摘要：First confirm that you have root privilege. Second check the config of kernel that you have the configs on: Last you confirm you have your debugfs/tra 阅读全文

摘要：mutex( x lock): when a mutex lock is obtained, others cannot obtain the same mutex while the lock is not freed. shared lock( s lock): when a shared lo 阅读全文

摘要：libev First let's talk about libev, it is a lib used in ss. The coding style of libev is ugly. To see man page of libev by: man ./ev.3 3 files need to 阅读全文