Documentaiton claims 2GB limit on memory mapped IO

NumericalFunctional 21 Reputation points

This document at



The size of a file mapping object that is backed by a named file is limited by disk space. The size of a file view is limited to the largest available contiguous block of unreserved virtual memory. This is at most 2 GB minus the virtual memory already reserved by the process.

Surly this is vestigial. It suggests the document is quite old.

Is there some new way of doing Memory Mapped IO that I should be using?

Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
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