win32job

Documentation

A safe API for Windows' job objects, which can be used to set various limits to processes associated with them.

[dependencies]
win32job = "2"

Examples

Limit the amount of memory that will be available for this process (allocating more memory is still possible, but it will be paged):

use win32job::{Job, ExtendedLimitInfo};

fn main() -> Result<(), Box<dyn std::error::Error>>  {
    let mut info = ExtendedLimitInfo::new();

    info.limit_working_memory(1 * 1024 * 1024, 4 * 1024 * 1024);

    let job = Job::create_with_limit_info(&mut info)?;

    job.assign_current_process()?;
    
    Ok(())
}

Force any created sub processes to exit when the main process exits:

use win32job::Job;
use std::process::Command;

fn main() -> Result<(), Box<dyn std::error::Error>>  {
    let job = Job::create()?;
    
    let mut info = job.query_extended_limit_info()?;

    info.limit_kill_on_job_close();

    job.set_extended_limit_info(&mut info)?;
    
    job.assign_current_process()?;

    Command::new("cmd.exe")
            .arg("/C")
            .arg("ping -n 9999 127.0.0.1")
            .spawn()?;

    // The cmd will be killed once we exit, or `job` is dropped.
    
    Ok(())
}

License

The win32job crate 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.