ps_ppid() returns the parent pid, ps_parent() returns a ps_handle
of the parent.
Value
ps_ppid() returns and integer scalar, the pid of the parent
of p. ps_parent() returns a ps_handle.
Details
On POSIX systems, if the parent process terminates, another process
(typically the pid 1 process) is marked as parent. ps_ppid() and
ps_parent() will return this process then.
Both ps_ppid() and ps_parent() work for zombie processes.
See also
Other process handle functions:
ps_children(),
ps_cmdline(),
ps_connections(),
ps_cpu_times(),
ps_create_time(),
ps_cwd(),
ps_descent(),
ps_environ(),
ps_exe(),
ps_handle(),
ps_interrupt(),
ps_is_running(),
ps_kill(),
ps_memory_info(),
ps_name(),
ps_num_fds(),
ps_num_threads(),
ps_open_files(),
ps_pid(),
ps_resume(),
ps_send_signal(),
ps_shared_libs(),
ps_status(),
ps_suspend(),
ps_terminal(),
ps_terminate(),
ps_uids(),
ps_username()
Examples
p <- ps_handle()
p
#> <ps::ps_handle> PID=6099, NAME=R, AT=2024-09-13 08:10:36.35
ps_ppid(p)
#> [1] 1668
ps_parent(p)
#> <ps::ps_handle> PID=1668, NAME=Runner.Worker, AT=2024-09-13 08:09:03.63