Process.name() cache may be outdated

[PierreF]

psutil cache the process name based on (pid, creation_time), but in case of exec it could change.

I can reproduce this issue with:

• start bash in one terminal. Use "echo $$" to find PID of this shell (e.g. 1626)
• Run a psutil.process_iter() loop => process.name() return "bash" when I'm on pid == 1626
• run "exec sh" on the bash terminal
• Re-run the same psutil.process_iter() loop, process.name() is still "bash"

The loop used is :

for p in psutil.process_iter():
    if p.pid == 1626:
        print(p.name(), p.cmdline())

Note: the cmdline() - which is not cached - show the new name.

A way to request name without using cache may be valuable.

[adrianreber]

I have the same problem with checkpointing and restarting processes. During restart the process name is the name of the checkpoint/restart tool (CRIU) and once the process has been restored it changes to the program being restarted. So sometimes I get 'criu' as process name and sometimes the actual process name after the restore. It depends on the point in time at which the loop over psutil.process_iter() is run.

[giampaolo]

This is now fixed in latest GIT version.