Low level page manager in C/C++

I need a library (C/C++) that handles the basic operations of a low level pager layer on disk. The library must include methods to get a disk page, add data, write the page to disk etc.

To give a bit of background: Assume there's a particular dataset which runs query q. I have a particular grouping of the data on disk so that q can be processed faster. This library will help me write the data in pages, according to the grouping.

Appreciate any suggestions.

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You don't specify the OS, but that doesn't really matter: all common OS'es bar this outright. Instead, use a memory-mapped file. To read a page from disk, just read from memory and the OS will ( if needed ) perform a disk read. Writing to disk will be mostly on-demand but usually can be done explicitly on demand.

As for your "dataset running query q", that just doesn't make sense. Queries are code not data. Do you perhaps have a query Q run over a dataset D?

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