mirror of
https://github.com/golang/go
synced 2024-11-13 18:00:30 -07:00
40d5435278
add a section on printing add a section on allocation R=rsc DELTA=500 (278 added, 15 deleted, 207 changed) OCL=22381 CL=22456
50 lines
997 B
Go
50 lines
997 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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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 (a, b int) int;
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func Run(op *BinOp, request *Request) {
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result := op(request.a, request.b);
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request.replyc <- result;
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}
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func Server(op *BinOp, service chan *Request) {
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for {
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request := <-service;
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go Run(op, request); // 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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print("fail at ", i, "\n");
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}
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}
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print("done\n");
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}
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