还会让您为数据库和事务输入预分配的大小。
It also asks you to enter a pre-allocated size for the database and transactions.
它使用预分配的内存池，但它不使用很清楚。
It does use a pre-allocated memory pool but it doesn't use it clearly.
该函数将错误代码和一个预分配的缓冲区作为参数。
It takes the error code and a pre-allocated buffer as its parameters.
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