mirror of
https://github.com/golang/go
synced 2024-11-22 18:14:42 -07:00
0432f289f7
* remember #defined names, so that C.stdout can refer
to the real name (on OS X) __stdoutp.
* better handling of #defined constant expressions
* allow n, err = C.strtol("asdf", 0, 123) to get errno as os.Error
* write all output files to current directory
* don't require gcc output if there was no input
Fixes #533.
Fixes #709.
Fixes #756.
R=r
CC=dho, golang-dev, iant
https://golang.org/cl/1734047
48 lines
928 B
Go
48 lines
928 B
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Compute Fibonacci numbers with two goroutines
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// that pass integers back and forth. No actual
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// concurrency, just threads and synchronization
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// and foreign code on multiple pthreads.
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package main
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import (
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"runtime"
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"stdio"
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"strconv"
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)
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func fibber(c, out chan int64, i int64) {
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// Keep the fibbers in dedicated operating system
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// threads, so that this program tests coordination
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// between pthreads and not just goroutines.
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runtime.LockOSThread()
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if i == 0 {
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c <- i
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}
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for {
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j := <-c
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stdio.Stdout.WriteString(strconv.Itoa64(j) + "\n")
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out <- j
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<-out
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i += j
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c <- i
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}
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}
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func main() {
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c := make(chan int64)
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out := make(chan int64)
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go fibber(c, out, 0)
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go fibber(c, out, 1)
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<-out
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for i := 0; i < 90; i++ {
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out <- 1
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<-out
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}
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}
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