Is there a way to change effective process name in Python?
Can I change effective process name of a Python script? I want to show a different name instead of the real name of the process when I get the system process list. In CI can set
strcpy(argv[0],"othername");
But in Python
argv[0] = "othername"
doesn't seem to work. When i get process list (with ps ax in my linux box) the real name doesn't change. I prefer a portable solution (or else one solution for posix and another for windows environments), if it exists.
Thanks in advance
Simply put, there's no portable way. You'll have to test for the system and use the preferred method for that system.
Further, I'm confused about what you mean by process names on Windows.
Do you mean a service name? I presume so, because nothing else really makes any sense (at least to my non-Windows using brain).
If so, you need to use Tim Golden's WMI interface and call the .Change method on the service... at least according to his tutorial.
For Linux none of the methods I found worked except for this poorly packaged module that sets argv[0] for you.
I don't even know if this will work on BSD variants (which does have a setproctitle system call). I'm pretty sure argv[0] won't work on Solaris.
I've recently written a Python module to change the process title in a portable way: check https://github.com/dvarrazzo/py-setproctitle
It is a wrapper around the code used by PostgreSQL to perform the title change. It is currently tested against Linux and Mac OS X: Windows (with limited functionality) and BSD portings are on the way.
Edit: as of July 2010, the module works with BSD and with limited functionality on Windows, and has been ported to Python 3.x.
actually you need 2 things on linux: modify argv[0] from C (for ps auxf and friends) and call prctl with PR_SET_NAME flag.
There is absolutely no way to do first piece from python itself. Although, you can just change process name by calling prctl.
def set_proc_name(newname):
from ctypes import cdll, byref, create_string_buffer
libc = cdll.LoadLibrary('libc.so.6')
buff = create_string_buffer(len(newname)+1)
buff.value = newname
libc.prctl(15, byref(buff), 0, 0, 0)
def get_proc_name():
from ctypes import cdll, byref, create_string_buffer
libc = cdll.LoadLibrary('libc.so.6')
buff = create_string_buffer(128)
# 16 == PR_GET_NAME from <linux/prctl.h>
libc.prctl(16, byref(buff), 0, 0, 0)
return buff.value
import sys
# sys.argv[0] == 'python'
# outputs 'python'
get_proc_name()
set_proc_name('testing yeah')
# outputs 'testing yeah'
get_proc_name()
ps auxf will show just 'python' after that :(. But top and ps -A will show new 'testing yeah' process name :). Also killall and pkill will work with new name.
btw, procname from googlecode also changes argv[0] , thus, even, changes ps auxf output.
UPDATE : The solution posted in this answer does not play nice sometimes on FreeBSD. I'm now using py-setproctitle stated in this answer for a year or so on various linux and freebsd boxes. No fails so far! Everybody should too! :). It uses almost the same code as PostgreSQL uses in its main database and child processes.
链接地址: http://www.djcxy.com/p/46402.html