haskell-mmap (Memory mapper for POSIX and Windows)

This library provides a wrapper to mmap(2) or MapViewOfFile,

allowing files or devices to be lazily loaded into memory as strict

or lazy ByteStrings, ForeignPtrs or plain Ptrs, using the virtual

memory subsystem to do on-demand loading. Modifications are also

supported.

https://hackage.haskell.org/package/mmap