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db9002f152
add programs, not yet described, to demonstrate servers. R=gri DELTA=279 (177 added, 16 deleted, 86 changed) OCL=15380 CL=15389
56 lines
1.2 KiB
Go
56 lines
1.2 KiB
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 BinOp (a, b int) int;
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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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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, quit *chan bool) {
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for {
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var request *Request;
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select {
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case request <- service: // can't say request := <-service here yet
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go Run(op, request); // don't wait for it
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case <-quit:
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return;
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}
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}
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}
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func StartServer(op *BinOp) (servch *chan *Request, quitch *chan bool) {
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service := new(chan *Request);
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quit := new(chan bool);
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go Server(op, service, quit);
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return service, quit;
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}
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func main() {
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adder, quit := 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 = new(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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quit -< true;
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}
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