mirror of
https://github.com/golang/go
synced 2024-11-17 23:04:56 -07:00
5a1d3323fe
parsing and printing to new syntax.
Use -oldparser to parse the old syntax,
use -oldprinter to print the old syntax.
2) Change default gofmt formatting settings
to use tabs for indentation only and to use
spaces for alignment. This will make the code
alignment insensitive to an editor's tabwidth.
Use -spaces=false to use tabs for alignment.
3) Manually changed src/exp/parser/parser_test.go
so that it doesn't try to parse the parser's
source files using the old syntax (they have
new syntax now).
4) gofmt -w src misc test/bench
1st set of files.
R=rsc
CC=agl, golang-dev, iant, ken2, r
https://golang.org/cl/180047
44 lines
903 B
Go
44 lines
903 B
Go
// 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.
|
|
|
|
// 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 "gmp"
|
|
"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)
|
|
}
|
|
}
|