死锁案例
https://help.aliyun.com/knowledge_detail/85300.html?spm=a2c4g.11186631.2.19.69c718d4pnKRo4
@@@build beautiful things, share happiness@@@
https://help.aliyun.com/knowledge_detail/85300.html?spm=a2c4g.11186631.2.19.69c718d4pnKRo4