/usr/lib/python2.7/dist-packages/psutil/tests/__init__.py is in python-psutil 5.4.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 | # -*- coding: utf-8 -*-
# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""
Test utilities.
"""
from __future__ import print_function
import atexit
import contextlib
import ctypes
import errno
import functools
import os
import random
import re
import select
import shutil
import socket
import stat
import subprocess
import sys
import tempfile
import textwrap
import threading
import time
import traceback
import warnings
from socket import AF_INET
from socket import AF_INET6
from socket import SOCK_DGRAM
from socket import SOCK_STREAM
import psutil
from psutil import OSX
from psutil import POSIX
from psutil import SUNOS
from psutil import WINDOWS
from psutil._common import supports_ipv6
from psutil._compat import PY3
from psutil._compat import u
from psutil._compat import unicode
from psutil._compat import which
if sys.version_info < (2, 7):
import unittest2 as unittest # requires "pip install unittest2"
else:
import unittest
try:
from unittest import mock # py3
except ImportError:
import mock # NOQA - requires "pip install mock"
if sys.version_info >= (3, 4):
import enum
else:
enum = None
__all__ = [
# constants
'APPVEYOR', 'DEVNULL', 'GLOBAL_TIMEOUT', 'MEMORY_TOLERANCE', 'NO_RETRIES',
'PYPY', 'PYTHON_EXE', 'ROOT_DIR', 'SCRIPTS_DIR', 'TESTFILE_PREFIX',
'TESTFN', 'TESTFN_UNICODE', 'TOX', 'TRAVIS', 'VALID_PROC_STATUSES',
'VERBOSITY',
"HAS_CPU_AFFINITY", "HAS_CPU_FREQ", "HAS_ENVIRON", "HAS_PROC_IO_COUNTERS",
"HAS_IONICE", "HAS_MEMORY_MAPS", "HAS_PROC_CPU_NUM", "HAS_RLIMIT",
"HAS_SENSORS_BATTERY", "HAS_BATTERY", "HAS_SENSORS_FANS",
"HAS_SENSORS_TEMPERATURES", "HAS_MEMORY_FULL_INFO",
# subprocesses
'pyrun', 'reap_children', 'get_test_subprocess', 'create_zombie_proc',
'create_proc_children_pair',
# threads
'ThreadTask'
# test utils
'unittest', 'skip_on_access_denied', 'skip_on_not_implemented',
'retry_before_failing', 'run_test_module_by_name', 'get_suite',
'run_suite',
# install utils
'install_pip', 'install_test_deps',
# fs utils
'chdir', 'safe_rmpath', 'create_exe', 'decode_path', 'encode_path',
'unique_filename',
# os
'get_winver', 'get_kernel_version',
# sync primitives
'call_until', 'wait_for_pid', 'wait_for_file',
# network
'check_connection_ntuple', 'check_net_address',
'get_free_port', 'unix_socket_path', 'bind_socket', 'bind_unix_socket',
'tcp_socketpair', 'unix_socketpair', 'create_sockets',
# compat
'reload_module', 'import_module_by_path',
# others
'warn', 'copyload_shared_lib', 'is_namedtuple',
]
# ===================================================================
# --- constants
# ===================================================================
# --- platforms
TOX = os.getenv('TOX') or '' in ('1', 'true')
PYPY = '__pypy__' in sys.builtin_module_names
WIN_VISTA = (6, 0, 0) if WINDOWS else None
# whether we're running this test suite on Travis (https://travis-ci.org/)
TRAVIS = bool(os.environ.get('TRAVIS'))
# whether we're running this test suite on Appveyor for Windows
# (http://www.appveyor.com/)
APPVEYOR = bool(os.environ.get('APPVEYOR'))
# --- configurable defaults
# how many times retry_before_failing() decorator will retry
NO_RETRIES = 10
# bytes tolerance for system-wide memory related tests
MEMORY_TOLERANCE = 500 * 1024 # 500KB
# the timeout used in functions which have to wait
GLOBAL_TIMEOUT = 3
# test output verbosity
VERBOSITY = 1 if os.getenv('SILENT') or TOX else 2
# be more tolerant if we're on travis / appveyor in order to avoid
# false positives
if TRAVIS or APPVEYOR:
NO_RETRIES *= 3
GLOBAL_TIMEOUT *= 3
# --- files
TESTFILE_PREFIX = '$testfn'
TESTFN = os.path.join(os.path.realpath(os.getcwd()), TESTFILE_PREFIX)
_TESTFN = TESTFN + '-internal'
TESTFN_UNICODE = TESTFN + u("-ƒőő")
ASCII_FS = sys.getfilesystemencoding().lower() in ('ascii', 'us-ascii')
# --- paths
ROOT_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..'))
SCRIPTS_DIR = os.path.join(ROOT_DIR, 'scripts')
HERE = os.path.abspath(os.path.dirname(__file__))
# --- support
HAS_CPU_AFFINITY = hasattr(psutil.Process, "cpu_affinity")
HAS_CPU_FREQ = hasattr(psutil, "cpu_freq")
HAS_CONNECTIONS_UNIX = POSIX and not SUNOS
HAS_ENVIRON = hasattr(psutil.Process, "environ")
HAS_PROC_IO_COUNTERS = hasattr(psutil.Process, "io_counters")
HAS_IONICE = hasattr(psutil.Process, "ionice")
HAS_MEMORY_FULL_INFO = 'uss' in psutil.Process().memory_full_info()._fields
HAS_MEMORY_MAPS = hasattr(psutil.Process, "memory_maps")
HAS_PROC_CPU_NUM = hasattr(psutil.Process, "cpu_num")
HAS_RLIMIT = hasattr(psutil.Process, "rlimit")
HAS_THREADS = hasattr(psutil.Process, "threads")
HAS_SENSORS_BATTERY = hasattr(psutil, "sensors_battery")
HAS_BATTERY = HAS_SENSORS_BATTERY and psutil.sensors_battery()
HAS_SENSORS_FANS = hasattr(psutil, "sensors_fans")
HAS_SENSORS_TEMPERATURES = hasattr(psutil, "sensors_temperatures")
# --- misc
def _get_py_exe():
def attempt(exe):
try:
subprocess.check_call(
[exe, "-V"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
except Exception:
return None
else:
return exe
if OSX:
exe = \
attempt(sys.executable) or \
attempt(os.path.realpath(sys.executable)) or \
attempt(which("python%s.%s" % sys.version_info[:2])) or \
attempt(psutil.Process().exe())
if not exe:
raise ValueError("can't find python exe real abspath")
return exe
else:
exe = os.path.realpath(sys.executable)
assert os.path.exists(exe), exe
return exe
PYTHON_EXE = _get_py_exe()
DEVNULL = open(os.devnull, 'r+')
VALID_PROC_STATUSES = [getattr(psutil, x) for x in dir(psutil)
if x.startswith('STATUS_')]
AF_UNIX = getattr(socket, "AF_UNIX", object())
SOCK_SEQPACKET = getattr(socket, "SOCK_SEQPACKET", object())
_subprocesses_started = set()
_pids_started = set()
_testfiles_created = set()
@atexit.register
def _cleanup_files():
DEVNULL.close()
for name in os.listdir(u('.')):
if isinstance(name, unicode):
prefix = u(TESTFILE_PREFIX)
else:
prefix = TESTFILE_PREFIX
if name.startswith(prefix):
try:
safe_rmpath(name)
except Exception:
traceback.print_exc()
for path in _testfiles_created:
try:
safe_rmpath(path)
except Exception:
traceback.print_exc()
# this is executed first
@atexit.register
def _cleanup_procs():
reap_children(recursive=True)
# ===================================================================
# --- threads
# ===================================================================
class ThreadTask(threading.Thread):
"""A thread task which does nothing expect staying alive."""
def __init__(self):
threading.Thread.__init__(self)
self._running = False
self._interval = 0.001
self._flag = threading.Event()
def __repr__(self):
name = self.__class__.__name__
return '<%s running=%s at %#x>' % (name, self._running, id(self))
def __enter__(self):
self.start()
return self
def __exit__(self, *args, **kwargs):
self.stop()
def start(self):
"""Start thread and keep it running until an explicit
stop() request. Polls for shutdown every 'timeout' seconds.
"""
if self._running:
raise ValueError("already started")
threading.Thread.start(self)
self._flag.wait()
def run(self):
self._running = True
self._flag.set()
while self._running:
time.sleep(self._interval)
def stop(self):
"""Stop thread execution and and waits until it is stopped."""
if not self._running:
raise ValueError("already stopped")
self._running = False
self.join()
# ===================================================================
# --- subprocesses
# ===================================================================
def _cleanup_on_err(fun):
@functools.wraps(fun)
def wrapper(*args, **kwargs):
try:
return fun(*args, **kwargs)
except Exception:
reap_children()
raise
return wrapper
@_cleanup_on_err
def get_test_subprocess(cmd=None, **kwds):
"""Creates a python subprocess which does nothing for 60 secs and
return it as subprocess.Popen instance.
If "cmd" is specified that is used instead of python.
By default stdin and stdout are redirected to /dev/null.
It also attemps to make sure the process is in a reasonably
initialized state.
The process is registered for cleanup on reap_children().
"""
kwds.setdefault("stdin", DEVNULL)
kwds.setdefault("stdout", DEVNULL)
kwds.setdefault("cwd", os.getcwd())
kwds.setdefault("env", os.environ)
if WINDOWS:
# Prevents the subprocess to open error dialogs.
kwds.setdefault("creationflags", 0x8000000) # CREATE_NO_WINDOW
if cmd is None:
safe_rmpath(_TESTFN)
pyline = "from time import sleep;" \
"open(r'%s', 'w').close();" \
"sleep(60);" % _TESTFN
cmd = [PYTHON_EXE, "-c", pyline]
sproc = subprocess.Popen(cmd, **kwds)
_subprocesses_started.add(sproc)
wait_for_file(_TESTFN, delete=True, empty=True)
else:
sproc = subprocess.Popen(cmd, **kwds)
_subprocesses_started.add(sproc)
wait_for_pid(sproc.pid)
return sproc
@_cleanup_on_err
def create_proc_children_pair():
"""Create a subprocess which creates another one as in:
A (us) -> B (child) -> C (grandchild).
Return a (child, grandchild) tuple.
The 2 processes are fully initialized and will live for 60 secs
and are registered for cleanup on reap_children().
"""
_TESTFN2 = os.path.basename(_TESTFN) + '2' # need to be relative
s = textwrap.dedent("""\
import subprocess, os, sys, time
s = "import os, time;"
s += "f = open('%s', 'w');"
s += "f.write(str(os.getpid()));"
s += "f.close();"
s += "time.sleep(60);"
subprocess.Popen(['%s', '-c', s])
time.sleep(60)
""" % (_TESTFN2, PYTHON_EXE))
# On Windows if we create a subprocess with CREATE_NO_WINDOW flag
# set (which is the default) a "conhost.exe" extra process will be
# spawned as a child. We don't want that.
if WINDOWS:
subp = pyrun(s, creationflags=0)
else:
subp = pyrun(s)
child1 = psutil.Process(subp.pid)
data = wait_for_file(_TESTFN2, delete=False, empty=False)
os.remove(_TESTFN2)
child2_pid = int(data)
_pids_started.add(child2_pid)
child2 = psutil.Process(child2_pid)
return (child1, child2)
def create_zombie_proc():
"""Create a zombie process and return its PID."""
assert psutil.POSIX
unix_file = tempfile.mktemp(prefix=TESTFILE_PREFIX) if OSX else TESTFN
src = textwrap.dedent("""\
import os, sys, time, socket, contextlib
child_pid = os.fork()
if child_pid > 0:
time.sleep(3000)
else:
# this is the zombie process
s = socket.socket(socket.AF_UNIX)
with contextlib.closing(s):
s.connect('%s')
if sys.version_info < (3, ):
pid = str(os.getpid())
else:
pid = bytes(str(os.getpid()), 'ascii')
s.sendall(pid)
""" % unix_file)
with contextlib.closing(socket.socket(socket.AF_UNIX)) as sock:
sock.settimeout(GLOBAL_TIMEOUT)
sock.bind(unix_file)
sock.listen(1)
pyrun(src)
conn, _ = sock.accept()
try:
select.select([conn.fileno()], [], [], GLOBAL_TIMEOUT)
zpid = int(conn.recv(1024))
_pids_started.add(zpid)
zproc = psutil.Process(zpid)
call_until(lambda: zproc.status(), "ret == psutil.STATUS_ZOMBIE")
return zpid
finally:
conn.close()
@_cleanup_on_err
def pyrun(src, **kwds):
"""Run python 'src' code string in a separate interpreter.
Returns a subprocess.Popen instance.
"""
kwds.setdefault("stdout", None)
kwds.setdefault("stderr", None)
with tempfile.NamedTemporaryFile(
prefix=TESTFILE_PREFIX, mode="wt", delete=False) as f:
_testfiles_created.add(f.name)
f.write(src)
f.flush()
subp = get_test_subprocess([PYTHON_EXE, f.name], **kwds)
wait_for_pid(subp.pid)
return subp
@_cleanup_on_err
def sh(cmd, **kwds):
"""run cmd in a subprocess and return its output.
raises RuntimeError on error.
"""
shell = True if isinstance(cmd, (str, unicode)) else False
# Prevents subprocess to open error dialogs in case of error.
flags = 0x8000000 if WINDOWS and shell else 0
kwds.setdefault("shell", shell)
kwds.setdefault("stdout", subprocess.PIPE)
kwds.setdefault("stderr", subprocess.PIPE)
kwds.setdefault("universal_newlines", True)
kwds.setdefault("creationflags", flags)
p = subprocess.Popen(cmd, **kwds)
_subprocesses_started.add(p)
stdout, stderr = p.communicate()
if p.returncode != 0:
raise RuntimeError(stderr)
if stderr:
warn(stderr)
if stdout.endswith('\n'):
stdout = stdout[:-1]
return stdout
def reap_children(recursive=False):
"""Terminate and wait() any subprocess started by this test suite
and ensure that no zombies stick around to hog resources and
create problems when looking for refleaks.
If resursive is True it also tries to terminate and wait()
all grandchildren started by this process.
"""
# This is here to make sure wait_procs() behaves properly and
# investigate:
# https://ci.appveyor.com/project/giampaolo/psutil/build/job/
# jiq2cgd6stsbtn60
def assert_gone(pid):
assert not psutil.pid_exists(pid), pid
assert pid not in psutil.pids(), pid
try:
p = psutil.Process(pid)
assert not p.is_running(), pid
except psutil.NoSuchProcess:
pass
else:
assert 0, "pid %s is not gone" % pid
# Get the children here, before terminating the children sub
# processes as we don't want to lose the intermediate reference
# in case of grandchildren.
if recursive:
children = set(psutil.Process().children(recursive=True))
else:
children = set()
# Terminate subprocess.Popen instances "cleanly" by closing their
# fds and wiat()ing for them in order to avoid zombies.
while _subprocesses_started:
subp = _subprocesses_started.pop()
_pids_started.add(subp.pid)
try:
subp.terminate()
except OSError as err:
if err.errno != errno.ESRCH:
raise
if subp.stdout:
subp.stdout.close()
if subp.stderr:
subp.stderr.close()
try:
# Flushing a BufferedWriter may raise an error.
if subp.stdin:
subp.stdin.close()
finally:
# Wait for the process to terminate, to avoid zombies.
try:
subp.wait()
except OSError as err:
if err.errno != errno.ECHILD:
raise
# Terminate started pids.
while _pids_started:
pid = _pids_started.pop()
try:
p = psutil.Process(pid)
except psutil.NoSuchProcess:
assert_gone(pid)
else:
children.add(p)
# Terminate children.
if children:
for p in children:
try:
p.terminate()
except psutil.NoSuchProcess:
pass
gone, alive = psutil.wait_procs(children, timeout=GLOBAL_TIMEOUT)
for p in alive:
warn("couldn't terminate process %r; attempting kill()" % p)
try:
p.kill()
except psutil.NoSuchProcess:
pass
gone, alive = psutil.wait_procs(alive, timeout=GLOBAL_TIMEOUT)
if alive:
for p in alive:
warn("process %r survived kill()" % p)
for p in children:
assert_gone(p.pid)
# ===================================================================
# --- OS
# ===================================================================
def get_kernel_version():
"""Return a tuple such as (2, 6, 36)."""
if not POSIX:
raise NotImplementedError("not POSIX")
s = ""
uname = os.uname()[2]
for c in uname:
if c.isdigit() or c == '.':
s += c
else:
break
if not s:
raise ValueError("can't parse %r" % uname)
minor = 0
micro = 0
nums = s.split('.')
major = int(nums[0])
if len(nums) >= 2:
minor = int(nums[1])
if len(nums) >= 3:
micro = int(nums[2])
return (major, minor, micro)
def get_winver():
if not WINDOWS:
raise NotImplementedError("not WINDOWS")
wv = sys.getwindowsversion()
if hasattr(wv, 'service_pack_major'): # python >= 2.7
sp = wv.service_pack_major or 0
else:
r = re.search(r"\s\d$", wv[4])
if r:
sp = int(r.group(0))
else:
sp = 0
return (wv[0], wv[1], sp)
# ===================================================================
# --- sync primitives
# ===================================================================
class retry(object):
"""A retry decorator."""
def __init__(self,
exception=Exception,
timeout=None,
retries=None,
interval=0.001,
logfun=lambda s: print(s, file=sys.stderr),
):
if timeout and retries:
raise ValueError("timeout and retries args are mutually exclusive")
self.exception = exception
self.timeout = timeout
self.retries = retries
self.interval = interval
self.logfun = logfun
def __iter__(self):
if self.timeout:
stop_at = time.time() + self.timeout
while time.time() < stop_at:
yield
elif self.retries:
for _ in range(self.retries):
yield
else:
while True:
yield
def sleep(self):
if self.interval is not None:
time.sleep(self.interval)
def __call__(self, fun):
@functools.wraps(fun)
def wrapper(*args, **kwargs):
exc = None
for _ in self:
try:
return fun(*args, **kwargs)
except self.exception as _:
exc = _
if self.logfun is not None:
self.logfun(exc)
self.sleep()
continue
if PY3:
raise exc
else:
raise
# This way the user of the decorated function can change config
# parameters.
wrapper.decorator = self
return wrapper
@retry(exception=psutil.NoSuchProcess, logfun=None, timeout=GLOBAL_TIMEOUT,
interval=0.001)
def wait_for_pid(pid):
"""Wait for pid to show up in the process list then return.
Used in the test suite to give time the sub process to initialize.
"""
psutil.Process(pid)
if WINDOWS:
# give it some more time to allow better initialization
time.sleep(0.01)
@retry(exception=(EnvironmentError, AssertionError), logfun=None,
timeout=GLOBAL_TIMEOUT, interval=0.001)
def wait_for_file(fname, delete=True, empty=False):
"""Wait for a file to be written on disk with some content."""
with open(fname, "rb") as f:
data = f.read()
if not empty:
assert data
if delete:
os.remove(fname)
return data
@retry(exception=AssertionError, logfun=None, timeout=GLOBAL_TIMEOUT,
interval=0.001)
def call_until(fun, expr):
"""Keep calling function for timeout secs and exit if eval()
expression is True.
"""
ret = fun()
assert eval(expr)
return ret
# ===================================================================
# --- fs
# ===================================================================
def safe_rmpath(path):
"Convenience function for removing temporary test files or dirs"
try:
st = os.stat(path)
if stat.S_ISDIR(st.st_mode):
os.rmdir(path)
else:
os.remove(path)
except OSError as err:
if err.errno != errno.ENOENT:
raise
def safe_mkdir(dir):
"Convenience function for creating a directory"
try:
os.mkdir(dir)
except OSError as err:
if err.errno != errno.EEXIST:
raise
@contextlib.contextmanager
def chdir(dirname):
"Context manager which temporarily changes the current directory."
curdir = os.getcwd()
try:
os.chdir(dirname)
yield
finally:
os.chdir(curdir)
def create_exe(outpath, c_code=None):
"""Creates an executable file in the given location."""
assert not os.path.exists(outpath), outpath
if c_code:
if not which("gcc"):
raise ValueError("gcc is not installed")
if isinstance(c_code, bool): # c_code is True
c_code = textwrap.dedent(
"""
#include <unistd.h>
int main() {
pause();
return 1;
}
""")
assert isinstance(c_code, str), c_code
with tempfile.NamedTemporaryFile(
suffix='.c', delete=False, mode='wt') as f:
f.write(c_code)
try:
subprocess.check_call(["gcc", f.name, "-o", outpath])
finally:
safe_rmpath(f.name)
else:
# copy python executable
shutil.copyfile(PYTHON_EXE, outpath)
if POSIX:
st = os.stat(outpath)
os.chmod(outpath, st.st_mode | stat.S_IEXEC)
def unique_filename(prefix=TESTFILE_PREFIX, suffix=""):
return tempfile.mktemp(prefix=prefix, suffix=suffix)
# ===================================================================
# --- testing
# ===================================================================
class TestCase(unittest.TestCase):
# Print a full path representation of the single unit tests
# being run.
def __str__(self):
return "%s.%s.%s" % (
self.__class__.__module__, self.__class__.__name__,
self._testMethodName)
# assertRaisesRegexp renamed to assertRaisesRegex in 3.3;
# add support for the new name.
if not hasattr(unittest.TestCase, 'assertRaisesRegex'):
assertRaisesRegex = unittest.TestCase.assertRaisesRegexp
# override default unittest.TestCase
unittest.TestCase = TestCase
def _setup_tests():
if 'PSUTIL_TESTING' not in os.environ:
# This won't work on Windows but set_testing() below will do it.
os.environ['PSUTIL_TESTING'] = '1'
psutil._psplatform.cext.set_testing()
def get_suite():
testmods = [os.path.splitext(x)[0] for x in os.listdir(HERE)
if x.endswith('.py') and x.startswith('test_') and not
x.startswith('test_memory_leaks')]
if "WHEELHOUSE_UPLOADER_USERNAME" in os.environ:
testmods = [x for x in testmods if not x.endswith((
"osx", "posix", "linux"))]
suite = unittest.TestSuite()
for tm in testmods:
# ...so that the full test paths are printed on screen
tm = "psutil.tests.%s" % tm
suite.addTest(unittest.defaultTestLoader.loadTestsFromName(tm))
return suite
def run_suite():
_setup_tests()
result = unittest.TextTestRunner(verbosity=VERBOSITY).run(get_suite())
success = result.wasSuccessful()
sys.exit(0 if success else 1)
def run_test_module_by_name(name):
# testmodules = [os.path.splitext(x)[0] for x in os.listdir(HERE)
# if x.endswith('.py') and x.startswith('test_')]
_setup_tests()
name = os.path.splitext(os.path.basename(name))[0]
suite = unittest.TestSuite()
suite.addTest(unittest.defaultTestLoader.loadTestsFromName(name))
result = unittest.TextTestRunner(verbosity=VERBOSITY).run(suite)
success = result.wasSuccessful()
sys.exit(0 if success else 1)
def retry_before_failing(retries=NO_RETRIES):
"""Decorator which runs a test function and retries N times before
actually failing.
"""
return retry(exception=AssertionError, timeout=None, retries=retries)
def skip_on_access_denied(only_if=None):
"""Decorator to Ignore AccessDenied exceptions."""
def decorator(fun):
@functools.wraps(fun)
def wrapper(*args, **kwargs):
try:
return fun(*args, **kwargs)
except psutil.AccessDenied:
if only_if is not None:
if not only_if:
raise
raise unittest.SkipTest("raises AccessDenied")
return wrapper
return decorator
def skip_on_not_implemented(only_if=None):
"""Decorator to Ignore NotImplementedError exceptions."""
def decorator(fun):
@functools.wraps(fun)
def wrapper(*args, **kwargs):
try:
return fun(*args, **kwargs)
except NotImplementedError:
if only_if is not None:
if not only_if:
raise
msg = "%r was skipped because it raised NotImplementedError" \
% fun.__name__
raise unittest.SkipTest(msg)
return wrapper
return decorator
# ===================================================================
# --- network
# ===================================================================
def get_free_port(host='127.0.0.1'):
"""Return an unused TCP port."""
with contextlib.closing(socket.socket()) as sock:
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind((host, 0))
return sock.getsockname()[1]
@contextlib.contextmanager
def unix_socket_path(suffix=""):
"""A context manager which returns a non-existent file name
and tries to delete it on exit.
"""
assert psutil.POSIX
path = unique_filename(suffix=suffix)
try:
yield path
finally:
try:
os.unlink(path)
except OSError:
pass
def bind_socket(family=AF_INET, type=SOCK_STREAM, addr=None):
"""Binds a generic socket."""
if addr is None and family in (AF_INET, AF_INET6):
addr = ("", 0)
sock = socket.socket(family, type)
try:
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(addr)
if type == socket.SOCK_STREAM:
sock.listen(10)
return sock
except Exception:
sock.close()
raise
def bind_unix_socket(name, type=socket.SOCK_STREAM):
"""Bind a UNIX socket."""
assert psutil.POSIX
assert not os.path.exists(name), name
sock = socket.socket(socket.AF_UNIX, type)
try:
sock.bind(name)
if type == socket.SOCK_STREAM:
sock.listen(10)
except Exception:
sock.close()
raise
return sock
def tcp_socketpair(family, addr=("", 0)):
"""Build a pair of TCP sockets connected to each other.
Return a (server, client) tuple.
"""
with contextlib.closing(socket.socket(family, SOCK_STREAM)) as ll:
ll.bind(addr)
ll.listen(10)
addr = ll.getsockname()
c = socket.socket(family, SOCK_STREAM)
try:
c.connect(addr)
caddr = c.getsockname()
while True:
a, addr = ll.accept()
# check that we've got the correct client
if addr == caddr:
return (a, c)
a.close()
except OSError:
c.close()
raise
def unix_socketpair(name):
"""Build a pair of UNIX sockets connected to each other through
the same UNIX file name.
Return a (server, client) tuple.
"""
assert psutil.POSIX
server = client = None
try:
server = bind_unix_socket(name, type=socket.SOCK_STREAM)
server.setblocking(0)
client = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
client.setblocking(0)
client.connect(name)
# new = server.accept()
except Exception:
if server is not None:
server.close()
if client is not None:
client.close()
raise
return (server, client)
@contextlib.contextmanager
def create_sockets():
"""Open as many socket families / types as possible."""
socks = []
fname1 = fname2 = None
try:
socks.append(bind_socket(socket.AF_INET, socket.SOCK_STREAM))
socks.append(bind_socket(socket.AF_INET, socket.SOCK_DGRAM))
if supports_ipv6():
socks.append(bind_socket(socket.AF_INET6, socket.SOCK_STREAM))
socks.append(bind_socket(socket.AF_INET6, socket.SOCK_DGRAM))
if POSIX and HAS_CONNECTIONS_UNIX:
fname1 = unix_socket_path().__enter__()
fname2 = unix_socket_path().__enter__()
s1, s2 = unix_socketpair(fname1)
s3 = bind_unix_socket(fname2, type=socket.SOCK_DGRAM)
# self.addCleanup(safe_rmpath, fname1)
# self.addCleanup(safe_rmpath, fname2)
for s in (s1, s2, s3):
socks.append(s)
yield socks
finally:
for s in socks:
s.close()
if fname1 is not None:
safe_rmpath(fname1)
if fname2 is not None:
safe_rmpath(fname2)
def check_net_address(addr, family):
"""Check a net address validity. Supported families are IPv4,
IPv6 and MAC addresses.
"""
import ipaddress # python >= 3.3 / requires "pip install ipaddress"
if enum and PY3:
assert isinstance(family, enum.IntEnum), family
if family == socket.AF_INET:
octs = [int(x) for x in addr.split('.')]
assert len(octs) == 4, addr
for num in octs:
assert 0 <= num <= 255, addr
if not PY3:
addr = unicode(addr)
ipaddress.IPv4Address(addr)
elif family == socket.AF_INET6:
assert isinstance(addr, str), addr
if not PY3:
addr = unicode(addr)
ipaddress.IPv6Address(addr)
elif family == psutil.AF_LINK:
assert re.match(r'([a-fA-F0-9]{2}[:|\-]?){6}', addr) is not None, addr
else:
raise ValueError("unknown family %r", family)
def check_connection_ntuple(conn):
"""Check validity of a connection namedtuple."""
# check ntuple
assert len(conn) in (6, 7), conn
has_pid = len(conn) == 7
has_fd = getattr(conn, 'fd', -1) != -1
assert conn[0] == conn.fd
assert conn[1] == conn.family
assert conn[2] == conn.type
assert conn[3] == conn.laddr
assert conn[4] == conn.raddr
assert conn[5] == conn.status
if has_pid:
assert conn[6] == conn.pid
# check fd
if has_fd:
assert conn.fd >= 0, conn
if hasattr(socket, 'fromfd') and not WINDOWS:
try:
dupsock = socket.fromfd(conn.fd, conn.family, conn.type)
except (socket.error, OSError) as err:
if err.args[0] != errno.EBADF:
raise
else:
with contextlib.closing(dupsock):
assert dupsock.family == conn.family
assert dupsock.type == conn.type
# check family
assert conn.family in (AF_INET, AF_INET6, AF_UNIX), repr(conn.family)
if conn.family in (AF_INET, AF_INET6):
# actually try to bind the local socket; ignore IPv6
# sockets as their address might be represented as
# an IPv4-mapped-address (e.g. "::127.0.0.1")
# and that's rejected by bind()
if conn.family == AF_INET:
s = socket.socket(conn.family, conn.type)
with contextlib.closing(s):
try:
s.bind((conn.laddr[0], 0))
except socket.error as err:
if err.errno != errno.EADDRNOTAVAIL:
raise
elif conn.family == AF_UNIX:
assert conn.status == psutil.CONN_NONE, conn.status
# check type (SOCK_SEQPACKET may happen in case of AF_UNIX socks)
assert conn.type in (SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET), \
repr(conn.type)
if conn.type == SOCK_DGRAM:
assert conn.status == psutil.CONN_NONE, conn.status
# check laddr (IP address and port sanity)
for addr in (conn.laddr, conn.raddr):
if conn.family in (AF_INET, AF_INET6):
assert isinstance(addr, tuple), addr
if not addr:
continue
assert isinstance(addr.port, int), addr.port
assert 0 <= addr.port <= 65535, addr.port
check_net_address(addr.ip, conn.family)
elif conn.family == AF_UNIX:
assert isinstance(addr, str), addr
# check status
assert isinstance(conn.status, str), conn
valids = [getattr(psutil, x) for x in dir(psutil) if x.startswith('CONN_')]
assert conn.status in valids, conn
# ===================================================================
# --- compatibility
# ===================================================================
def reload_module(module):
"""Backport of importlib.reload of Python 3.3+."""
try:
import importlib
if not hasattr(importlib, 'reload'): # python <=3.3
raise ImportError
except ImportError:
import imp
return imp.reload(module)
else:
return importlib.reload(module)
def import_module_by_path(path):
name = os.path.splitext(os.path.basename(path))[0]
if sys.version_info[0] == 2:
import imp
return imp.load_source(name, path)
elif sys.version_info[:2] <= (3, 4):
from importlib.machinery import SourceFileLoader
return SourceFileLoader(name, path).load_module()
else:
import importlib.util
spec = importlib.util.spec_from_file_location(name, path)
mod = importlib.util.module_from_spec(spec)
spec.loader.exec_module(mod)
return mod
# ===================================================================
# --- others
# ===================================================================
def warn(msg):
"""Raise a warning msg."""
warnings.warn(msg, UserWarning)
def is_namedtuple(x):
"""Check if object is an instance of namedtuple."""
t = type(x)
b = t.__bases__
if len(b) != 1 or b[0] != tuple:
return False
f = getattr(t, '_fields', None)
if not isinstance(f, tuple):
return False
return all(type(n) == str for n in f)
if POSIX:
@contextlib.contextmanager
def copyload_shared_lib(dst_prefix=TESTFILE_PREFIX):
"""Ctx manager which picks up a random shared CO lib used
by this process, copies it in another location and loads it
in memory via ctypes. Return the new absolutized path.
"""
ext = ".so"
dst = tempfile.mktemp(prefix=dst_prefix, suffix=ext)
libs = [x.path for x in psutil.Process().memory_maps() if
os.path.splitext(x.path)[1] == ext and
'python' in x.path.lower()]
src = random.choice(libs)
shutil.copyfile(src, dst)
try:
ctypes.CDLL(dst)
yield dst
finally:
safe_rmpath(dst)
else:
@contextlib.contextmanager
def copyload_shared_lib(dst_prefix=TESTFILE_PREFIX):
"""Ctx manager which picks up a random shared DLL lib used
by this process, copies it in another location and loads it
in memory via ctypes.
Return the new absolutized, normcased path.
"""
from ctypes import wintypes
from ctypes import WinError
ext = ".dll"
dst = tempfile.mktemp(prefix=dst_prefix, suffix=ext)
libs = [x.path for x in psutil.Process().memory_maps() if
os.path.splitext(x.path)[1].lower() == ext and
'python' in os.path.basename(x.path).lower() and
'wow64' not in x.path.lower()]
src = random.choice(libs)
shutil.copyfile(src, dst)
cfile = None
try:
cfile = ctypes.WinDLL(dst)
yield dst
finally:
# Work around OverflowError:
# - https://ci.appveyor.com/project/giampaolo/psutil/build/1207/
# job/o53330pbnri9bcw7
# - http://bugs.python.org/issue30286
# - http://stackoverflow.com/questions/23522055
if cfile is not None:
FreeLibrary = ctypes.windll.kernel32.FreeLibrary
FreeLibrary.argtypes = [wintypes.HMODULE]
ret = FreeLibrary(cfile._handle)
if ret == 0:
WinError()
safe_rmpath(dst)
|