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// 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. //go:build ignore // Compute Fibonacci numbers with two goroutines // that pass integers back and forth. No actual // concurrency, just threads and synchronization // and foreign code on multiple pthreads. package main import ( big "." "runtime" ) func fibber(c chan *big.Int, out chan string, n int64) { // Keep the fibbers in dedicated operating system // threads, so that this program tests coordination // between pthreads and not just goroutines. runtime.LockOSThread() i := big.NewInt(n) if n == 0 { c <- i } for { j := <-c out <- j.String() i.Add(i, j) c <- i } } func main() { c := make(chan *big.Int) out := make(chan string) go fibber(c, out, 0) go fibber(c, out, 1) for i := 0; i < 200; i++ { println(<-out) } }
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fib.go
go
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2024-02-02 18:09
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gmp.go
go
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pi.go
go
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2024-02-02 18:09
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