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搜索关键字:locks    ( 533个结果
函数fsp_get_space_header
/**********************************************************************//**Gets a pointer to the space header and x-locks its page.@return pointer ...
分类:其他好文   时间:2015-11-25 21:51:54    阅读次数:188
Lock&Condition实现线程同步通信
importjava.util.concurrent.locks.Condition; importjava.util.concurrent.locks.Lock; importjava.util.concurrent.locks.ReentrantLock; publicclassConditionCommunication{ finalBusinessbusiness=newBusiness(); publicstaticvoidmain(String[]args){ newConditionComm..
分类:编程语言   时间:2015-11-25 19:38:54    阅读次数:224
Operating System: Three Easy Pieces --- Locks: Test and Set (Note)
Because disabling interrupts does not work on multiple processors, system designers started toinvent hardware support for locking. The earliest multip...
分类:其他好文   时间:2015-11-24 14:46:59    阅读次数:143
两个线程与stringbuffer和stringbuiler以及lock synchronized线程测试
1 import java.util.concurrent.locks.Lock; 2 import java.util.concurrent.locks.ReentrantLock; 3 4 public class RunnableTest2 { 5 // private Strin...
分类:编程语言   时间:2015-11-22 20:14:48    阅读次数:124
Operating System: Three Easy Pieces --- Locks: Pthread Locks (Note)
The name that the POSIX library uses for a lock is mutex, as it is used to provide mutual exclusionbetween threads, i.e., if one thread is in the crit...
分类:其他好文   时间:2015-11-22 13:44:42    阅读次数:173
函数fsp_get_space_header
/**********************************************************************//**Gets a pointer to the space header and x-locks its page.@return pointer ...
分类:其他好文   时间:2015-11-16 15:48:02    阅读次数:153
Java并发包中Lock的实现原理
Lock 的简介及使用 Lock是java 1.5中引入的线程同步工具,它主要用于多线程下共享资源的控制。本质上Lock仅仅是一个接口(位于源码包中的java\util\concurrent\locks中),它包含以下方法//尝试获取锁,获取成功则返回,否则阻塞当前线程 void lock(); /...
分类:编程语言   时间:2015-11-16 14:04:17    阅读次数:163
Intention Locks && Intention Locking Protocol
Intention Locks && Intention Locking Protocol http://dev.mysql.com/doc/refman/5.6/en/glossary.html#glos_intention_lock intention lock A kind of lock that applies to the table level, used to indicat...
分类:其他好文   时间:2015-11-14 19:27:28    阅读次数:365
Lock
从Java 5之后,在java.util.concurrent.locks包下提供了另外一种方式来实现同步访问,那就是Lock。synchronized是java中的一个关键字,也就是说是Java语言内置的特性。那么为什么会出现Lock呢? 在上面一篇文章中,我们了解到如果一个代码块被synchr....
分类:其他好文   时间:2015-11-13 22:06:08    阅读次数:321
oracle 存储过程编辑 卡死
一、可用SYS登录,二、查锁session_ID查找存储过程OPERATIONDATA_IMP被哪些session锁住而无法编译select * FROM dba_ddl_locks where name =upper('OPERATIONDATA_IMP');三、查出sid serial#从而得到...
分类:数据库   时间:2015-11-03 17:27:12    阅读次数:248
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