Crate waitpidx 

Wait for Linux processes by PID, even if they are not child processes.

This crate uses pidfd_open(2) and exposes both synchronous and asynchronous waiting APIs.

Platform

• Linux only
• Kernel 5.3+ (pidfd_open)

Features

• async (default): enables Tokio-based async APIs

Examples

Synchronous wait with timeout:

use std::{
    process::Command,
    time::Duration,
};

let mut child = Command::new("sleep").arg("0.1").spawn().unwrap();
waitpidx::waitpid(child.id(), Some(Duration::from_secs(3))).unwrap();
child.wait().unwrap();

Asynchronous wait (requires async feature):

use std::process::Command;

let mut child = Command::new("sleep").arg("0.1").spawn().unwrap();
waitpidx::waitpid_async(child.id()).await.unwrap();
child.wait().unwrap();

Modules

pidfd

pidfd-based wait primitives.

Structs

Pid

pid_t—A non-zero Unix process ID.

Functions

process_exists

Return whether a process currently exists.

waitpid

Wait for a process to exit.

waitpid_async

Wait asynchronously for a process to exit.