mirror of
https://github.com/golang/go
synced 2024-11-23 09:30:03 -07:00
52 lines
969 B
Go
52 lines
969 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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package main
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import "fmt"
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type request struct {
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a, b int
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replyc chan int
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}
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type binOp func(a, b int) int
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func run(op binOp, req *request) {
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reply := op(req.a, req.b)
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req.replyc <- reply
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}
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func server(op binOp, service chan *request) {
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for {
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req := <-service
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go run(op, req) // don't wait for it
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}
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}
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func startServer(op binOp) chan *request {
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req := make(chan *request)
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go server(op, req)
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return req
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}
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func main() {
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adder := startServer(func(a, b int) int { return a + b })
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const N = 100
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var reqs [N]request
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for i := 0; i < N; i++ {
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req := &reqs[i]
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req.a = i
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req.b = i + N
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req.replyc = make(chan int)
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adder <- req
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}
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for i := N-1; i >= 0; i-- { // doesn't matter what order
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if <-reqs[i].replyc != N + 2*i {
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fmt.Println("fail at", i)
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}
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}
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fmt.Println("done")
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}
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