golang多协程并发工作示例

 

golang多协程并发工作

package main

import (
	"fmt"
	"log"
	"os"
	"sync"
	"time"
)

type Task struct {
	Name string
	Age  int
}

func work(wg *sync.WaitGroup, jobs chan Task, w int, logger *log.Logger) {
	defer wg.Done()
	for true {
		job, ok := <-jobs
		if !ok {
			break
		}
		logger.Printf("[%d]name=%s age=%d\n", w, job.Name, job.Age)
	}
}

func main() {

	start := time.Now()
	file, err := os.OpenFile("info.log", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
	if err != nil {
		panic(err)
	}
	defer file.Close()
	gLogger := log.New(file, "", log.Ldate|log.Ltime|log.Lshortfile)
	gLogger.Println("[main] ready go")

	wg := &sync.WaitGroup{}
	jobs := make(chan Task)

	workers := 10
	for w := 0; w < workers; w++ {
		wg.Add(1)
		go work(wg, jobs, w, gLogger)
	}

	for i := 0; i < 10000; i++ {
		task := Task{
			Name: fmt.Sprintf("Name-%d", i),
			Age:  i,
		}
		jobs <- task
	}
	close(jobs)
	wg.Wait()

	gLogger.Printf("[main] done, cost: %s", time.Now().Sub(start))

}