jemalloc-ctl

A safe wrapper over jemalloc's mallctl*() control and introspection APIs.

Documentation

Platform support

Supported on all platforms supported by the jemallocator crate.

Example

extern crate jemallocator;
extern crate jemalloc_ctl;

use std::thread;
use std::time::Duration;
use jemalloc_ctl::{stats, epoch};

#[global_allocator]
static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;

fn main() {
    // Obtain a MIB for the `epoch`, `stats.allocated`, and
    // `atats.resident` keys:
    let e = epoch::mib().unwrap();
    let allocated = stats::allocated::mib().unwrap();
    let resident = stats::resident::mib().unwrap();
    
    loop {
        // Many statistics are cached and only updated 
        // when the epoch is advanced:
        e.advance().unwrap();
        
        // Read statistics using MIB key:
        let allocated = allocated.read().unwrap();
        let resident = resident.read().unwrap();
        println!("{} bytes allocated/{} bytes resident", allocated, resident);
        thread::sleep(Duration::from_secs(10));
    }
}

License

This project is licensed under either of

Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in jemalloc-ctl by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

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