mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-22 06:44:35 +00:00
64 lines
1.8 KiB
Rust
64 lines
1.8 KiB
Rust
//@ run-pass
|
|
//@ ignore-wasm32 no processes
|
|
//@ ignore-sgx no processes
|
|
//@ ignore-vxworks no 'ps'
|
|
//@ ignore-fuchsia no 'ps'
|
|
//@ ignore-nto no 'ps'
|
|
|
|
#![feature(rustc_private)]
|
|
|
|
use std::process::Command;
|
|
|
|
// The output from "ps -A -o pid,ppid,args" should look like this:
|
|
// PID PPID COMMAND
|
|
// 1 0 /sbin/init
|
|
// 2 0 [kthreadd]
|
|
// ...
|
|
// 6076 9064 /bin/zsh
|
|
// ...
|
|
// 7164 6076 ./spawn-failure
|
|
// 7165 7164 [spawn-failure] <defunct>
|
|
// 7166 7164 [spawn-failure] <defunct>
|
|
// ...
|
|
// 7197 7164 [spawn-failure] <defunct>
|
|
// 7198 7164 ps -A -o pid,ppid,command
|
|
// ...
|
|
|
|
#[cfg(unix)]
|
|
fn find_zombies() {
|
|
extern crate libc;
|
|
let my_pid = unsafe { libc::getpid() };
|
|
|
|
// https://pubs.opengroup.org/onlinepubs/9699919799/utilities/ps.html
|
|
let ps_cmd_output = Command::new("ps").args(&["-A", "-o", "pid,ppid,args"]).output().unwrap();
|
|
let ps_output = String::from_utf8_lossy(&ps_cmd_output.stdout);
|
|
|
|
for (line_no, line) in ps_output.split('\n').enumerate() {
|
|
if 0 < line_no && 0 < line.len() &&
|
|
my_pid == line.split(' ').filter(|w| 0 < w.len()).nth(1)
|
|
.expect("1st column should be PPID")
|
|
.parse().ok()
|
|
.expect("PPID string into integer") &&
|
|
line.contains("defunct") {
|
|
panic!("Zombie child {}", line);
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(windows)]
|
|
fn find_zombies() { }
|
|
|
|
fn main() {
|
|
let too_long = format!("/NoSuchCommand{:0300}", 0u8);
|
|
|
|
let _failures = (0..100).map(|_| {
|
|
let mut cmd = Command::new(&too_long);
|
|
let failed = cmd.spawn();
|
|
assert!(failed.is_err(), "Make sure the command fails to spawn(): {:?}", cmd);
|
|
failed
|
|
}).collect::<Vec<_>>();
|
|
|
|
find_zombies();
|
|
// then _failures goes out of scope
|
|
}
|