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Number of open file descriptors

Source: R/low-level.R
ps_num_fds.Rd

Note that in some IDEs, e.g. RStudio or R.app on macOS, the IDE itself opens files from other threads, in addition to the files opened from the main R thread.

Usage

ps_num_fds(p = ps_handle())

Arguments

p

Process handle.

Value

Integer scalar.

Details

For a zombie process it throws a zombie_process error.

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_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()

Examples

p <- ps_handle()
ps_num_fds(p)
#> [1] 20
f <- file(tmp <- tempfile(), "w")
ps_num_fds(p)
#> [1] 21
close(f)
unlink(tmp)
ps_num_fds(p)
#> [1] 20