Add PidFd::{kill, wait, try_wait} #124101
Open
+252
−117
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#117957 changed
Child
kill/wait/try_wait to use its pidfd instead of the pid, when one is available.This PR extracts those implementations and makes them available on
PidFd
directly.The
PidFd
implementations differs significantly from the correspondingChild
methods:Child
unless something stole the zombie childExitStatus
is not kept, meaning that only the first time a wait succeeds it will be returnedwait
does not close stdinwait
only requires&self
instead of&mut self
since there is no state to maintain and subsequent calls are safeTracking issue: #82971