sizes and types of operands.
+
+package main
+
+import "runtime"
+import "time"
+
+func i32receiver(c chan int32, strobe chan bool) {
+ if <-c != 123 {
+ panic("i32 value")
+ }
+ strobe <- true
+}
+
+func i32sender(c chan int32, strobe chan bool) {
+ c <- 234
+ strobe <- true
+}
+
+func i64receiver(c chan int64, strobe chan bool) {
+ if <-c != 123456 {
+ panic("i64 value")
+ }
+ strobe <- true
+}
+
+func i64sender(c chan int64, strobe chan bool) {
+ c <- 234567
+ strobe <- true
+}
+
+func breceiver(c chan bool, strobe chan bool) {
+ if !<-c {
+ panic("b value")
+ }
+ strobe <- true
+}
+
+func bsender(c chan bool, strobe chan bool) {
+ c <- true
+ strobe <- true
+}
+
+func sreceiver(c chan string, strobe chan bool) {
+ if <-c != "hello" {
+ panic("s value")
+ }
+ strobe <- true
+}
+
+func ssender(c chan string, strobe chan bool) {
+ c <- "hello again"
+ strobe <- true
+}
+
+var ticker = time.Tick(10 * 1000) // 10 us
+func sleep() {
+ <-ticker
+ <-ticker
+ runtime.Gosched()
+ runtime.Gosched()
+ runtime.Gosched()
+}
+
+const maxTries = 10000 // Up to 100ms per test.
+
+func main() {
+ var i32 int32
+ var i64 int64
+ var b bool
+ var s string
+
+ var sync = make(chan bool)
+
+ for buffer := 0; buffer < 2; buffer++ {
+ c32 := make(chan int32, buffer)
+ c64 := make(chan int64, buffer)
+ cb := make(chan bool, buffer)
+ cs := make(chan string, buffer)
+
+ select {
+ case i32 = <-c32:
+ panic("blocked i32sender")
+ default:
+ }
+
+ select {
+ case i64 = <-c64:
+ panic("blocked i64sender")
+ default:
+ }
+
+ select {
+ case b = <-cb:
+ panic("blocked bsender")
+ default:
+ }
+
+ select {
+ case s = <-cs:
+ panic("blocked ssender")
+ default:
+ }
+
+ go i32receiver(c32, sync)
+ try := 0
+ Send32:
+ for {
+ select {
+ case c32 <- 123:
+ break Send32
+ default:
+ try++
+ if try > maxTries {
+ println("i32receiver buffer=", buffer)
+ panic("fail")
+ }
+ sleep()
+ }
+ }
+ <-sync
+
+ go i32sender(c32, sync)
+ if buffer > 0 {
+ <-sync
+ }
+ try = 0
+ Recv32:
+ for {
+ select {
+ case i32 = <-c32:
+ break Recv32
+ default:
+ try++
+ if try > maxTries {
+ println("i32sender buffer=", buffer)
+ panic("fail")
+ }
+ sleep()
+ }
+ }
+ if i32 != 234 {
+ panic("i32sender value")
+ }
+ if buffer == 0 {
+ <-sync
+ }
+
+ go i64receiver(c64, sync)
+ try = 0
+ Send64:
+ for {
+ select {
+ case c64 <- 123456:
+ break Send64
+ default:
+ try++
+ if try > maxTries {
+ panic("i64receiver")
+ }
+ sleep()
+ }
+ }
+ <-sync
+
+ go i64sender(c64, sync)
+ if buffer > 0 {
+ <-sync
+ }
+ try = 0
+ Recv64:
+ for {
+ select {
+ case i64 = <-c64:
+ break Recv64
+ default:
+ try++
+ if try > maxTries {
+ panic("i64sender")
+ }
+ sleep()
+ }
+ }
+ if i64 != 234567 {
+ panic("i64sender value")
+ }
+ if buffer == 0 {
+ <-sync
+ }
+
+ go breceiver(cb, sync)
+ try = 0
+ SendBool:
+ for {
+ select {
+ case cb <- true:
+ break SendBool
+ default:
+ try++
+ if try > maxTries {
+ panic("breceiver")
+ }
+ sleep()
+ }
+ }
+ <-sync
+
+ go bsender(cb, sync)
+ if buffer > 0 {
+ <-sync
+ }
+ try = 0
+ RecvBool:
+ for {
+ select {
+ case b = <-cb:
+ break RecvBool
+ default:
+ try++
+ if try > maxTries {
+ panic("bsender")
+ }
+ sleep()
+ }
+ }
+ if !b {
+ panic("bsender value")
+ }
+ if buffer == 0 {
+ <-sync
+ }
+
+ go sreceiver(cs, sync)
+ try = 0
+ SendString:
+ for {
+ select {
+ case cs <- "hello":
+ break SendString
+ default:
+ try++
+ if try > maxTries {
+ panic("sreceiver")
+ }
+ sleep()
+ }
+ }
+ <-sync
+
+ go ssender(cs, sync)
+ if buffer > 0 {
+ <-sync
+ }
+ try = 0
+ RecvString:
+ for {
+ select {
+ case s = <-cs:
+ break RecvString
+ default:
+ try++
+ if try > maxTries {
+ panic("ssender")
+ }
+ sleep()
+ }
+ }
+ if s != "hello again" {
+ panic("ssender value")
+ }
+ if buffer == 0 {
+ <-sync
+ }
+ }
+}