Understanding Golang Channel with producer consumers

This is a creation in Article, where the information may have evolved or changed.

Golang realize multi-producer and multi-consumer:

package mainimport (    "fmt"    "time")func consumer(cname string, ch chan int) {    for i := range ch {        fmt.Println("consumer--", cname, ":", i)    }    fmt.Println("ch closed.")}func producer(pname string, ch chan int) {    for i := 0; i < 4; i++ {        fmt.Println("producer--", pname, ":", i)        ch <- i    }}func main() {    //用channel来传递"产品", 不再需要自己去加锁维护一个全局的阻塞队列    data := make(chan int)    go producer("生产者1", data)    go producer("生产者2", data)    go consumer("消费者1", data)    go consumer("消费者2", data)    time.Sleep(10 * time.Second)    close(data)    time.Sleep(10 * time.Second)}

Operation Result:

D:/Go/pv/pv.exe  [D:/Go/pv]producer-- 生产者2 : 0producer-- 生产者2 : 1producer-- 生产者2 : 2producer-- 生产者1 : 0consumer-- 消费者2 : 1consumer-- 消费者2 : 2consumer-- 消费者2 : 0producer-- 生产者1 : 1producer-- 生产者1 : 2consumer-- 消费者2 : 1consumer-- 消费者2 : 2producer-- 生产者1 : 3consumer-- 消费者2 : 3consumer-- 消费者1 : 0producer-- 生产者2 : 3consumer-- 消费者2 : 3ch closed.ch closed.成功: 进程退出代码 0.

It can be seen that using Golang to achieve producer consumers is very simple, PV operation does not require a variety of lock unlock, The secret lies in the CSP model, that is, Golang advocated using communication instead of shared memory.