mybatis的mapper映射文件的加载(resource方式,class方式,以及包扫描)

package main

import (
	"fmt"
	"time"
)

type Pool struct {
	work chan func()   // 任务
	size chan struct{} // 数量
}

func New(size int) *Pool {
	return &Pool{
		work: make(chan func()),
		size: make(chan struct{}, size),
	}
}
func (p *Pool) worker(task func()) {
	fmt.Println(111)
	defer func() { <-p.size }()
	for {
		task()
		<-p.work
	}
	fmt.Println(222)
}
func (p *Pool) NewTask(task func()) {
	select {
	case p.work <- task:
		fmt.Println(333)
	case p.size <- struct{}{}:
		fmt.Println(444)
		go p.worker(task)
	}
}

func main() {
	pool := New(2)

	for i := 1; i < 5; i++ {
		pool.NewTask(func() {
			time.Sleep(2 * time.Second)
			fmt.Println(time.Now())
		})
	}

	// 保证所有的协程都执行完毕
	time.Sleep(10 * time.Second)
}