22 lines
427 B
Rust
22 lines
427 B
Rust
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);
|
|
}
|
|
}
|