存储和缓冲区管理器

[fusir7]

buffer_LRU.h:
主要定义了各种实验所需的结构，主要是定义了缓存控制块结构体（Buffer Control Blocks，BCB）、LRU类和DiskSpaceManager类的相关变量和函数。
buffer_LRU.cpp:
主要是调用buffer_ljz.h，进行数据库文件atabase.dbf建立、读写、检测，以及读取验证用的trace文件data-5w-50w-zipf.txt，输出IO总数、命中总数、命中率、平均读写时间等性能指标。

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[nautaa]

你是在基于 miniob 做一些自己的实验吗