cosmic/malloc.rs
// Copyright 2025 System76 <info@system76.com>
// SPDX-License-Identifier: MPL-2.0
use std::os::raw::c_int;
const M_MMAP_THRESHOLD: c_int = -3;
extern "C" {
fn malloc_trim(pad: usize);
fn mallopt(param: c_int, value: c_int) -> c_int;
}
pub fn trim(pad: usize) {
unsafe {
malloc_trim(pad);
}
}
/// Prevents glibc from hoarding memory via memory fragmentation.
pub fn limit_mmap_threshold(threshold: i32) {
unsafe {
mallopt(M_MMAP_THRESHOLD, threshold as c_int);
}
}