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## -*- coding: utf-8 -*-
##
## Process lister (control TBA)
##
## Copyright 2007, Red Hat, Inc
## Michael DeHaan <mdehaan@redhat.com>
##
## This software may be freely redistributed under the terms of the GNU
## general public license.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
##
# other modules
import sub_process
import codes
# our modules
from modules import func_module
# =================================
class ProcessModule(func_module.FuncModule):
def __init__(self):
self.methods = {
"info" : self.info,
"kill" : self.kill,
"pkill" : self.pkill,
"mem" : self.mem
}
func_module.FuncModule.__init__(self)
def info(self,flags="-auxh"):
"""
Returns a struct of hardware information. By default, this pulls down
all of the devices. If you don't care about them, set with_devices to
False.
"""
flags.replace(";","") # prevent stupidity
#FIXME: we need to swallow stdout/stderr as well, right now it spews to the console
cmd = sub_process.Popen(["/bin/ps", flags] ,executable="/bin/ps", stdout=sub_process.PIPE,shell=False)
data = cmd.communicate()[0]
results = []
for x in data.split("\n"):
tokens = x.split()
results.append(tokens)
return results
def mem(self):
"""
Returns a list of per-program memory usage.
Private + Shared = RAM used Program
[["39.4 MiB", "10.3 MiB", "49.8 MiB", "Xorg"],
["42.2 MiB", "12.4 MiB", "54.6 MiB", "nautilus"],
["52.3 MiB", "10.8 MiB", "63.0 MiB", "liferea-bin"]
["171.6 MiB", "11.9 MiB", "183.5 MiB", "firefox-bin"]]
Taken from the ps_mem.py script written by Pádraig Brady.
http://www.pixelbeat.org/scripts/ps_mem.py
"""
import os
our_pid=os.getpid()
results = []
have_smaps=0
have_pss=0
def kernel_ver():
""" (major,minor,release) """
kv=open("/proc/sys/kernel/osrelease").readline().split(".")[:3]
for char in "-_":
kv[2]=kv[2].split(char)[0]
return (int(kv[0]), int(kv[1]), int(kv[2]))
kv=kernel_ver()
def getMemStats(pid):
""" return Rss,Pss,Shared (note Private = Rss-Shared) """
Shared_lines=[]
Pss_lines=[]
pagesize=os.sysconf("SC_PAGE_SIZE")/1024 #KiB
Rss=int(open("/proc/"+str(pid)+"/statm").readline().split()[1])*pagesize
if os.path.exists("/proc/"+str(pid)+"/smaps"): #stat
global have_smaps
have_smaps=1
for line in open("/proc/"+str(pid)+"/smaps").readlines(): #open
#Note in smaps Shared+Private = Rss above
#The Rss in smaps includes video card mem etc.
if line.startswith("Shared"):
Shared_lines.append(line)
elif line.startswith("Pss"):
global have_pss
have_pss=1
Pss_lines.append(line)
Shared=sum([int(line.split()[1]) for line in Shared_lines])
Pss=sum([int(line.split()[1]) for line in Pss_lines])
elif (2,6,1) <= kv <= (2,6,9):
Pss=0
Shared=0 #lots of overestimation, but what can we do?
else:
Pss=0
Shared=int(open("/proc/"+str(pid)+"/statm").readline().split()[2])*pagesize
return (Rss, Pss, Shared)
cmds={}
shareds={}
count={}
for pid in os.listdir("/proc/"):
try:
pid = int(pid) #note Thread IDs not listed in /proc/
if pid ==our_pid: continue
except:
continue
cmd = file("/proc/%d/status" % pid).readline()[6:-1]
try:
exe = os.path.basename(os.path.realpath("/proc/%d/exe" % pid))
if exe.startswith(cmd):
cmd=exe #show non truncated version
#Note because we show the non truncated name
#one can have separated programs as follows:
#584.0 KiB + 1.0 MiB = 1.6 MiB mozilla-thunder (exe -> bash)
#56.0 MiB + 22.2 MiB = 78.2 MiB mozilla-thunderbird-bin
except:
#permission denied or
#kernel threads don't have exe links or
#process gone
continue
try:
rss, pss, shared = getMemStats(pid)
private = rss-shared
#Note shared is always a subset of rss (trs is not always)
except:
continue #process gone
if shareds.get(cmd):
if pss: #add shared portion of PSS together
shareds[cmd]+=pss-private
elif shareds[cmd] < shared: #just take largest shared val
shareds[cmd]=shared
else:
if pss:
shareds[cmd]=pss-private
else:
shareds[cmd]=shared
cmds[cmd]=cmds.setdefault(cmd,0)+private
if count.has_key(cmd):
count[cmd] += 1
else:
count[cmd] = 1
#Add max shared mem for each program
total=0
for cmd in cmds.keys():
cmds[cmd]=cmds[cmd]+shareds[cmd]
total+=cmds[cmd] #valid if PSS available
sort_list = cmds.items()
sort_list.sort(lambda x,y:cmp(x[1],y[1]))
sort_list=filter(lambda x:x[1],sort_list) #get rid of zero sized processes
#The following matches "du -h" output
def human(num, power="Ki"):
powers=["Ki","Mi","Gi","Ti"]
while num >= 1000: #4 digits
num /= 1024.0
power=powers[powers.index(power)+1]
return "%.1f %s" % (num,power)
def cmd_with_count(cmd, count):
if count>1:
return "%s (%u)" % (cmd, count)
else:
return cmd
for cmd in sort_list:
results.append([
"%sB" % human(cmd[1]-shareds[cmd[0]]),
"%sB" % human(shareds[cmd[0]]),
"%sB" % human(cmd[1]),
"%s" % cmd_with_count(cmd[0], count[cmd[0]])
])
if have_pss:
results.append(["", "", "", "%sB" % human(total)])
return results
def kill(self,pid,signal="TERM"):
if pid == "0":
raise codes.FuncException("Killing pid group 0 not permitted")
if signal == "":
# this is default /bin/kill behaviour, it claims, but enfore it anyway
signal = "-TERM"
if signal[0] != "-":
signal = "-%s" % signal
rc = sub_process.call(["/bin/kill",signal, pid], executable="/bin/kill", shell=False)
print rc
return rc
def pkill(self,name,level=""):
# example killall("thunderbird","-9")
rc = sub_process.call(["/usr/bin/pkill", name, level], executable="/usr/bin/pkill", shell=False)
return rc
methods = ProcessModule()
register_rpc = methods.register_rpc
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