Query the parent processes recursively, up to the first process.
(On some platforms, like Windows, the process tree is not a tree
and may contain loops, in which case ps_descent() only goes up
until the first repetition.)
ps_descent(p = ps_handle())A list of process handles, starting with p, each one
is the parent process of the previous one.
Other process handle functions:
ps_children(),
ps_cmdline(),
ps_connections(),
ps_cpu_times(),
ps_create_time(),
ps_cwd(),
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_ppid(),
ps_resume(),
ps_send_signal(),
ps_shared_libs(),
ps_status(),
ps_suspend(),
ps_terminal(),
ps_terminate(),
ps_uids(),
ps_username()
ps_descent()
#> [[1]]
#> <ps::ps_handle> PID=4139632, NAME=R, AT=2025-10-29 18:06:27.39
#>
#> [[2]]
#> <ps::ps_handle> PID=4139250, NAME=R, AT=2025-10-29 18:06:21.28
#>
#> [[3]]
#> <ps::ps_handle> PID=4139249, NAME=build-and-log-b, AT=2025-10-29 18:06:21.26
#>
#> [[4]]
#> <ps::ps_handle> PID=4139248, NAME=bash, AT=2025-10-29 18:06:21.26
#>
#> [[5]]
#> <ps::ps_handle> PID=4107168, NAME=xargs, AT=2025-10-29 17:56:11.31
#>
#> [[6]]
#> <ps::ps_handle> PID=4107026, NAME=bash, AT=2025-10-29 17:56:11.21
#>
#> [[7]]
#> <ps::ps_handle> PID=1724250, NAME=bash, AT=2025-10-27 13:40:23.32
#>
#> [[8]]
#> <ps::ps_handle> PID=1723632, NAME=rsession, AT=2025-10-27 13:39:33.12
#>
#> [[9]]
#> <ps::ps_handle> PID=1723612, NAME=rsession-run, AT=2025-10-27 13:39:33.09
#>
#> [[10]]
#> <ps::ps_handle> PID=1723610, NAME=sh, AT=2025-10-27 13:39:33.06
#>
#> [[11]]
#> <ps::ps_handle> PID=3956, NAME=rstudio-local-l, AT=2025-10-25 02:17:50.25
#>
#> [[12]]
#> <ps::ps_handle> PID=3950, NAME=rstudio-launche, AT=2025-10-25 02:17:50.23
#>
#> [[13]]
#> <ps::ps_handle> PID=1, NAME=systemd, AT=2025-10-25 02:16:10.14
#>