Componentpedia / Listings / malloc_size_of

Last update: 09/04/2026

malloc_size_of

Measure the heap size of values

Latest version: 0.1.1 registry icon
Maintenance score
60
Safety score
100
Popularity score
72
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Security
  Vulnerabilities
Version Suggest Low Medium High Critical
0.1.1 0 0 0 0 0
0.1.0 0 0 0 0 0

Stability
Latest release:

0.1.1 - This version is safe to use because it has no known security vulnerabilities at this time. Find out if your coding project uses this component and get notified of any reported security vulnerabilities with Meterian-X Open Source Security Platform

Licensing

Maintain your licence declarations and avoid unwanted licences to protect your IP the way you intended.

Apache-2.0   -   Apache License 2.0

Not a wildcard

Not proprietary

OSI Compliant

MIT   -   MIT License

Not a wildcard

Not proprietary

OSI Compliant

MallocSizeOf

Build Status Crates.io Docs Crates.io License dependency status

A an allocator-agnostic crate for measuring the runtime size of a value including the size of any heap allocations that are owned by that value.

This crate is used by both Servo and Firefox for memory usage calculation.

Features

  • It isn't bound to a particular heap allocator.
  • It provides traits for both "shallow" and "deep" measurement, which gives flexibility in the cases where the traits can't be used.
  • It allows for measuring blocks even when only an interior pointer can be obtained for heap allocations, e.g. HashSet and HashMap. (This relies on the heap allocator having suitable support, which jemalloc has.)
  • It allows handling of types like Rc and Arc by providing traits that are different to the ones for non-graph structures.