Function unshare::child_events[−][src]

pub fn child_events() -> ChildEventsIterator

Creates iterator over child events

On each iteration it calls waitpid() and returns one of the events described in ChildEvent.

The operation is non-blocking. The iterator is exhausted when there are no zombie process at the moment.

Alternatively see a simpler reap_zombies() function.

Example

So waiting for all processes to finish may look like this:

ⓘ
    while alive.len() > 0 {
        sigwait()
        for event in zombies() {
            match event {
                Death(pid, _) => alive.remove(pid),
                Stop(..) => {}
                Continue(..) => {}
        }
    }

Important Notes

  • If you are using this function you can’t reliably use Child::wait any more.
  • If you got SIGCHLD you must exhaust this iterator until waiting for next signal, or you will have zombie processes around