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memmapix

A pure Rust library for cross-platform memory mapped IO, which replaces libc with rustix

by Al Liu, Dan Burkert, Yevhenii Reizner, The Contributors

7 unstable releases (3 breaking)

0.9.0 Apr 23, 2026
0.8.0 Apr 22, 2026
0.7.6 Sep 18, 2023
0.7.3 Mar 11, 2023
0.6.3 Jul 3, 2022

#87 in Memory management

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30,972 downloads per month
Used in 9 crates (3 directly)

MIT/Apache

155KB
2.5K SLoC

memmapix

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docs.rs crates.io crates.io license

A pure Rust library for cross-platform memory mapped IO, which replaces libc with rustix.

The project is modified based on the memmap2-rs.

Features

  • file-backed memory maps
  • anonymous memory maps
  • synchronous and asynchronous flushing
  • copy-on-write memory maps
  • read-only memory maps
  • stack support (MAP_STACK on unix)
  • executable memory maps
  • huge page support

A list of supported/tested targets can be found in Actions.

License

memmapix is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE, LICENSE-MIT for details.

Copyright (c) 2026 Al Liu

Copyright (c) 2020 Yevhenii Reizner

Copyright (c) 2015 Dan Burkert

Dependencies

~1.4–6.5MB
~163K SLoC