CSP

gistfile1.txt

package main

import (
	"log"
	"time"
)

type cond struct {
	ch1   chan struct{}
	ch2   chan struct{}
	ch3   chan struct{}
	sema1 int32
	sema2 int32
}

func (c *cond) printA() {
	for {
		<-c.ch1

		log.Println("A")

		c.ch2 <- struct{}{}
	}

}

func (c *cond) printB() {

	for {
		<-c.ch2

		log.Println("B")

		c.ch3 <- struct{}{}
	}
}

func (c *cond) printC() {

	for {
		<-c.ch3

		log.Println("C")
		log.Println("--------------------------------")

		c.ch1 <- struct{}{}
	}
}

func main() {
	var con = new(cond)
	con.ch1 = make(chan struct{})
	con.ch2 = make(chan struct{})
	con.ch3 = make(chan struct{})

	go con.printC()
	go con.printB()
	go con.printA()

	con.ch1 <- struct{}{}

	time.Sleep(1 * time.Second)

}