golang 锁bug 记录

例如 会先获取了读锁，协程里面有个写锁，如果整体还嵌套了读锁，直接出现死锁了 ，卡在all_lock_test.RLock() ，读锁永远也不能释放了

package routes

import (
	"fmt"
	"sync"
	"testing"
	"time"
)

var all_lock_test sync.RWMutex

func TestSendGiftInfo_SendBlind(t *testing.T) {
	if !all_lock_test.TryRLock() {
		return
	}
	defer all_lock_test.RUnlock()

	go func() {
		all_lock_test.Lock()
		defer all_lock_test.Unlock()
		fmt.Println("配置更新")
	}()
	time.Sleep(time.Second)
	rDeal()

}

func rDeal() {
	all_lock_test.RLock()
	defer all_lock_test.RUnlock()
	fmt.Println("处理业务完毕")
}