pwner

Pwner is a Process Owner crate that allows ergonomic access to child processes.

This module creates the possibility of owning a child and having convenient methods to read and write, while also killing the process gracefully upon dropping.

Spawning an owned process

```rust use std::process::Command; use pwner::Spawner;

Command::new("ls").spawn_owned().expect("ls command failed to start"); ```

Reading and writing

```rust use std::io::{BufRead, BufReader, Write}; use std::process::Command; use pwner::Spawner;

let mut child = Command::new("cat").spawnowned()?; child.writeall(b"hello\n")?;

let mut output = String::new(); let mut reader = BufReader::new(child); reader.read_line(&mut output)?;

assert_eq!("hello\n", output); ```

Stopping an owned process

The owned process is terminated whenever it is dropped.

Example

```rust use std::process::Command; use pwner::Spawner;

{ let child = Command::new("ls").spawn_owned().expect("ls command failed to start"); } // child is killed when dropped out of scope ```

Graceful dropping

Note: Only available on *nix platforms.

When the owned process gets dropped, Process will try to kill it gracefully by sending a SIGINT. If the process still doesn't die, a SIGTERM is sent and another chance is given, until finally a SIGKILL is sent.