pub fn waitpgid(pgid: Pid, waitopts: WaitOptions) -> Result<Option<WaitStatus>>Expand description
waitpid(-pgid, waitopts)—Wait for a process in a specific process group
to change state.
The call will wait for any child process with the given pgid.
On Success, returns the status of the selected process.
If NOHANG was specified in the options, and no selected child process
changed state, returns None.