1715 lines
62 KiB
Python
1715 lines
62 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Tests for psutil.Process class."""
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import collections
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import errno
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import getpass
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import itertools
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import os
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import signal
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import socket
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import stat
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import subprocess
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import sys
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import textwrap
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import time
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import types
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import unittest
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import psutil
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from psutil import AIX
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from psutil import BSD
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from psutil import LINUX
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from psutil import MACOS
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from psutil import NETBSD
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from psutil import OPENBSD
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from psutil import OSX
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from psutil import POSIX
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from psutil import SUNOS
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from psutil import WINDOWS
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from psutil._common import open_text
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from psutil._compat import PY3
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from psutil._compat import FileNotFoundError
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from psutil._compat import long
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from psutil._compat import redirect_stderr
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from psutil._compat import super
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from psutil.tests import APPVEYOR
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from psutil.tests import CI_TESTING
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from psutil.tests import GITHUB_ACTIONS
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from psutil.tests import GLOBAL_TIMEOUT
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from psutil.tests import HAS_CPU_AFFINITY
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from psutil.tests import HAS_ENVIRON
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from psutil.tests import HAS_IONICE
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from psutil.tests import HAS_MEMORY_MAPS
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from psutil.tests import HAS_PROC_CPU_NUM
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from psutil.tests import HAS_PROC_IO_COUNTERS
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from psutil.tests import HAS_RLIMIT
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from psutil.tests import HAS_THREADS
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from psutil.tests import MACOS_11PLUS
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from psutil.tests import PYPY
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from psutil.tests import PYTHON_EXE
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from psutil.tests import PYTHON_EXE_ENV
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from psutil.tests import QEMU_USER
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from psutil.tests import PsutilTestCase
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from psutil.tests import ThreadTask
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from psutil.tests import call_until
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from psutil.tests import copyload_shared_lib
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from psutil.tests import create_c_exe
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from psutil.tests import create_py_exe
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from psutil.tests import mock
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from psutil.tests import process_namespace
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from psutil.tests import reap_children
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from psutil.tests import retry_on_failure
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from psutil.tests import sh
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from psutil.tests import skip_on_access_denied
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from psutil.tests import skip_on_not_implemented
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from psutil.tests import wait_for_pid
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# ===================================================================
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# --- psutil.Process class tests
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# ===================================================================
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class TestProcess(PsutilTestCase):
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"""Tests for psutil.Process class."""
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def spawn_psproc(self, *args, **kwargs):
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sproc = self.spawn_testproc(*args, **kwargs)
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try:
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return psutil.Process(sproc.pid)
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except psutil.NoSuchProcess:
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self.assertPidGone(sproc.pid)
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raise
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# ---
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def test_pid(self):
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p = psutil.Process()
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self.assertEqual(p.pid, os.getpid())
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with self.assertRaises(AttributeError):
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p.pid = 33
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def test_kill(self):
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p = self.spawn_psproc()
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p.kill()
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code = p.wait()
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if WINDOWS:
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self.assertEqual(code, signal.SIGTERM)
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else:
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self.assertEqual(code, -signal.SIGKILL)
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self.assertProcessGone(p)
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def test_terminate(self):
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p = self.spawn_psproc()
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p.terminate()
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code = p.wait()
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if WINDOWS:
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self.assertEqual(code, signal.SIGTERM)
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else:
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self.assertEqual(code, -signal.SIGTERM)
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self.assertProcessGone(p)
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def test_send_signal(self):
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sig = signal.SIGKILL if POSIX else signal.SIGTERM
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p = self.spawn_psproc()
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p.send_signal(sig)
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code = p.wait()
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if WINDOWS:
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self.assertEqual(code, sig)
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else:
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self.assertEqual(code, -sig)
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self.assertProcessGone(p)
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@unittest.skipIf(not POSIX, "not POSIX")
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def test_send_signal_mocked(self):
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sig = signal.SIGTERM
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p = self.spawn_psproc()
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with mock.patch(
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'psutil.os.kill', side_effect=OSError(errno.ESRCH, "")
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):
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self.assertRaises(psutil.NoSuchProcess, p.send_signal, sig)
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p = self.spawn_psproc()
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with mock.patch(
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'psutil.os.kill', side_effect=OSError(errno.EPERM, "")
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):
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self.assertRaises(psutil.AccessDenied, p.send_signal, sig)
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def test_wait_exited(self):
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# Test waitpid() + WIFEXITED -> WEXITSTATUS.
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# normal return, same as exit(0)
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cmd = [PYTHON_EXE, "-c", "pass"]
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p = self.spawn_psproc(cmd)
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code = p.wait()
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self.assertEqual(code, 0)
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self.assertProcessGone(p)
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# exit(1), implicit in case of error
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cmd = [PYTHON_EXE, "-c", "1 / 0"]
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p = self.spawn_psproc(cmd, stderr=subprocess.PIPE)
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code = p.wait()
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self.assertEqual(code, 1)
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self.assertProcessGone(p)
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# via sys.exit()
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cmd = [PYTHON_EXE, "-c", "import sys; sys.exit(5);"]
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p = self.spawn_psproc(cmd)
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code = p.wait()
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self.assertEqual(code, 5)
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self.assertProcessGone(p)
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# via os._exit()
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cmd = [PYTHON_EXE, "-c", "import os; os._exit(5);"]
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p = self.spawn_psproc(cmd)
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code = p.wait()
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self.assertEqual(code, 5)
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self.assertProcessGone(p)
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@unittest.skipIf(NETBSD, "fails on NETBSD")
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def test_wait_stopped(self):
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p = self.spawn_psproc()
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if POSIX:
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# Test waitpid() + WIFSTOPPED and WIFCONTINUED.
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# Note: if a process is stopped it ignores SIGTERM.
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p.send_signal(signal.SIGSTOP)
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self.assertRaises(psutil.TimeoutExpired, p.wait, timeout=0.001)
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p.send_signal(signal.SIGCONT)
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self.assertRaises(psutil.TimeoutExpired, p.wait, timeout=0.001)
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p.send_signal(signal.SIGTERM)
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self.assertEqual(p.wait(), -signal.SIGTERM)
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self.assertEqual(p.wait(), -signal.SIGTERM)
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else:
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p.suspend()
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self.assertRaises(psutil.TimeoutExpired, p.wait, timeout=0.001)
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p.resume()
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self.assertRaises(psutil.TimeoutExpired, p.wait, timeout=0.001)
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p.terminate()
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self.assertEqual(p.wait(), signal.SIGTERM)
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self.assertEqual(p.wait(), signal.SIGTERM)
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def test_wait_non_children(self):
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# Test wait() against a process which is not our direct
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# child.
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child, grandchild = self.spawn_children_pair()
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self.assertRaises(psutil.TimeoutExpired, child.wait, 0.01)
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self.assertRaises(psutil.TimeoutExpired, grandchild.wait, 0.01)
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# We also terminate the direct child otherwise the
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# grandchild will hang until the parent is gone.
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child.terminate()
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grandchild.terminate()
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child_ret = child.wait()
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grandchild_ret = grandchild.wait()
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if POSIX:
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self.assertEqual(child_ret, -signal.SIGTERM)
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# For processes which are not our children we're supposed
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# to get None.
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self.assertEqual(grandchild_ret, None)
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else:
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self.assertEqual(child_ret, signal.SIGTERM)
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self.assertEqual(child_ret, signal.SIGTERM)
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def test_wait_timeout(self):
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p = self.spawn_psproc()
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p.name()
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self.assertRaises(psutil.TimeoutExpired, p.wait, 0.01)
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self.assertRaises(psutil.TimeoutExpired, p.wait, 0)
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self.assertRaises(ValueError, p.wait, -1)
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def test_wait_timeout_nonblocking(self):
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p = self.spawn_psproc()
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self.assertRaises(psutil.TimeoutExpired, p.wait, 0)
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p.kill()
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stop_at = time.time() + GLOBAL_TIMEOUT
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while time.time() < stop_at:
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try:
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code = p.wait(0)
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break
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except psutil.TimeoutExpired:
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pass
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else:
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raise self.fail('timeout')
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if POSIX:
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self.assertEqual(code, -signal.SIGKILL)
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else:
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self.assertEqual(code, signal.SIGTERM)
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self.assertProcessGone(p)
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def test_cpu_percent(self):
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p = psutil.Process()
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p.cpu_percent(interval=0.001)
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p.cpu_percent(interval=0.001)
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for _ in range(100):
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percent = p.cpu_percent(interval=None)
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self.assertIsInstance(percent, float)
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self.assertGreaterEqual(percent, 0.0)
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with self.assertRaises(ValueError):
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p.cpu_percent(interval=-1)
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def test_cpu_percent_numcpus_none(self):
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# See: https://github.com/giampaolo/psutil/issues/1087
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with mock.patch('psutil.cpu_count', return_value=None) as m:
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psutil.Process().cpu_percent()
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assert m.called
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@unittest.skipIf(QEMU_USER, "QEMU user not supported")
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def test_cpu_times(self):
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times = psutil.Process().cpu_times()
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assert times.user >= 0.0, times
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assert times.system >= 0.0, times
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assert times.children_user >= 0.0, times
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assert times.children_system >= 0.0, times
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if LINUX:
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assert times.iowait >= 0.0, times
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# make sure returned values can be pretty printed with strftime
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for name in times._fields:
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time.strftime("%H:%M:%S", time.localtime(getattr(times, name)))
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@unittest.skipIf(QEMU_USER, "QEMU user not supported")
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def test_cpu_times_2(self):
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user_time, kernel_time = psutil.Process().cpu_times()[:2]
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utime, ktime = os.times()[:2]
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# Use os.times()[:2] as base values to compare our results
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# using a tolerance of +/- 0.1 seconds.
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# It will fail if the difference between the values is > 0.1s.
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if (max([user_time, utime]) - min([user_time, utime])) > 0.1:
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raise self.fail("expected: %s, found: %s" % (utime, user_time))
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if (max([kernel_time, ktime]) - min([kernel_time, ktime])) > 0.1:
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raise self.fail("expected: %s, found: %s" % (ktime, kernel_time))
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@unittest.skipIf(not HAS_PROC_CPU_NUM, "not supported")
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def test_cpu_num(self):
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p = psutil.Process()
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num = p.cpu_num()
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self.assertGreaterEqual(num, 0)
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if psutil.cpu_count() == 1:
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self.assertEqual(num, 0)
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self.assertIn(p.cpu_num(), range(psutil.cpu_count()))
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def test_create_time(self):
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p = self.spawn_psproc()
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now = time.time()
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create_time = p.create_time()
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# Use time.time() as base value to compare our result using a
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# tolerance of +/- 1 second.
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# It will fail if the difference between the values is > 2s.
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difference = abs(create_time - now)
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if difference > 2:
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raise self.fail(
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"expected: %s, found: %s, difference: %s"
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% (now, create_time, difference)
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)
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# make sure returned value can be pretty printed with strftime
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time.strftime("%Y %m %d %H:%M:%S", time.localtime(p.create_time()))
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@unittest.skipIf(not POSIX, 'POSIX only')
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def test_terminal(self):
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terminal = psutil.Process().terminal()
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if terminal is not None:
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tty = os.path.realpath(sh('tty'))
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self.assertEqual(terminal, tty)
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@unittest.skipIf(not HAS_PROC_IO_COUNTERS, 'not supported')
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@skip_on_not_implemented(only_if=LINUX)
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def test_io_counters(self):
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p = psutil.Process()
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# test reads
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io1 = p.io_counters()
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with open(PYTHON_EXE, 'rb') as f:
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f.read()
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io2 = p.io_counters()
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if not BSD and not AIX:
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self.assertGreater(io2.read_count, io1.read_count)
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self.assertEqual(io2.write_count, io1.write_count)
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if LINUX:
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self.assertGreater(io2.read_chars, io1.read_chars)
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self.assertEqual(io2.write_chars, io1.write_chars)
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else:
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self.assertGreaterEqual(io2.read_bytes, io1.read_bytes)
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self.assertGreaterEqual(io2.write_bytes, io1.write_bytes)
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# test writes
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io1 = p.io_counters()
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with open(self.get_testfn(), 'wb') as f:
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if PY3:
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f.write(bytes("x" * 1000000, 'ascii'))
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else:
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f.write("x" * 1000000)
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io2 = p.io_counters()
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self.assertGreaterEqual(io2.write_count, io1.write_count)
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self.assertGreaterEqual(io2.write_bytes, io1.write_bytes)
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self.assertGreaterEqual(io2.read_count, io1.read_count)
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self.assertGreaterEqual(io2.read_bytes, io1.read_bytes)
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if LINUX:
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self.assertGreater(io2.write_chars, io1.write_chars)
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self.assertGreaterEqual(io2.read_chars, io1.read_chars)
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# sanity check
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for i in range(len(io2)):
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if BSD and i >= 2:
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# On BSD read_bytes and write_bytes are always set to -1.
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continue
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self.assertGreaterEqual(io2[i], 0)
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self.assertGreaterEqual(io2[i], 0)
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@unittest.skipIf(not HAS_IONICE, "not supported")
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@unittest.skipIf(not LINUX, "linux only")
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def test_ionice_linux(self):
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def cleanup(init):
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ioclass, value = init
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if ioclass == psutil.IOPRIO_CLASS_NONE:
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value = 0
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p.ionice(ioclass, value)
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p = psutil.Process()
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if not CI_TESTING:
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self.assertEqual(p.ionice()[0], psutil.IOPRIO_CLASS_NONE)
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self.assertEqual(psutil.IOPRIO_CLASS_NONE, 0)
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self.assertEqual(psutil.IOPRIO_CLASS_RT, 1) # high
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self.assertEqual(psutil.IOPRIO_CLASS_BE, 2) # normal
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self.assertEqual(psutil.IOPRIO_CLASS_IDLE, 3) # low
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init = p.ionice()
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self.addCleanup(cleanup, init)
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# low
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p.ionice(psutil.IOPRIO_CLASS_IDLE)
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self.assertEqual(tuple(p.ionice()), (psutil.IOPRIO_CLASS_IDLE, 0))
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with self.assertRaises(ValueError): # accepts no value
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p.ionice(psutil.IOPRIO_CLASS_IDLE, value=7)
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# normal
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p.ionice(psutil.IOPRIO_CLASS_BE)
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self.assertEqual(tuple(p.ionice()), (psutil.IOPRIO_CLASS_BE, 0))
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p.ionice(psutil.IOPRIO_CLASS_BE, value=7)
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self.assertEqual(tuple(p.ionice()), (psutil.IOPRIO_CLASS_BE, 7))
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with self.assertRaises(ValueError):
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p.ionice(psutil.IOPRIO_CLASS_BE, value=8)
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try:
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p.ionice(psutil.IOPRIO_CLASS_RT, value=7)
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except psutil.AccessDenied:
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pass
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# errs
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with self.assertRaisesRegex(ValueError, "ioclass accepts no value"):
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p.ionice(psutil.IOPRIO_CLASS_NONE, 1)
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with self.assertRaisesRegex(ValueError, "ioclass accepts no value"):
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p.ionice(psutil.IOPRIO_CLASS_IDLE, 1)
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with self.assertRaisesRegex(
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ValueError, "'ioclass' argument must be specified"
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):
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p.ionice(value=1)
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@unittest.skipIf(not HAS_IONICE, "not supported")
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@unittest.skipIf(not WINDOWS, 'not supported on this win version')
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def test_ionice_win(self):
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p = psutil.Process()
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if not CI_TESTING:
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self.assertEqual(p.ionice(), psutil.IOPRIO_NORMAL)
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init = p.ionice()
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self.addCleanup(p.ionice, init)
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# base
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p.ionice(psutil.IOPRIO_VERYLOW)
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self.assertEqual(p.ionice(), psutil.IOPRIO_VERYLOW)
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p.ionice(psutil.IOPRIO_LOW)
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self.assertEqual(p.ionice(), psutil.IOPRIO_LOW)
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try:
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p.ionice(psutil.IOPRIO_HIGH)
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except psutil.AccessDenied:
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pass
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else:
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self.assertEqual(p.ionice(), psutil.IOPRIO_HIGH)
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# errs
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with self.assertRaisesRegex(
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TypeError, "value argument not accepted on Windows"
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):
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p.ionice(psutil.IOPRIO_NORMAL, value=1)
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with self.assertRaisesRegex(ValueError, "is not a valid priority"):
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p.ionice(psutil.IOPRIO_HIGH + 1)
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@unittest.skipIf(not HAS_RLIMIT, "not supported")
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def test_rlimit_get(self):
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import resource
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p = psutil.Process(os.getpid())
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names = [x for x in dir(psutil) if x.startswith('RLIMIT')]
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assert names, names
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for name in names:
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value = getattr(psutil, name)
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self.assertGreaterEqual(value, 0)
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if name in dir(resource):
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self.assertEqual(value, getattr(resource, name))
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# XXX - On PyPy RLIMIT_INFINITY returned by
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# resource.getrlimit() is reported as a very big long
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# number instead of -1. It looks like a bug with PyPy.
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if PYPY:
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continue
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self.assertEqual(p.rlimit(value), resource.getrlimit(value))
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else:
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ret = p.rlimit(value)
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self.assertEqual(len(ret), 2)
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self.assertGreaterEqual(ret[0], -1)
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self.assertGreaterEqual(ret[1], -1)
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@unittest.skipIf(not HAS_RLIMIT, "not supported")
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def test_rlimit_set(self):
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p = self.spawn_psproc()
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p.rlimit(psutil.RLIMIT_NOFILE, (5, 5))
|
|
self.assertEqual(p.rlimit(psutil.RLIMIT_NOFILE), (5, 5))
|
|
# If pid is 0 prlimit() applies to the calling process and
|
|
# we don't want that.
|
|
if LINUX:
|
|
with self.assertRaisesRegex(ValueError, "can't use prlimit"):
|
|
psutil._psplatform.Process(0).rlimit(0)
|
|
with self.assertRaises(ValueError):
|
|
p.rlimit(psutil.RLIMIT_NOFILE, (5, 5, 5))
|
|
|
|
@unittest.skipIf(not HAS_RLIMIT, "not supported")
|
|
def test_rlimit(self):
|
|
p = psutil.Process()
|
|
testfn = self.get_testfn()
|
|
soft, hard = p.rlimit(psutil.RLIMIT_FSIZE)
|
|
try:
|
|
p.rlimit(psutil.RLIMIT_FSIZE, (1024, hard))
|
|
with open(testfn, "wb") as f:
|
|
f.write(b"X" * 1024)
|
|
# write() or flush() doesn't always cause the exception
|
|
# but close() will.
|
|
with self.assertRaises(IOError) as exc:
|
|
with open(testfn, "wb") as f:
|
|
f.write(b"X" * 1025)
|
|
self.assertEqual(
|
|
exc.exception.errno if PY3 else exc.exception[0], errno.EFBIG
|
|
)
|
|
finally:
|
|
p.rlimit(psutil.RLIMIT_FSIZE, (soft, hard))
|
|
self.assertEqual(p.rlimit(psutil.RLIMIT_FSIZE), (soft, hard))
|
|
|
|
@unittest.skipIf(not HAS_RLIMIT, "not supported")
|
|
def test_rlimit_infinity(self):
|
|
# First set a limit, then re-set it by specifying INFINITY
|
|
# and assume we overridden the previous limit.
|
|
p = psutil.Process()
|
|
soft, hard = p.rlimit(psutil.RLIMIT_FSIZE)
|
|
try:
|
|
p.rlimit(psutil.RLIMIT_FSIZE, (1024, hard))
|
|
p.rlimit(psutil.RLIMIT_FSIZE, (psutil.RLIM_INFINITY, hard))
|
|
with open(self.get_testfn(), "wb") as f:
|
|
f.write(b"X" * 2048)
|
|
finally:
|
|
p.rlimit(psutil.RLIMIT_FSIZE, (soft, hard))
|
|
self.assertEqual(p.rlimit(psutil.RLIMIT_FSIZE), (soft, hard))
|
|
|
|
@unittest.skipIf(not HAS_RLIMIT, "not supported")
|
|
def test_rlimit_infinity_value(self):
|
|
# RLIMIT_FSIZE should be RLIM_INFINITY, which will be a really
|
|
# big number on a platform with large file support. On these
|
|
# platforms we need to test that the get/setrlimit functions
|
|
# properly convert the number to a C long long and that the
|
|
# conversion doesn't raise an error.
|
|
p = psutil.Process()
|
|
soft, hard = p.rlimit(psutil.RLIMIT_FSIZE)
|
|
self.assertEqual(psutil.RLIM_INFINITY, hard)
|
|
p.rlimit(psutil.RLIMIT_FSIZE, (soft, hard))
|
|
|
|
def test_num_threads(self):
|
|
# on certain platforms such as Linux we might test for exact
|
|
# thread number, since we always have with 1 thread per process,
|
|
# but this does not apply across all platforms (MACOS, Windows)
|
|
p = psutil.Process()
|
|
if OPENBSD:
|
|
try:
|
|
step1 = p.num_threads()
|
|
except psutil.AccessDenied:
|
|
raise unittest.SkipTest("on OpenBSD this requires root access")
|
|
else:
|
|
step1 = p.num_threads()
|
|
|
|
with ThreadTask():
|
|
step2 = p.num_threads()
|
|
self.assertEqual(step2, step1 + 1)
|
|
|
|
@unittest.skipIf(not WINDOWS, 'WINDOWS only')
|
|
def test_num_handles(self):
|
|
# a better test is done later into test/_windows.py
|
|
p = psutil.Process()
|
|
self.assertGreater(p.num_handles(), 0)
|
|
|
|
@unittest.skipIf(not HAS_THREADS, 'not supported')
|
|
def test_threads(self):
|
|
p = psutil.Process()
|
|
if OPENBSD:
|
|
try:
|
|
step1 = p.threads()
|
|
except psutil.AccessDenied:
|
|
raise unittest.SkipTest("on OpenBSD this requires root access")
|
|
else:
|
|
step1 = p.threads()
|
|
|
|
with ThreadTask():
|
|
step2 = p.threads()
|
|
self.assertEqual(len(step2), len(step1) + 1)
|
|
athread = step2[0]
|
|
# test named tuple
|
|
self.assertEqual(athread.id, athread[0])
|
|
self.assertEqual(athread.user_time, athread[1])
|
|
self.assertEqual(athread.system_time, athread[2])
|
|
|
|
@retry_on_failure()
|
|
@skip_on_access_denied(only_if=MACOS)
|
|
@unittest.skipIf(not HAS_THREADS, 'not supported')
|
|
def test_threads_2(self):
|
|
p = self.spawn_psproc()
|
|
if OPENBSD:
|
|
try:
|
|
p.threads()
|
|
except psutil.AccessDenied:
|
|
raise unittest.SkipTest("on OpenBSD this requires root access")
|
|
self.assertAlmostEqual(
|
|
p.cpu_times().user,
|
|
sum([x.user_time for x in p.threads()]),
|
|
delta=0.1,
|
|
)
|
|
self.assertAlmostEqual(
|
|
p.cpu_times().system,
|
|
sum([x.system_time for x in p.threads()]),
|
|
delta=0.1,
|
|
)
|
|
|
|
@retry_on_failure()
|
|
def test_memory_info(self):
|
|
p = psutil.Process()
|
|
|
|
# step 1 - get a base value to compare our results
|
|
rss1, vms1 = p.memory_info()[:2]
|
|
percent1 = p.memory_percent()
|
|
self.assertGreater(rss1, 0)
|
|
self.assertGreater(vms1, 0)
|
|
|
|
# step 2 - allocate some memory
|
|
memarr = [None] * 1500000
|
|
|
|
rss2, vms2 = p.memory_info()[:2]
|
|
percent2 = p.memory_percent()
|
|
|
|
# step 3 - make sure that the memory usage bumped up
|
|
self.assertGreater(rss2, rss1)
|
|
self.assertGreaterEqual(vms2, vms1) # vms might be equal
|
|
self.assertGreater(percent2, percent1)
|
|
del memarr
|
|
|
|
if WINDOWS:
|
|
mem = p.memory_info()
|
|
self.assertEqual(mem.rss, mem.wset)
|
|
self.assertEqual(mem.vms, mem.pagefile)
|
|
|
|
mem = p.memory_info()
|
|
for name in mem._fields:
|
|
self.assertGreaterEqual(getattr(mem, name), 0)
|
|
|
|
def test_memory_full_info(self):
|
|
p = psutil.Process()
|
|
total = psutil.virtual_memory().total
|
|
mem = p.memory_full_info()
|
|
for name in mem._fields:
|
|
value = getattr(mem, name)
|
|
self.assertGreaterEqual(value, 0, msg=(name, value))
|
|
if name == 'vms' and OSX or LINUX:
|
|
continue
|
|
self.assertLessEqual(value, total, msg=(name, value, total))
|
|
if LINUX or WINDOWS or MACOS:
|
|
self.assertGreaterEqual(mem.uss, 0)
|
|
if LINUX:
|
|
self.assertGreaterEqual(mem.pss, 0)
|
|
self.assertGreaterEqual(mem.swap, 0)
|
|
|
|
@unittest.skipIf(not HAS_MEMORY_MAPS, "not supported")
|
|
def test_memory_maps(self):
|
|
p = psutil.Process()
|
|
maps = p.memory_maps()
|
|
self.assertEqual(len(maps), len(set(maps)))
|
|
ext_maps = p.memory_maps(grouped=False)
|
|
|
|
for nt in maps:
|
|
if not nt.path.startswith('['):
|
|
if QEMU_USER and "/bin/qemu-" in nt.path:
|
|
continue
|
|
assert os.path.isabs(nt.path), nt.path
|
|
if POSIX:
|
|
try:
|
|
assert os.path.exists(nt.path) or os.path.islink(
|
|
nt.path
|
|
), nt.path
|
|
except AssertionError:
|
|
if not LINUX:
|
|
raise
|
|
else:
|
|
# https://github.com/giampaolo/psutil/issues/759
|
|
with open_text('/proc/self/smaps') as f:
|
|
data = f.read()
|
|
if "%s (deleted)" % nt.path not in data:
|
|
raise
|
|
else:
|
|
# XXX - On Windows we have this strange behavior with
|
|
# 64 bit dlls: they are visible via explorer but cannot
|
|
# be accessed via os.stat() (wtf?).
|
|
if '64' not in os.path.basename(nt.path):
|
|
try:
|
|
st = os.stat(nt.path)
|
|
except FileNotFoundError:
|
|
pass
|
|
else:
|
|
assert stat.S_ISREG(st.st_mode), nt.path
|
|
for nt in ext_maps:
|
|
for fname in nt._fields:
|
|
value = getattr(nt, fname)
|
|
if fname == 'path':
|
|
continue
|
|
if fname in ('addr', 'perms'):
|
|
assert value, value
|
|
else:
|
|
self.assertIsInstance(value, (int, long))
|
|
assert value >= 0, value
|
|
|
|
@unittest.skipIf(not HAS_MEMORY_MAPS, "not supported")
|
|
def test_memory_maps_lists_lib(self):
|
|
# Make sure a newly loaded shared lib is listed.
|
|
p = psutil.Process()
|
|
with copyload_shared_lib() as path:
|
|
|
|
def normpath(p):
|
|
return os.path.realpath(os.path.normcase(p))
|
|
|
|
libpaths = [normpath(x.path) for x in p.memory_maps()]
|
|
self.assertIn(normpath(path), libpaths)
|
|
|
|
def test_memory_percent(self):
|
|
p = psutil.Process()
|
|
p.memory_percent()
|
|
self.assertRaises(ValueError, p.memory_percent, memtype="?!?")
|
|
if LINUX or MACOS or WINDOWS:
|
|
p.memory_percent(memtype='uss')
|
|
|
|
def test_is_running(self):
|
|
p = self.spawn_psproc()
|
|
assert p.is_running()
|
|
assert p.is_running()
|
|
p.kill()
|
|
p.wait()
|
|
assert not p.is_running()
|
|
assert not p.is_running()
|
|
|
|
@unittest.skipIf(QEMU_USER, "QEMU user not supported")
|
|
def test_exe(self):
|
|
p = self.spawn_psproc()
|
|
exe = p.exe()
|
|
try:
|
|
self.assertEqual(exe, PYTHON_EXE)
|
|
except AssertionError:
|
|
if WINDOWS and len(exe) == len(PYTHON_EXE):
|
|
# on Windows we don't care about case sensitivity
|
|
normcase = os.path.normcase
|
|
self.assertEqual(normcase(exe), normcase(PYTHON_EXE))
|
|
else:
|
|
# certain platforms such as BSD are more accurate returning:
|
|
# "/usr/local/bin/python2.7"
|
|
# ...instead of:
|
|
# "/usr/local/bin/python"
|
|
# We do not want to consider this difference in accuracy
|
|
# an error.
|
|
ver = "%s.%s" % (sys.version_info[0], sys.version_info[1])
|
|
try:
|
|
self.assertEqual(
|
|
exe.replace(ver, ''), PYTHON_EXE.replace(ver, '')
|
|
)
|
|
except AssertionError:
|
|
# Typically MACOS. Really not sure what to do here.
|
|
pass
|
|
|
|
out = sh([exe, "-c", "import os; print('hey')"])
|
|
self.assertEqual(out, 'hey')
|
|
|
|
def test_cmdline(self):
|
|
cmdline = [
|
|
PYTHON_EXE,
|
|
"-c",
|
|
"import time; [time.sleep(0.1) for x in range(100)]",
|
|
]
|
|
p = self.spawn_psproc(cmdline)
|
|
|
|
if NETBSD and p.cmdline() == []:
|
|
# https://github.com/giampaolo/psutil/issues/2250
|
|
raise unittest.SkipTest("OPENBSD: returned EBUSY")
|
|
|
|
# XXX - most of the times the underlying sysctl() call on Net
|
|
# and Open BSD returns a truncated string.
|
|
# Also /proc/pid/cmdline behaves the same so it looks
|
|
# like this is a kernel bug.
|
|
# XXX - AIX truncates long arguments in /proc/pid/cmdline
|
|
if NETBSD or OPENBSD or AIX:
|
|
self.assertEqual(p.cmdline()[0], PYTHON_EXE)
|
|
else:
|
|
if MACOS and CI_TESTING:
|
|
pyexe = p.cmdline()[0]
|
|
if pyexe != PYTHON_EXE:
|
|
self.assertEqual(
|
|
' '.join(p.cmdline()[1:]), ' '.join(cmdline[1:])
|
|
)
|
|
return
|
|
if QEMU_USER:
|
|
self.assertEqual(' '.join(p.cmdline()[2:]), ' '.join(cmdline))
|
|
return
|
|
self.assertEqual(' '.join(p.cmdline()), ' '.join(cmdline))
|
|
|
|
@unittest.skipIf(PYPY, "broken on PYPY")
|
|
def test_long_cmdline(self):
|
|
cmdline = [PYTHON_EXE]
|
|
cmdline.extend(["-v"] * 50)
|
|
cmdline.extend(
|
|
["-c", "import time; [time.sleep(0.1) for x in range(100)]"]
|
|
)
|
|
p = self.spawn_psproc(cmdline)
|
|
if OPENBSD:
|
|
# XXX: for some reason the test process may turn into a
|
|
# zombie (don't know why).
|
|
try:
|
|
self.assertEqual(p.cmdline(), cmdline)
|
|
except psutil.ZombieProcess:
|
|
raise unittest.SkipTest("OPENBSD: process turned into zombie")
|
|
elif QEMU_USER:
|
|
self.assertEqual(p.cmdline()[2:], cmdline)
|
|
else:
|
|
ret = p.cmdline()
|
|
if NETBSD and ret == []:
|
|
# https://github.com/giampaolo/psutil/issues/2250
|
|
raise unittest.SkipTest("OPENBSD: returned EBUSY")
|
|
self.assertEqual(ret, cmdline)
|
|
|
|
def test_name(self):
|
|
p = self.spawn_psproc()
|
|
name = p.name().lower()
|
|
pyexe = os.path.basename(os.path.realpath(sys.executable)).lower()
|
|
assert pyexe.startswith(name), (pyexe, name)
|
|
|
|
@unittest.skipIf(PYPY or QEMU_USER, "unreliable on PYPY")
|
|
@unittest.skipIf(QEMU_USER, "unreliable on QEMU user")
|
|
def test_long_name(self):
|
|
pyexe = create_py_exe(self.get_testfn(suffix="0123456789" * 2))
|
|
cmdline = [
|
|
pyexe,
|
|
"-c",
|
|
"import time; [time.sleep(0.1) for x in range(100)]",
|
|
]
|
|
p = self.spawn_psproc(cmdline)
|
|
if OPENBSD:
|
|
# XXX: for some reason the test process may turn into a
|
|
# zombie (don't know why). Because the name() is long, all
|
|
# UNIX kernels truncate it to 15 chars, so internally psutil
|
|
# tries to guess the full name() from the cmdline(). But the
|
|
# cmdline() of a zombie on OpenBSD fails (internally), so we
|
|
# just compare the first 15 chars. Full explanation:
|
|
# https://github.com/giampaolo/psutil/issues/2239
|
|
try:
|
|
self.assertEqual(p.name(), os.path.basename(pyexe))
|
|
except AssertionError:
|
|
if p.status() == psutil.STATUS_ZOMBIE:
|
|
assert os.path.basename(pyexe).startswith(p.name())
|
|
else:
|
|
raise
|
|
else:
|
|
self.assertEqual(p.name(), os.path.basename(pyexe))
|
|
|
|
# XXX
|
|
@unittest.skipIf(SUNOS, "broken on SUNOS")
|
|
@unittest.skipIf(AIX, "broken on AIX")
|
|
@unittest.skipIf(PYPY, "broken on PYPY")
|
|
@unittest.skipIf(QEMU_USER, "broken on QEMU user")
|
|
def test_prog_w_funky_name(self):
|
|
# Test that name(), exe() and cmdline() correctly handle programs
|
|
# with funky chars such as spaces and ")", see:
|
|
# https://github.com/giampaolo/psutil/issues/628
|
|
pyexe = create_py_exe(self.get_testfn(suffix='foo bar )'))
|
|
cmdline = [
|
|
pyexe,
|
|
"-c",
|
|
"import time; [time.sleep(0.1) for x in range(100)]",
|
|
]
|
|
p = self.spawn_psproc(cmdline)
|
|
self.assertEqual(p.cmdline(), cmdline)
|
|
self.assertEqual(p.name(), os.path.basename(pyexe))
|
|
self.assertEqual(os.path.normcase(p.exe()), os.path.normcase(pyexe))
|
|
|
|
@unittest.skipIf(not POSIX, 'POSIX only')
|
|
def test_uids(self):
|
|
p = psutil.Process()
|
|
real, effective, _saved = p.uids()
|
|
# os.getuid() refers to "real" uid
|
|
self.assertEqual(real, os.getuid())
|
|
# os.geteuid() refers to "effective" uid
|
|
self.assertEqual(effective, os.geteuid())
|
|
# No such thing as os.getsuid() ("saved" uid), but starting
|
|
# from python 2.7 we have os.getresuid() which returns all
|
|
# of them.
|
|
if hasattr(os, "getresuid"):
|
|
self.assertEqual(os.getresuid(), p.uids())
|
|
|
|
@unittest.skipIf(not POSIX, 'POSIX only')
|
|
def test_gids(self):
|
|
p = psutil.Process()
|
|
real, effective, _saved = p.gids()
|
|
# os.getuid() refers to "real" uid
|
|
self.assertEqual(real, os.getgid())
|
|
# os.geteuid() refers to "effective" uid
|
|
self.assertEqual(effective, os.getegid())
|
|
# No such thing as os.getsgid() ("saved" gid), but starting
|
|
# from python 2.7 we have os.getresgid() which returns all
|
|
# of them.
|
|
if hasattr(os, "getresuid"):
|
|
self.assertEqual(os.getresgid(), p.gids())
|
|
|
|
def test_nice(self):
|
|
def cleanup(init):
|
|
try:
|
|
p.nice(init)
|
|
except psutil.AccessDenied:
|
|
pass
|
|
|
|
p = psutil.Process()
|
|
self.assertRaises(TypeError, p.nice, "str")
|
|
init = p.nice()
|
|
self.addCleanup(cleanup, init)
|
|
|
|
if WINDOWS:
|
|
highest_prio = None
|
|
for prio in [
|
|
psutil.IDLE_PRIORITY_CLASS,
|
|
psutil.BELOW_NORMAL_PRIORITY_CLASS,
|
|
psutil.NORMAL_PRIORITY_CLASS,
|
|
psutil.ABOVE_NORMAL_PRIORITY_CLASS,
|
|
psutil.HIGH_PRIORITY_CLASS,
|
|
psutil.REALTIME_PRIORITY_CLASS,
|
|
]:
|
|
with self.subTest(prio=prio):
|
|
try:
|
|
p.nice(prio)
|
|
except psutil.AccessDenied:
|
|
pass
|
|
else:
|
|
new_prio = p.nice()
|
|
# The OS may limit our maximum priority,
|
|
# even if the function succeeds. For higher
|
|
# priorities, we match either the expected
|
|
# value or the highest so far.
|
|
if prio in (
|
|
psutil.ABOVE_NORMAL_PRIORITY_CLASS,
|
|
psutil.HIGH_PRIORITY_CLASS,
|
|
psutil.REALTIME_PRIORITY_CLASS,
|
|
):
|
|
if new_prio == prio or highest_prio is None:
|
|
highest_prio = prio
|
|
self.assertEqual(new_prio, highest_prio)
|
|
else:
|
|
self.assertEqual(new_prio, prio)
|
|
else:
|
|
try:
|
|
if hasattr(os, "getpriority"):
|
|
self.assertEqual(
|
|
os.getpriority(os.PRIO_PROCESS, os.getpid()), p.nice()
|
|
)
|
|
p.nice(1)
|
|
self.assertEqual(p.nice(), 1)
|
|
if hasattr(os, "getpriority"):
|
|
self.assertEqual(
|
|
os.getpriority(os.PRIO_PROCESS, os.getpid()), p.nice()
|
|
)
|
|
# XXX - going back to previous nice value raises
|
|
# AccessDenied on MACOS
|
|
if not MACOS:
|
|
p.nice(0)
|
|
self.assertEqual(p.nice(), 0)
|
|
except psutil.AccessDenied:
|
|
pass
|
|
|
|
@unittest.skipIf(QEMU_USER, "QEMU user not supported")
|
|
def test_status(self):
|
|
p = psutil.Process()
|
|
self.assertEqual(p.status(), psutil.STATUS_RUNNING)
|
|
|
|
def test_username(self):
|
|
p = self.spawn_psproc()
|
|
username = p.username()
|
|
if WINDOWS:
|
|
domain, username = username.split('\\')
|
|
getpass_user = getpass.getuser()
|
|
if getpass_user.endswith('$'):
|
|
# When running as a service account (most likely to be
|
|
# NetworkService), these user name calculations don't produce
|
|
# the same result, causing the test to fail.
|
|
raise unittest.SkipTest('running as service account')
|
|
self.assertEqual(username, getpass_user)
|
|
if 'USERDOMAIN' in os.environ:
|
|
self.assertEqual(domain, os.environ['USERDOMAIN'])
|
|
else:
|
|
self.assertEqual(username, getpass.getuser())
|
|
|
|
def test_cwd(self):
|
|
p = self.spawn_psproc()
|
|
self.assertEqual(p.cwd(), os.getcwd())
|
|
|
|
def test_cwd_2(self):
|
|
cmd = [
|
|
PYTHON_EXE,
|
|
"-c",
|
|
(
|
|
"import os, time; os.chdir('..'); [time.sleep(0.1) for x in"
|
|
" range(100)]"
|
|
),
|
|
]
|
|
p = self.spawn_psproc(cmd)
|
|
call_until(p.cwd, "ret == os.path.dirname(os.getcwd())")
|
|
|
|
@unittest.skipIf(not HAS_CPU_AFFINITY, 'not supported')
|
|
def test_cpu_affinity(self):
|
|
p = psutil.Process()
|
|
initial = p.cpu_affinity()
|
|
assert initial, initial
|
|
self.addCleanup(p.cpu_affinity, initial)
|
|
|
|
if hasattr(os, "sched_getaffinity"):
|
|
self.assertEqual(initial, list(os.sched_getaffinity(p.pid)))
|
|
self.assertEqual(len(initial), len(set(initial)))
|
|
|
|
all_cpus = list(range(len(psutil.cpu_percent(percpu=True))))
|
|
for n in all_cpus:
|
|
p.cpu_affinity([n])
|
|
self.assertEqual(p.cpu_affinity(), [n])
|
|
if hasattr(os, "sched_getaffinity"):
|
|
self.assertEqual(
|
|
p.cpu_affinity(), list(os.sched_getaffinity(p.pid))
|
|
)
|
|
# also test num_cpu()
|
|
if hasattr(p, "num_cpu"):
|
|
self.assertEqual(p.cpu_affinity()[0], p.num_cpu())
|
|
|
|
# [] is an alias for "all eligible CPUs"; on Linux this may
|
|
# not be equal to all available CPUs, see:
|
|
# https://github.com/giampaolo/psutil/issues/956
|
|
p.cpu_affinity([])
|
|
if LINUX:
|
|
self.assertEqual(p.cpu_affinity(), p._proc._get_eligible_cpus())
|
|
else:
|
|
self.assertEqual(p.cpu_affinity(), all_cpus)
|
|
if hasattr(os, "sched_getaffinity"):
|
|
self.assertEqual(
|
|
p.cpu_affinity(), list(os.sched_getaffinity(p.pid))
|
|
)
|
|
|
|
self.assertRaises(TypeError, p.cpu_affinity, 1)
|
|
p.cpu_affinity(initial)
|
|
# it should work with all iterables, not only lists
|
|
p.cpu_affinity(set(all_cpus))
|
|
p.cpu_affinity(tuple(all_cpus))
|
|
|
|
@unittest.skipIf(not HAS_CPU_AFFINITY, 'not supported')
|
|
def test_cpu_affinity_errs(self):
|
|
p = self.spawn_psproc()
|
|
invalid_cpu = [len(psutil.cpu_times(percpu=True)) + 10]
|
|
self.assertRaises(ValueError, p.cpu_affinity, invalid_cpu)
|
|
self.assertRaises(ValueError, p.cpu_affinity, range(10000, 11000))
|
|
self.assertRaises(TypeError, p.cpu_affinity, [0, "1"])
|
|
self.assertRaises(ValueError, p.cpu_affinity, [0, -1])
|
|
|
|
@unittest.skipIf(not HAS_CPU_AFFINITY, 'not supported')
|
|
def test_cpu_affinity_all_combinations(self):
|
|
p = psutil.Process()
|
|
initial = p.cpu_affinity()
|
|
assert initial, initial
|
|
self.addCleanup(p.cpu_affinity, initial)
|
|
|
|
# All possible CPU set combinations.
|
|
if len(initial) > 12:
|
|
initial = initial[:12] # ...otherwise it will take forever
|
|
combos = []
|
|
for i in range(len(initial) + 1):
|
|
for subset in itertools.combinations(initial, i):
|
|
if subset:
|
|
combos.append(list(subset))
|
|
|
|
for combo in combos:
|
|
p.cpu_affinity(combo)
|
|
self.assertEqual(sorted(p.cpu_affinity()), sorted(combo))
|
|
|
|
# TODO: #595
|
|
@unittest.skipIf(BSD, "broken on BSD")
|
|
# can't find any process file on Appveyor
|
|
@unittest.skipIf(APPVEYOR, "unreliable on APPVEYOR")
|
|
def test_open_files(self):
|
|
p = psutil.Process()
|
|
testfn = self.get_testfn()
|
|
files = p.open_files()
|
|
self.assertNotIn(testfn, files)
|
|
with open(testfn, 'wb') as f:
|
|
f.write(b'x' * 1024)
|
|
f.flush()
|
|
# give the kernel some time to see the new file
|
|
files = call_until(p.open_files, "len(ret) != %i" % len(files))
|
|
filenames = [os.path.normcase(x.path) for x in files]
|
|
self.assertIn(os.path.normcase(testfn), filenames)
|
|
if LINUX:
|
|
for file in files:
|
|
if file.path == testfn:
|
|
self.assertEqual(file.position, 1024)
|
|
for file in files:
|
|
assert os.path.isfile(file.path), file
|
|
|
|
# another process
|
|
cmdline = (
|
|
"import time; f = open(r'%s', 'r'); [time.sleep(0.1) for x in"
|
|
" range(100)];" % testfn
|
|
)
|
|
p = self.spawn_psproc([PYTHON_EXE, "-c", cmdline])
|
|
|
|
for x in range(100):
|
|
filenames = [os.path.normcase(x.path) for x in p.open_files()]
|
|
if testfn in filenames:
|
|
break
|
|
time.sleep(0.01)
|
|
else:
|
|
self.assertIn(os.path.normcase(testfn), filenames)
|
|
for file in filenames:
|
|
assert os.path.isfile(file), file
|
|
|
|
# TODO: #595
|
|
@unittest.skipIf(BSD, "broken on BSD")
|
|
# can't find any process file on Appveyor
|
|
@unittest.skipIf(APPVEYOR, "unreliable on APPVEYOR")
|
|
def test_open_files_2(self):
|
|
# test fd and path fields
|
|
p = psutil.Process()
|
|
normcase = os.path.normcase
|
|
testfn = self.get_testfn()
|
|
with open(testfn, 'w') as fileobj:
|
|
for file in p.open_files():
|
|
if (
|
|
normcase(file.path) == normcase(fileobj.name)
|
|
or file.fd == fileobj.fileno()
|
|
):
|
|
break
|
|
else:
|
|
raise self.fail(
|
|
"no file found; files=%s" % (repr(p.open_files()))
|
|
)
|
|
self.assertEqual(normcase(file.path), normcase(fileobj.name))
|
|
if WINDOWS:
|
|
self.assertEqual(file.fd, -1)
|
|
else:
|
|
self.assertEqual(file.fd, fileobj.fileno())
|
|
# test positions
|
|
ntuple = p.open_files()[0]
|
|
self.assertEqual(ntuple[0], ntuple.path)
|
|
self.assertEqual(ntuple[1], ntuple.fd)
|
|
# test file is gone
|
|
self.assertNotIn(fileobj.name, p.open_files())
|
|
|
|
@unittest.skipIf(not POSIX, 'POSIX only')
|
|
def test_num_fds(self):
|
|
p = psutil.Process()
|
|
testfn = self.get_testfn()
|
|
start = p.num_fds()
|
|
file = open(testfn, 'w')
|
|
self.addCleanup(file.close)
|
|
self.assertEqual(p.num_fds(), start + 1)
|
|
sock = socket.socket()
|
|
self.addCleanup(sock.close)
|
|
self.assertEqual(p.num_fds(), start + 2)
|
|
file.close()
|
|
sock.close()
|
|
self.assertEqual(p.num_fds(), start)
|
|
|
|
@skip_on_not_implemented(only_if=LINUX)
|
|
@unittest.skipIf(OPENBSD or NETBSD, "not reliable on OPENBSD & NETBSD")
|
|
def test_num_ctx_switches(self):
|
|
p = psutil.Process()
|
|
before = sum(p.num_ctx_switches())
|
|
for _ in range(2):
|
|
time.sleep(0.05) # this shall ensure a context switch happens
|
|
after = sum(p.num_ctx_switches())
|
|
if after > before:
|
|
return
|
|
raise self.fail("num ctx switches still the same after 2 iterations")
|
|
|
|
def test_ppid(self):
|
|
p = psutil.Process()
|
|
if hasattr(os, 'getppid'):
|
|
self.assertEqual(p.ppid(), os.getppid())
|
|
p = self.spawn_psproc()
|
|
self.assertEqual(p.ppid(), os.getpid())
|
|
|
|
def test_parent(self):
|
|
p = self.spawn_psproc()
|
|
self.assertEqual(p.parent().pid, os.getpid())
|
|
|
|
lowest_pid = psutil.pids()[0]
|
|
self.assertIsNone(psutil.Process(lowest_pid).parent())
|
|
|
|
def test_parent_multi(self):
|
|
parent = psutil.Process()
|
|
child, grandchild = self.spawn_children_pair()
|
|
self.assertEqual(grandchild.parent(), child)
|
|
self.assertEqual(child.parent(), parent)
|
|
|
|
@unittest.skipIf(QEMU_USER, "QEMU user not supported")
|
|
@retry_on_failure()
|
|
def test_parents(self):
|
|
parent = psutil.Process()
|
|
assert parent.parents()
|
|
child, grandchild = self.spawn_children_pair()
|
|
self.assertEqual(child.parents()[0], parent)
|
|
self.assertEqual(grandchild.parents()[0], child)
|
|
self.assertEqual(grandchild.parents()[1], parent)
|
|
|
|
def test_children(self):
|
|
parent = psutil.Process()
|
|
self.assertEqual(parent.children(), [])
|
|
self.assertEqual(parent.children(recursive=True), [])
|
|
# On Windows we set the flag to 0 in order to cancel out the
|
|
# CREATE_NO_WINDOW flag (enabled by default) which creates
|
|
# an extra "conhost.exe" child.
|
|
child = self.spawn_psproc(creationflags=0)
|
|
children1 = parent.children()
|
|
children2 = parent.children(recursive=True)
|
|
for children in (children1, children2):
|
|
self.assertEqual(len(children), 1)
|
|
self.assertEqual(children[0].pid, child.pid)
|
|
self.assertEqual(children[0].ppid(), parent.pid)
|
|
|
|
def test_children_recursive(self):
|
|
# Test children() against two sub processes, p1 and p2, where
|
|
# p1 (our child) spawned p2 (our grandchild).
|
|
parent = psutil.Process()
|
|
child, grandchild = self.spawn_children_pair()
|
|
self.assertEqual(parent.children(), [child])
|
|
self.assertEqual(parent.children(recursive=True), [child, grandchild])
|
|
# If the intermediate process is gone there's no way for
|
|
# children() to recursively find it.
|
|
child.terminate()
|
|
child.wait()
|
|
self.assertEqual(parent.children(recursive=True), [])
|
|
|
|
def test_children_duplicates(self):
|
|
# find the process which has the highest number of children
|
|
table = collections.defaultdict(int)
|
|
for p in psutil.process_iter():
|
|
try:
|
|
table[p.ppid()] += 1
|
|
except psutil.Error:
|
|
pass
|
|
# this is the one, now let's make sure there are no duplicates
|
|
pid = sorted(table.items(), key=lambda x: x[1])[-1][0]
|
|
if LINUX and pid == 0:
|
|
raise unittest.SkipTest("PID 0")
|
|
p = psutil.Process(pid)
|
|
try:
|
|
c = p.children(recursive=True)
|
|
except psutil.AccessDenied: # windows
|
|
pass
|
|
else:
|
|
self.assertEqual(len(c), len(set(c)))
|
|
|
|
def test_parents_and_children(self):
|
|
parent = psutil.Process()
|
|
child, grandchild = self.spawn_children_pair()
|
|
# forward
|
|
children = parent.children(recursive=True)
|
|
self.assertEqual(len(children), 2)
|
|
self.assertEqual(children[0], child)
|
|
self.assertEqual(children[1], grandchild)
|
|
# backward
|
|
parents = grandchild.parents()
|
|
self.assertEqual(parents[0], child)
|
|
self.assertEqual(parents[1], parent)
|
|
|
|
def test_suspend_resume(self):
|
|
p = self.spawn_psproc()
|
|
p.suspend()
|
|
for _ in range(100):
|
|
if p.status() == psutil.STATUS_STOPPED:
|
|
break
|
|
time.sleep(0.01)
|
|
p.resume()
|
|
self.assertNotEqual(p.status(), psutil.STATUS_STOPPED)
|
|
|
|
def test_invalid_pid(self):
|
|
self.assertRaises(TypeError, psutil.Process, "1")
|
|
self.assertRaises(ValueError, psutil.Process, -1)
|
|
|
|
def test_as_dict(self):
|
|
p = psutil.Process()
|
|
d = p.as_dict(attrs=['exe', 'name'])
|
|
self.assertEqual(sorted(d.keys()), ['exe', 'name'])
|
|
|
|
p = psutil.Process(min(psutil.pids()))
|
|
d = p.as_dict(attrs=['net_connections'], ad_value='foo')
|
|
if not isinstance(d['net_connections'], list):
|
|
self.assertEqual(d['net_connections'], 'foo')
|
|
|
|
# Test ad_value is set on AccessDenied.
|
|
with mock.patch(
|
|
'psutil.Process.nice', create=True, side_effect=psutil.AccessDenied
|
|
):
|
|
self.assertEqual(
|
|
p.as_dict(attrs=["nice"], ad_value=1), {"nice": 1}
|
|
)
|
|
|
|
# Test that NoSuchProcess bubbles up.
|
|
with mock.patch(
|
|
'psutil.Process.nice',
|
|
create=True,
|
|
side_effect=psutil.NoSuchProcess(p.pid, "name"),
|
|
):
|
|
self.assertRaises(psutil.NoSuchProcess, p.as_dict, attrs=["nice"])
|
|
|
|
# Test that ZombieProcess is swallowed.
|
|
with mock.patch(
|
|
'psutil.Process.nice',
|
|
create=True,
|
|
side_effect=psutil.ZombieProcess(p.pid, "name"),
|
|
):
|
|
self.assertEqual(
|
|
p.as_dict(attrs=["nice"], ad_value="foo"), {"nice": "foo"}
|
|
)
|
|
|
|
# By default APIs raising NotImplementedError are
|
|
# supposed to be skipped.
|
|
with mock.patch(
|
|
'psutil.Process.nice', create=True, side_effect=NotImplementedError
|
|
):
|
|
d = p.as_dict()
|
|
self.assertNotIn('nice', list(d.keys()))
|
|
# ...unless the user explicitly asked for some attr.
|
|
with self.assertRaises(NotImplementedError):
|
|
p.as_dict(attrs=["nice"])
|
|
|
|
# errors
|
|
with self.assertRaises(TypeError):
|
|
p.as_dict('name')
|
|
with self.assertRaises(ValueError):
|
|
p.as_dict(['foo'])
|
|
with self.assertRaises(ValueError):
|
|
p.as_dict(['foo', 'bar'])
|
|
|
|
def test_oneshot(self):
|
|
p = psutil.Process()
|
|
with mock.patch("psutil._psplatform.Process.cpu_times") as m:
|
|
with p.oneshot():
|
|
p.cpu_times()
|
|
p.cpu_times()
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
with mock.patch("psutil._psplatform.Process.cpu_times") as m:
|
|
p.cpu_times()
|
|
p.cpu_times()
|
|
self.assertEqual(m.call_count, 2)
|
|
|
|
def test_oneshot_twice(self):
|
|
# Test the case where the ctx manager is __enter__ed twice.
|
|
# The second __enter__ is supposed to resut in a NOOP.
|
|
p = psutil.Process()
|
|
with mock.patch("psutil._psplatform.Process.cpu_times") as m1:
|
|
with mock.patch("psutil._psplatform.Process.oneshot_enter") as m2:
|
|
with p.oneshot():
|
|
p.cpu_times()
|
|
p.cpu_times()
|
|
with p.oneshot():
|
|
p.cpu_times()
|
|
p.cpu_times()
|
|
self.assertEqual(m1.call_count, 1)
|
|
self.assertEqual(m2.call_count, 1)
|
|
|
|
with mock.patch("psutil._psplatform.Process.cpu_times") as m:
|
|
p.cpu_times()
|
|
p.cpu_times()
|
|
self.assertEqual(m.call_count, 2)
|
|
|
|
def test_oneshot_cache(self):
|
|
# Make sure oneshot() cache is nonglobal. Instead it's
|
|
# supposed to be bound to the Process instance, see:
|
|
# https://github.com/giampaolo/psutil/issues/1373
|
|
p1, p2 = self.spawn_children_pair()
|
|
p1_ppid = p1.ppid()
|
|
p2_ppid = p2.ppid()
|
|
self.assertNotEqual(p1_ppid, p2_ppid)
|
|
with p1.oneshot():
|
|
self.assertEqual(p1.ppid(), p1_ppid)
|
|
self.assertEqual(p2.ppid(), p2_ppid)
|
|
with p2.oneshot():
|
|
self.assertEqual(p1.ppid(), p1_ppid)
|
|
self.assertEqual(p2.ppid(), p2_ppid)
|
|
|
|
def test_halfway_terminated_process(self):
|
|
# Test that NoSuchProcess exception gets raised in case the
|
|
# process dies after we create the Process object.
|
|
# Example:
|
|
# >>> proc = Process(1234)
|
|
# >>> time.sleep(2) # time-consuming task, process dies in meantime
|
|
# >>> proc.name()
|
|
# Refers to Issue #15
|
|
def assert_raises_nsp(fun, fun_name):
|
|
try:
|
|
ret = fun()
|
|
except psutil.ZombieProcess: # differentiate from NSP
|
|
raise
|
|
except psutil.NoSuchProcess:
|
|
pass
|
|
except psutil.AccessDenied:
|
|
if OPENBSD and fun_name in ('threads', 'num_threads'):
|
|
return
|
|
raise
|
|
else:
|
|
# NtQuerySystemInformation succeeds even if process is gone.
|
|
if WINDOWS and fun_name in ('exe', 'name'):
|
|
return
|
|
raise self.fail(
|
|
"%r didn't raise NSP and returned %r instead" % (fun, ret)
|
|
)
|
|
|
|
p = self.spawn_psproc()
|
|
p.terminate()
|
|
p.wait()
|
|
if WINDOWS: # XXX
|
|
call_until(psutil.pids, "%s not in ret" % p.pid)
|
|
self.assertProcessGone(p)
|
|
|
|
ns = process_namespace(p)
|
|
for fun, name in ns.iter(ns.all):
|
|
assert_raises_nsp(fun, name)
|
|
|
|
@unittest.skipIf(not POSIX, 'POSIX only')
|
|
def test_zombie_process(self):
|
|
_parent, zombie = self.spawn_zombie()
|
|
self.assertProcessZombie(zombie)
|
|
|
|
@unittest.skipIf(not POSIX, 'POSIX only')
|
|
def test_zombie_process_is_running_w_exc(self):
|
|
# Emulate a case where internally is_running() raises
|
|
# ZombieProcess.
|
|
p = psutil.Process()
|
|
with mock.patch(
|
|
"psutil.Process", side_effect=psutil.ZombieProcess(0)
|
|
) as m:
|
|
assert p.is_running()
|
|
assert m.called
|
|
|
|
@unittest.skipIf(not POSIX, 'POSIX only')
|
|
def test_zombie_process_status_w_exc(self):
|
|
# Emulate a case where internally status() raises
|
|
# ZombieProcess.
|
|
p = psutil.Process()
|
|
with mock.patch(
|
|
"psutil._psplatform.Process.status",
|
|
side_effect=psutil.ZombieProcess(0),
|
|
) as m:
|
|
self.assertEqual(p.status(), psutil.STATUS_ZOMBIE)
|
|
assert m.called
|
|
|
|
def test_reused_pid(self):
|
|
# Emulate a case where PID has been reused by another process.
|
|
if PY3:
|
|
from io import StringIO
|
|
else:
|
|
from StringIO import StringIO
|
|
|
|
subp = self.spawn_testproc()
|
|
p = psutil.Process(subp.pid)
|
|
p._ident = (p.pid, p.create_time() + 100)
|
|
|
|
list(psutil.process_iter())
|
|
self.assertIn(p.pid, psutil._pmap)
|
|
assert not p.is_running()
|
|
|
|
# make sure is_running() removed PID from process_iter()
|
|
# internal cache
|
|
with redirect_stderr(StringIO()) as f:
|
|
list(psutil.process_iter())
|
|
self.assertIn(
|
|
"refreshing Process instance for reused PID %s" % p.pid,
|
|
f.getvalue(),
|
|
)
|
|
self.assertNotIn(p.pid, psutil._pmap)
|
|
|
|
assert p != psutil.Process(subp.pid)
|
|
msg = "process no longer exists and its PID has been reused"
|
|
ns = process_namespace(p)
|
|
for fun, name in ns.iter(ns.setters + ns.killers, clear_cache=False):
|
|
with self.subTest(name=name):
|
|
self.assertRaisesRegex(psutil.NoSuchProcess, msg, fun)
|
|
|
|
self.assertIn("terminated + PID reused", str(p))
|
|
self.assertIn("terminated + PID reused", repr(p))
|
|
|
|
self.assertRaisesRegex(psutil.NoSuchProcess, msg, p.ppid)
|
|
self.assertRaisesRegex(psutil.NoSuchProcess, msg, p.parent)
|
|
self.assertRaisesRegex(psutil.NoSuchProcess, msg, p.parents)
|
|
self.assertRaisesRegex(psutil.NoSuchProcess, msg, p.children)
|
|
|
|
def test_pid_0(self):
|
|
# Process(0) is supposed to work on all platforms except Linux
|
|
if 0 not in psutil.pids():
|
|
self.assertRaises(psutil.NoSuchProcess, psutil.Process, 0)
|
|
# These 2 are a contradiction, but "ps" says PID 1's parent
|
|
# is PID 0.
|
|
assert not psutil.pid_exists(0)
|
|
self.assertEqual(psutil.Process(1).ppid(), 0)
|
|
return
|
|
|
|
p = psutil.Process(0)
|
|
exc = psutil.AccessDenied if WINDOWS else ValueError
|
|
self.assertRaises(exc, p.wait)
|
|
self.assertRaises(exc, p.terminate)
|
|
self.assertRaises(exc, p.suspend)
|
|
self.assertRaises(exc, p.resume)
|
|
self.assertRaises(exc, p.kill)
|
|
self.assertRaises(exc, p.send_signal, signal.SIGTERM)
|
|
|
|
# test all methods
|
|
ns = process_namespace(p)
|
|
for fun, name in ns.iter(ns.getters + ns.setters):
|
|
try:
|
|
ret = fun()
|
|
except psutil.AccessDenied:
|
|
pass
|
|
else:
|
|
if name in ("uids", "gids"):
|
|
self.assertEqual(ret.real, 0)
|
|
elif name == "username":
|
|
user = 'NT AUTHORITY\\SYSTEM' if WINDOWS else 'root'
|
|
self.assertEqual(p.username(), user)
|
|
elif name == "name":
|
|
assert name, name
|
|
|
|
if not OPENBSD:
|
|
self.assertIn(0, psutil.pids())
|
|
assert psutil.pid_exists(0)
|
|
|
|
@unittest.skipIf(not HAS_ENVIRON, "not supported")
|
|
def test_environ(self):
|
|
def clean_dict(d):
|
|
# Most of these are problematic on Travis.
|
|
d.pop("PLAT", None)
|
|
d.pop("HOME", None)
|
|
if MACOS:
|
|
d.pop("__CF_USER_TEXT_ENCODING", None)
|
|
d.pop("VERSIONER_PYTHON_PREFER_32_BIT", None)
|
|
d.pop("VERSIONER_PYTHON_VERSION", None)
|
|
return dict([
|
|
(
|
|
k.replace("\r", "").replace("\n", ""),
|
|
v.replace("\r", "").replace("\n", ""),
|
|
)
|
|
for k, v in d.items()
|
|
])
|
|
|
|
self.maxDiff = None
|
|
p = psutil.Process()
|
|
d1 = clean_dict(p.environ())
|
|
d2 = clean_dict(os.environ.copy())
|
|
if not OSX and GITHUB_ACTIONS:
|
|
self.assertEqual(d1, d2)
|
|
|
|
@unittest.skipIf(not HAS_ENVIRON, "not supported")
|
|
@unittest.skipIf(not POSIX, "POSIX only")
|
|
@unittest.skipIf(
|
|
MACOS_11PLUS,
|
|
"macOS 11+ can't get another process environment, issue #2084",
|
|
)
|
|
@unittest.skipIf(NETBSD, "sometimes fails on `assert is_running()`")
|
|
def test_weird_environ(self):
|
|
# environment variables can contain values without an equals sign
|
|
code = textwrap.dedent("""
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
|
|
char * const argv[] = {"cat", 0};
|
|
char * const envp[] = {"A=1", "X", "C=3", 0};
|
|
|
|
int main(void) {
|
|
// Close stderr on exec so parent can wait for the
|
|
// execve to finish.
|
|
if (fcntl(2, F_SETFD, FD_CLOEXEC) != 0)
|
|
return 0;
|
|
return execve("/bin/cat", argv, envp);
|
|
}
|
|
""")
|
|
cexe = create_c_exe(self.get_testfn(), c_code=code)
|
|
sproc = self.spawn_testproc(
|
|
[cexe], stdin=subprocess.PIPE, stderr=subprocess.PIPE
|
|
)
|
|
p = psutil.Process(sproc.pid)
|
|
wait_for_pid(p.pid)
|
|
assert p.is_running()
|
|
# Wait for process to exec or exit.
|
|
self.assertEqual(sproc.stderr.read(), b"")
|
|
if MACOS and CI_TESTING:
|
|
try:
|
|
env = p.environ()
|
|
except psutil.AccessDenied:
|
|
# XXX: fails sometimes with:
|
|
# PermissionError from 'sysctl(KERN_PROCARGS2) -> EIO'
|
|
return
|
|
else:
|
|
env = p.environ()
|
|
self.assertEqual(env, {"A": "1", "C": "3"})
|
|
sproc.communicate()
|
|
self.assertEqual(sproc.returncode, 0)
|
|
|
|
|
|
# ===================================================================
|
|
# --- Limited user tests
|
|
# ===================================================================
|
|
|
|
|
|
if POSIX and os.getuid() == 0:
|
|
|
|
class LimitedUserTestCase(TestProcess):
|
|
"""Repeat the previous tests by using a limited user.
|
|
Executed only on UNIX and only if the user who run the test script
|
|
is root.
|
|
"""
|
|
|
|
# the uid/gid the test suite runs under
|
|
if hasattr(os, 'getuid'):
|
|
PROCESS_UID = os.getuid()
|
|
PROCESS_GID = os.getgid()
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
# re-define all existent test methods in order to
|
|
# ignore AccessDenied exceptions
|
|
for attr in [x for x in dir(self) if x.startswith('test')]:
|
|
meth = getattr(self, attr)
|
|
|
|
def test_(self):
|
|
try:
|
|
meth() # noqa
|
|
except psutil.AccessDenied:
|
|
pass
|
|
|
|
setattr(self, attr, types.MethodType(test_, self))
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
os.setegid(1000)
|
|
os.seteuid(1000)
|
|
|
|
def tearDown(self):
|
|
os.setegid(self.PROCESS_UID)
|
|
os.seteuid(self.PROCESS_GID)
|
|
super().tearDown()
|
|
|
|
def test_nice(self):
|
|
try:
|
|
psutil.Process().nice(-1)
|
|
except psutil.AccessDenied:
|
|
pass
|
|
else:
|
|
raise self.fail("exception not raised")
|
|
|
|
@unittest.skipIf(1, "causes problem as root")
|
|
def test_zombie_process(self):
|
|
pass
|
|
|
|
|
|
# ===================================================================
|
|
# --- psutil.Popen tests
|
|
# ===================================================================
|
|
|
|
|
|
class TestPopen(PsutilTestCase):
|
|
"""Tests for psutil.Popen class."""
|
|
|
|
@classmethod
|
|
def tearDownClass(cls):
|
|
reap_children()
|
|
|
|
def test_misc(self):
|
|
# XXX this test causes a ResourceWarning on Python 3 because
|
|
# psutil.__subproc instance doesn't get properly freed.
|
|
# Not sure what to do though.
|
|
cmd = [
|
|
PYTHON_EXE,
|
|
"-c",
|
|
"import time; [time.sleep(0.1) for x in range(100)];",
|
|
]
|
|
with psutil.Popen(
|
|
cmd,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
env=PYTHON_EXE_ENV,
|
|
) as proc:
|
|
proc.name()
|
|
proc.cpu_times()
|
|
proc.stdin # noqa
|
|
self.assertTrue(dir(proc))
|
|
self.assertRaises(AttributeError, getattr, proc, 'foo')
|
|
proc.terminate()
|
|
if POSIX:
|
|
self.assertEqual(proc.wait(5), -signal.SIGTERM)
|
|
else:
|
|
self.assertEqual(proc.wait(5), signal.SIGTERM)
|
|
|
|
def test_ctx_manager(self):
|
|
with psutil.Popen(
|
|
[PYTHON_EXE, "-V"],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
stdin=subprocess.PIPE,
|
|
env=PYTHON_EXE_ENV,
|
|
) as proc:
|
|
proc.communicate()
|
|
assert proc.stdout.closed
|
|
assert proc.stderr.closed
|
|
assert proc.stdin.closed
|
|
self.assertEqual(proc.returncode, 0)
|
|
|
|
def test_kill_terminate(self):
|
|
# subprocess.Popen()'s terminate(), kill() and send_signal() do
|
|
# not raise exception after the process is gone. psutil.Popen
|
|
# diverges from that.
|
|
cmd = [
|
|
PYTHON_EXE,
|
|
"-c",
|
|
"import time; [time.sleep(0.1) for x in range(100)];",
|
|
]
|
|
with psutil.Popen(
|
|
cmd,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
env=PYTHON_EXE_ENV,
|
|
) as proc:
|
|
proc.terminate()
|
|
proc.wait()
|
|
self.assertRaises(psutil.NoSuchProcess, proc.terminate)
|
|
self.assertRaises(psutil.NoSuchProcess, proc.kill)
|
|
self.assertRaises(
|
|
psutil.NoSuchProcess, proc.send_signal, signal.SIGTERM
|
|
)
|
|
if WINDOWS:
|
|
self.assertRaises(
|
|
psutil.NoSuchProcess, proc.send_signal, signal.CTRL_C_EVENT
|
|
)
|
|
self.assertRaises(
|
|
psutil.NoSuchProcess,
|
|
proc.send_signal,
|
|
signal.CTRL_BREAK_EVENT,
|
|
)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
from psutil.tests.runner import run_from_name
|
|
|
|
run_from_name(__file__)
|