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purpleprotocol/mimalloc_rust

A Rust wrapper over Microsoft's MiMalloc memory allocator

Mimalloc Rust

Latest Version Documentation

A drop-in global allocator wrapper around the mimalloc allocator.
Mimalloc is a general purpose, performance oriented allocator built by Microsoft.

Usage

use mimalloc::MiMalloc;

#[global_allocator]
static GLOBAL: MiMalloc = MiMalloc;

Requirements

A C compiler is required for building mimalloc with cargo.

Usage with secure mode

Using secure mode adds guard pages,
randomized allocation, encrypted free lists, etc. The performance penalty is usually
around 10% according to mimalloc
own benchmarks.

To enable secure mode, put in Cargo.toml:

[dependencies]
mimalloc = { version = "*", features = ["secure"] }

Usage with v3

By default this library uses mimalloc v2.
To enable v3, put in Cargo.toml:

[dependencies]
mimalloc = { version = "*", features = ["v3"] }

Languages

Rust99.4%C0.6%
MIT License
Created June 24, 2019
Updated March 11, 2026
purpleprotocol/mimalloc_rust | GitHunt