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go/misc/cgo/stdio/chain.go
Yury Smolsky 57d40f1b27 test: remove rundircmpout and cmpout actions
This CL removes the rundircmpout action completely
because it is not used anywhere.

The run case already looks for output files. Rename the cmpout action
mentioned in tests to the run action and remove "cmpout" from run.go.

Change-Id: I835ceb70082927f8e9360e0ea0ba74f296363ab3
Reviewed-on: https://go-review.googlesource.com/115575
Run-TryBot: Yury Smolsky <yury@smolsky.by>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-31 17:36:45 +00:00

49 lines
932 B
Go

// run -tags=use_go_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.
// +build test_run
// Pass numbers along a chain of threads.
package main
import (
"runtime"
"strconv"
"../stdio"
)
const N = 10
const R = 5
func link(left chan<- int, right <-chan int) {
// Keep the links in dedicated operating system
// threads, so that this program tests coordination
// between pthreads and not just goroutines.
runtime.LockOSThread()
for {
v := <-right
stdio.Stdout.WriteString(strconv.Itoa(v) + "\n")
left <- 1 + v
}
}
func main() {
leftmost := make(chan int)
var left chan int
right := leftmost
for i := 0; i < N; i++ {
left, right = right, make(chan int)
go link(left, right)
}
for i := 0; i < R; i++ {
right <- 0
x := <-leftmost
stdio.Stdout.WriteString(strconv.Itoa(x) + "\n")
}
}