#SLOCK

MySQL Error number: MY-010640; Symbol: ER_NDB_CLEAR_SLOCK_INFO; SQLSTATE: HY000

文档解释Errornumber:MY-010640;Symbol:ER_NDB_CLEAR_SLOCK_INFO;SQLSTATE:HY000Message:NDB:CLEAR_SLOCKkey:%s(%u/%u)%x%08x,from%sto%x%08x错误说明MySQL错误号MY-010640,ER_NDB_CLE...

MySQL Error number: MY-010636; Symbol: ER_NDB_BINLOG_CANT_RELEASE_SLOCK; SQLSTATE: HY000

文档解释Errornumber:MY-010636;Symbol:ER_NDB_BINLOG_CANT_RELEASE_SLOCK;SQLSTATE:HY000Message:NDB:Couldnotreleaseslockon‘%s.%s’,Errorcode:%dMessage:%sErro...

Ubuntu下交换CTRL与CAPSLOCK

1.编辑文件keyboardsudovim/etc/default/keyboard2.添加内容XKBOPTIONS="ctrl:swapcaps"3.reboot或者输入以下命令:sudodpkg-reconfigurekeyboard-configuration ...
代码星球 ·2020-08-09

Object-C 多线程中锁的使用-NSLock

在多线程的编程环境中,锁的使用必不可少!于是,今天来总结一下为共享资源加锁的操作方法。 一、使用synchronized方式     //线程1    dispatch_async(dispatch_get_global...