可以直接拿去當成一個庫來用
舉例
package main
import "your/path/to/.../Concurrence"
//定義一個實現Job接口的數據
type Score struct {
Num int
}
//定義對數據的處理
func (s *Score) Do() {
fmt.Println("num:", s.Num)
time.Sleep(1 * 1 * time.Second)
}
func main() {
num := 100 * 100 * 20
// debug.SetMaxThreads(num + 1000) //設置最大線程數
// 註冊工作池,傳入任務
// 參數1 worker併發個數
p := NewWorkerPool(num)
p.Run()
//寫入一億條數據
datanum := 100 * 100 * 100 * 100
go func() {
for i := 1; i <= datanum; i++ {
sc := &Score{Num: i}
p.JobQueue <- sc //數據傳進去會被自動執行Do()方法,具體對數據的處理自己在Do()方法中定義
}
}()
//循環打印輸出當前進程的Goroutine 個數
for {
fmt.Println("runtime.NumGoroutine() :", runtime.NumGoroutine())
time.Sleep(2 * time.Second)
}
}
Concurrence.go
package Concurrence
import "fmt"
// --------------------------- Job ---------------------
type Job interface {
Do()
}
// --------------------------- Worker ---------------------
type Worker struct {
JobQueue chan Job
}
func NewWorker() Worker {
return Worker{JobQueue: make(chan Job)}
}
func (w Worker) Run(wq chan chan Job) {
go func() {
for {
wq <- w.JobQueue
select {
case job := <-w.JobQueue:
job.Do()
}
}
}()
}
// --------------------------- WorkerPool ---------------------
type WorkerPool struct {
workerlen int
JobQueue chan Job
WorkerQueue chan chan Job
}
func NewWorkerPool(workerlen int) *WorkerPool {
return &WorkerPool{
workerlen: workerlen,
JobQueue: make(chan Job),
WorkerQueue: make(chan chan Job, workerlen),
}
}
func (wp *WorkerPool) Run() {
fmt.Println("初始化worker")
//初始化worker
for i := 0; i < wp.workerlen; i++ {
worker := NewWorker()
worker.Run(wp.WorkerQueue)
}
// 循環獲取可用的worker,往worker中寫job
go func() {
for {
select {
case job := <-wp.JobQueue:
worker := <-wp.WorkerQueue
worker <- job
}
}
}()
}
// --------------- 使用 --------------------
/*
type Score struct {
Num int
}
func (s *Score) Do() {
fmt.Println("num:", s.Num)
time.Sleep(1 * 1 * time.Second)
}
func main() {
num := 100 * 100 * 20
// debug.SetMaxThreads(num + 1000) //設置最大線程數
// 註冊工作池,傳入任務
// 參數1 worker併發個數
p := NewWorkerPool(num)
p.Run()
datanum := 100 * 100 * 100 * 100
go func() {
for i := 1; i <= datanum; i++ {
sc := &Score{Num: i}
p.JobQueue <- sc
}
}()
for {
fmt.Println("runtime.NumGoroutine() :", runtime.NumGoroutine())
time.Sleep(2 * time.Second)
}
}
*/