memory-mapping

Rather than accessing data files directly via the file system with every file access, data files can be paged into memory the same as process files, resulting in much

faster accesses ( except of course when page-faults occur. ) This is known as memory-mapping a file.

9.7.2 Shared Memory in the Win32 API
Windows implements shared memory using shared memory-mapped files


http://www.cs.uic.edu/~jbell/CourseNotes/OperatingSystems/9_VirtualMemory.html