Special system calls, or requests to the UNIX kernel, allocate and free the memory and set permissions; common read and write operations put and get data from the region.

用特殊的系统调用(即对UNIX内核的请求)分配和释放内存并设置权限；通过一般的读写操作读写内存段中的数据。

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Exploiting the feature of main memory database, we put forward pre-analysis based conflict-free concurrency algorithm by determining the read and write set of the transaction in advance.

考虑到主存数据库特点，通过在事务预分析时确定事务的读写集合，文章给出了一种基于预分析的无冲突并发控制方法。

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Ensure that the file is not marked read-only and that your computer has enough free memory and disk space.

确保文件未标记为只读，并且计算机有足够的可用内存和磁盘空间。

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