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LeeHao | Leehao's Homepage about Database Internals.
在main槽中我们一共初始化 43,对于其中各个LWLock对象所起的作用可以参考 lwlocknames.h中所给出的描述。由于这些轻量锁在系统初始化时候已经创建,因此我们可以使用形如LWLockAcquire(CLogControlLock, LW_EXCLUSIVE);这样的语句来访问这些锁对象;buffer mapping中共有128个LWLock对象;而在Lock Manager与Pre...