52 说一下 synchronized 底层实现原理？

说一下 synchronized 底层实现原理？

答：

今天的信息量太大，synchronized的概念也太重要，先放一天吧。
链接：

https://www.baidu.com/link?url=D0YsM3VxKADKw3IGsMe7uE8TSQZzyBSK3d4CA9Bd6CrAynrM7qSEtHkKOJFBz5LZ&wd=&eqid=a6399af20001155f000000065eba16b8

https://www.baidu.com/link?url=e4MkX89KtFwtGVv2Ad6M_dIIXRNpjdkAfDxx9OpPvNGPIstxWmJcUOVy34gU0OLa9Lmc4MuS3sJLwn6oDUbAa1lSiRDK179GwIth_CSBPaW&wd=&eqid=a6399af20001155f000000065eba16b8

https://cloud.tencent.com/developer/article/1465413

https://www.baidu.com/link?url=I2iwi31BYXFinfsxUV_kaY1drnRwADGuUtX4PgZL5My1-7RCCBH6IQ3Uhgzt_k0oer3_cvSbGyJQqqF0y-t_cq&wd=&eqid=a6399af20001155f000000065eba16b8

https://www.baidu.com/link?url=qm2ctpVEr6C_TcOi9jvTSaJnU5ZergvI375y4qgOLiESpeHpqYvkUCleQaMXLUfZeWkZxIuJ8ZBuMDYd73b0NayHaJPXhHdtaYG3Hb5YlBu&wd=&eqid=a6399af20001155f000000065eba16b8

https://www.baidu.com/link?url=ZojI4a1vJ_yyu1vvYyWlowScCvvc4zPK8z_l5sCn4C76WU-r6bG9PoPinHwM0lT3_AAtRJacJqw5tdfB6mviz_&wd=&eqid=a6399af20001155f000000065eba16b8