Get main process ID.
Get the process ID (PID) of the most recent main R process to orchestrate the targets of the current project.
tar_pid(store = targets::tar_config_get("store"))store |
Character of length 1, path to the
|
The main process is the R process invoked
by tar_make() or similar. If callr_function is not NULL,
this is an external process, and the pid in the return value
will not agree with Sys.getpid() in your current interactive session.
The process may or may not be alive. You may want to
check it with ps::ps_is_running(ps::ps_handle(targets::tar_pid()))
before running another call to tar_make()
for the same project.
Integer with the process ID (PID) of the most recent main R process to orchestrate the targets of the current project.
Other data:
tar_load_raw(),
tar_load(),
tar_meta(),
tar_objects(),
tar_process(),
tar_read_raw(),
tar_read()
if (identical(Sys.getenv("TAR_EXAMPLES"), "true")) {
tar_dir({ # tar_dir() runs code from a temporary directory.
tar_script({
list(
tar_target(x, seq_len(2)),
tar_target(y, 2 * x, pattern = map(x))
)
}, ask = FALSE)
tar_make()
Sys.getpid()
tar_pid() # Different from the current PID.
})
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.