8 releases
0.1.8 | Nov 15, 2022 |
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0.1.7 | Oct 22, 2021 |
0.1.5 | Nov 15, 2020 |
0.1.3 | Apr 7, 2020 |
#515 in Asynchronous
43 downloads per month
Used in rucline
52KB
601 lines
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
use std::process::Command;
use pwner::Spawner;
Command::new("ls").spawn_owned().expect("ls command failed to start");
Reading and writing
use std::io::{BufRead, BufReader, Write};
use std::process::Command;
use pwner::Spawner;
let mut child = Command::new("cat").spawn_owned()?;
child.write_all(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
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.
Dependencies
~1.5–9MB
~90K SLoC