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ps_ppid() returns the parent pid, ps_parent() returns a ps_handle of the parent.

Usage

ps_ppid(p = ps_handle())

ps_parent(p = ps_handle())

Arguments

p

Process handle.

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.

Examples

p <- ps_handle()
p
#> <ps::ps_handle> PID=10076, NAME=R, AT=2022-06-18 08:48:43
ps_ppid(p)
#> [1] 1508
ps_parent(p)
#> <ps::ps_handle> PID=1508, NAME=Runner.Worker, AT=2022-06-18 08:46:57