Crates.io | malloc-best-effort |
lib.rs | malloc-best-effort |
version | 0.1.4 |
created_at | 2025-05-26 01:08:36.304221+00 |
updated_at | 2025-06-14 14:26:39.180679+00 |
description | A Rust wrapper over Google's TCMalloc and Microsoft's MIMalloc memory allocators |
homepage | |
repository | https://github.com/maratik123/malloc-best-effort |
max_upload_size | |
id | 1688832 |
size | 20,003 |
GlobalAllocator implementation best suited for a target platform
It uses tcmalloc-better on linux (x86_64, aarch64) and mimalloc on other platforms. Both wrappers are based on general-purpose, performance-oriented allocators built by Google and Microsoft respectively.
src/main.rs
:use malloc_best_effort::BEMalloc;
#[global_allocator]
static GLOBAL: BEMalloc = BEMalloc::new();
fn main() {
BEMalloc::init();
// Rest of main
}
build.rs
to workaround mimalloc build dependencies:use std::borrow::Cow;
use std::env;
fn main() {
let target_os = env::var("CARGO_CFG_TARGET_OS").expect("target_os not defined!");
let target_arch = env::var("CARGO_CFG_TARGET_ARCH").expect("target_arch not defined!"); // on armv6 we need to link with libatomic
if target_os == "linux" && target_arch == "arm" {
// Embrace the atomic capability library across various platforms.
// For instance, on certain platforms, llvm has relocated the atomics of the arm32 architecture to libclang_rt.builtins.a
// while some use libatomic.a, and others use libatomic_ops.a.
let atomic_name = match env::var("DEP_ATOMIC") {
Ok(atomic_name) => Cow::Owned(atomic_name),
Err(_) => Cow::Borrowed("atomic"),
};
println!("cargo:rustc-link-lib={atomic_name}");
}
// Link with libs needed on Windows
if target_os == "windows" {
// https://github.com/microsoft/mimalloc/blob/af21001f7a65eafb8fb16460b018ebf9d75e2ad8/CMakeLists.txt#L487
for lib in ["psapi", "shell32", "user32", "advapi32", "bcrypt"] {
println!("cargo:rustc-link-lib={lib}");
}
}
}
A C/C++ compilers are required for building allocator with cargo.