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Safe access to process stat

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This commit is contained in:
Mathieu Comandon 2015-03-05 14:36:43 +01:00
parent 637f8b7c3c
commit d30a80a9e5
1 changed files with 15 additions and 5 deletions
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20
lutris/util/process.py
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@ -21,7 +21,10 @@ class Process(object):
return "Process {}".format(self.pid)
def get_stat(self, parsed=True):
with open("/proc/{}/stat".format(self.pid)) as stat_file:
stat_filename = "/proc/{}/stat".format(self.pid)
if not os.path.exists(stat_filename):
return
with open(stat_filename) as stat_file:
_stat = stat_file.readline()
if parsed:
return _stat[_stat.rfind(")")+1:].split()
@ -54,7 +57,8 @@ class Process(object):
def name(self):
"""Filename of the executable"""
_stat = self.get_stat(parsed=False)
return _stat[_stat.find("(")+1:_stat.rfind(")")]
if _stat:
return _stat[_stat.find("(")+1:_stat.rfind(")")]
@property
def state(self):
@ -63,17 +67,23 @@ class Process(object):
sleep, Z is zombie, T is traced or stopped (on a signal), and W is
paging.
"""
return self.get_stat()[0]
_stat = self.get_stat()
if _stat:
return _stat[0]
@property
def ppid(self):
"""PID of the parent"""
return self.get_stat()[1]
_stat = self.get_stat()
if _stat:
return _stat[1]
@property
def pgrp(self):
"""Process group ID of the process"""
return self.get_stat()[2]
_stat = self.get_stat()
if _stat:
return _stat[2]
@property
def cmdline(self):