PermissionError on macOS

[MichaelMa2014]

Description

After running for a while, glances will crash on a PermissionError. This is different from issue #885 because it does not crash immediately when starting.

Versions

• Glances (glances -V): Glances v2.10
• PSutil (glances -V): psutil v5.2.2
• Operating System (lsb_release -a): macOS Sierra 10.12.5 (16F73)

Logs

Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.5/bin/glances", line 11, in <module>
    sys.exit(main())
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/glances/__init__.py", line 134, in main
    start(config=config, args=args)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/glances/__init__.py", line 103, in start
    mode.serve_forever()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/glances/standalone.py", line 117, in serve_forever
    self.schedule.run()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/sched.py", line 147, in run
    action(*argument, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/glances/standalone.py", line 100, in __serve_forever
    self.stats.update()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/glances/stats.py", line 192, in update
    self._plugins[p].update()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/glances/plugins/glances_processcount.py", line 57, in update
    glances_processes.update()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/glances/processes.py", line 428, in update
    standard_stats=self.max_processes is None)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/glances/processes.py", line 387, in __get_process_stats
    procstat = self.__get_mandatory_stats(proc, procstat)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/glances/processes.py", line 242, in __get_mandatory_stats
    ad_value=''))
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/psutil/__init__.py", line 563, in as_dict
    ret = meth()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/psutil/_common.py", line 318, in wrapper
    ret = cache[fun] = fun(self)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/psutil/__init__.py", line 1097, in cpu_times
    return self._proc.cpu_times()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/psutil/_psosx.py", line 293, in wrapper
    return fun(self, *args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/psutil/_psosx.py", line 416, in cpu_times
    rawtuple = self._get_pidtaskinfo()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/psutil/_common.py", line 318, in wrapper
    ret = cache[fun] = fun(self)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/psutil/_psosx.py", line 331, in _get_pidtaskinfo
    ret = cext.proc_pidtaskinfo_oneshot(self.pid)
PermissionError: [Errno 1] Operation not permitted

[nicolargo]

@giampaolo: what do you think ?

[rozenstein94]

I found a workaround. you need to install brew version of python to have no problems. But at the same time most pip packages are successfully installed under built-in python, and supporting unofficial version isn't right way. Also pip install glances --user works due to reports I found online. At least documentation needs to be updated, but its a workarounds

[giampaolo]

I remember I've seen a similar issue already. I am not sure why it happens but it's a psutil bug, because I would expect psutil.AccessDenied, not PermissionError.

[nicolargo]

@giampaolo Ok waiting for the PSUtil patch. I will add a psutil.AccessDenied catch on my side.

Thanks for the report.

[nicolargo]

Done in the DEVELOP branch.

PS: Need the PsUtil version correcting the issue.

[MichaelMa2014]

Thanks a lot for the quick response. You guys are amazing!