| Current File : //usr/lib64/python3.6/site-packages/psutil/_pswindows.py |
# 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.
"""Windows platform implementation."""
import contextlib
import errno
import functools
import os
import sys
from collections import namedtuple
from . import _common
try:
from . import _psutil_windows as cext
except ImportError as err:
if str(err).lower().startswith("dll load failed") and \
sys.getwindowsversion()[0] < 6:
# We may get here if:
# 1) we are on an old Windows version
# 2) psutil was installed via pip + wheel
# See: https://github.com/giampaolo/psutil/issues/811
# It must be noted that psutil can still (kind of) work
# on outdated systems if compiled / installed from sources,
# but if we get here it means this this was a wheel (or exe).
msg = "this Windows version is too old (< Windows Vista); "
msg += "psutil 3.4.2 is the latest version which supports Windows "
msg += "2000, XP and 2003 server; it may be possible that psutil "
msg += "will work if compiled from sources though"
raise RuntimeError(msg)
else:
raise
from ._common import conn_tmap
from ._common import ENCODING
from ._common import ENCODING_ERRS
from ._common import isfile_strict
from ._common import memoize_when_activated
from ._common import parse_environ_block
from ._common import sockfam_to_enum
from ._common import socktype_to_enum
from ._common import usage_percent
from ._compat import long
from ._compat import lru_cache
from ._compat import PY3
from ._compat import unicode
from ._compat import xrange
from ._exceptions import AccessDenied
from ._exceptions import NoSuchProcess
from ._exceptions import TimeoutExpired
from ._psutil_windows import ABOVE_NORMAL_PRIORITY_CLASS
from ._psutil_windows import BELOW_NORMAL_PRIORITY_CLASS
from ._psutil_windows import HIGH_PRIORITY_CLASS
from ._psutil_windows import IDLE_PRIORITY_CLASS
from ._psutil_windows import NORMAL_PRIORITY_CLASS
from ._psutil_windows import REALTIME_PRIORITY_CLASS
if sys.version_info >= (3, 4):
import enum
else:
enum = None
# process priority constants, import from __init__.py:
# http://msdn.microsoft.com/en-us/library/ms686219(v=vs.85).aspx
__extra__all__ = [
"win_service_iter", "win_service_get",
"ABOVE_NORMAL_PRIORITY_CLASS", "BELOW_NORMAL_PRIORITY_CLASS",
"HIGH_PRIORITY_CLASS", "IDLE_PRIORITY_CLASS",
"NORMAL_PRIORITY_CLASS", "REALTIME_PRIORITY_CLASS",
"CONN_DELETE_TCB",
"AF_LINK",
]
# =====================================================================
# --- globals
# =====================================================================
CONN_DELETE_TCB = "DELETE_TCB"
WAIT_TIMEOUT = 0x00000102 # 258 in decimal
ACCESS_DENIED_ERRSET = frozenset([errno.EPERM, errno.EACCES,
cext.ERROR_ACCESS_DENIED])
NO_SUCH_SERVICE_ERRSET = frozenset([cext.ERROR_INVALID_NAME,
cext.ERROR_SERVICE_DOES_NOT_EXIST])
if enum is None:
AF_LINK = -1
else:
AddressFamily = enum.IntEnum('AddressFamily', {'AF_LINK': -1})
AF_LINK = AddressFamily.AF_LINK
TCP_STATUSES = {
cext.MIB_TCP_STATE_ESTAB: _common.CONN_ESTABLISHED,
cext.MIB_TCP_STATE_SYN_SENT: _common.CONN_SYN_SENT,
cext.MIB_TCP_STATE_SYN_RCVD: _common.CONN_SYN_RECV,
cext.MIB_TCP_STATE_FIN_WAIT1: _common.CONN_FIN_WAIT1,
cext.MIB_TCP_STATE_FIN_WAIT2: _common.CONN_FIN_WAIT2,
cext.MIB_TCP_STATE_TIME_WAIT: _common.CONN_TIME_WAIT,
cext.MIB_TCP_STATE_CLOSED: _common.CONN_CLOSE,
cext.MIB_TCP_STATE_CLOSE_WAIT: _common.CONN_CLOSE_WAIT,
cext.MIB_TCP_STATE_LAST_ACK: _common.CONN_LAST_ACK,
cext.MIB_TCP_STATE_LISTEN: _common.CONN_LISTEN,
cext.MIB_TCP_STATE_CLOSING: _common.CONN_CLOSING,
cext.MIB_TCP_STATE_DELETE_TCB: CONN_DELETE_TCB,
cext.PSUTIL_CONN_NONE: _common.CONN_NONE,
}
if enum is not None:
class Priority(enum.IntEnum):
ABOVE_NORMAL_PRIORITY_CLASS = ABOVE_NORMAL_PRIORITY_CLASS
BELOW_NORMAL_PRIORITY_CLASS = BELOW_NORMAL_PRIORITY_CLASS
HIGH_PRIORITY_CLASS = HIGH_PRIORITY_CLASS
IDLE_PRIORITY_CLASS = IDLE_PRIORITY_CLASS
NORMAL_PRIORITY_CLASS = NORMAL_PRIORITY_CLASS
REALTIME_PRIORITY_CLASS = REALTIME_PRIORITY_CLASS
globals().update(Priority.__members__)
pinfo_map = dict(
num_handles=0,
ctx_switches=1,
user_time=2,
kernel_time=3,
create_time=4,
num_threads=5,
io_rcount=6,
io_wcount=7,
io_rbytes=8,
io_wbytes=9,
io_count_others=10,
io_bytes_others=11,
num_page_faults=12,
peak_wset=13,
wset=14,
peak_paged_pool=15,
paged_pool=16,
peak_non_paged_pool=17,
non_paged_pool=18,
pagefile=19,
peak_pagefile=20,
mem_private=21,
)
# =====================================================================
# --- named tuples
# =====================================================================
# psutil.cpu_times()
scputimes = namedtuple('scputimes',
['user', 'system', 'idle', 'interrupt', 'dpc'])
# psutil.virtual_memory()
svmem = namedtuple('svmem', ['total', 'available', 'percent', 'used', 'free'])
# psutil.Process.memory_info()
pmem = namedtuple(
'pmem', ['rss', 'vms',
'num_page_faults', 'peak_wset', 'wset', 'peak_paged_pool',
'paged_pool', 'peak_nonpaged_pool', 'nonpaged_pool',
'pagefile', 'peak_pagefile', 'private'])
# psutil.Process.memory_full_info()
pfullmem = namedtuple('pfullmem', pmem._fields + ('uss', ))
# psutil.Process.memory_maps(grouped=True)
pmmap_grouped = namedtuple('pmmap_grouped', ['path', 'rss'])
# psutil.Process.memory_maps(grouped=False)
pmmap_ext = namedtuple(
'pmmap_ext', 'addr perms ' + ' '.join(pmmap_grouped._fields))
# psutil.Process.io_counters()
pio = namedtuple('pio', ['read_count', 'write_count',
'read_bytes', 'write_bytes',
'other_count', 'other_bytes'])
# =====================================================================
# --- utils
# =====================================================================
@lru_cache(maxsize=512)
def convert_dos_path(s):
r"""Convert paths using native DOS format like:
"\Device\HarddiskVolume1\Windows\systemew\file.txt"
into:
"C:\Windows\systemew\file.txt"
"""
rawdrive = '\\'.join(s.split('\\')[:3])
driveletter = cext.win32_QueryDosDevice(rawdrive)
return os.path.join(driveletter, s[len(rawdrive):])
def py2_strencode(s):
"""Encode a unicode string to a byte string by using the default fs
encoding + "replace" error handler.
"""
if PY3:
return s
else:
if isinstance(s, str):
return s
else:
return s.encode(ENCODING, errors=ENCODING_ERRS)
# =====================================================================
# --- memory
# =====================================================================
def virtual_memory():
"""System virtual memory as a namedtuple."""
mem = cext.virtual_mem()
totphys, availphys, totpagef, availpagef, totvirt, freevirt = mem
#
total = totphys
avail = availphys
free = availphys
used = total - avail
percent = usage_percent((total - avail), total, _round=1)
return svmem(total, avail, percent, used, free)
def swap_memory():
"""Swap system memory as a (total, used, free, sin, sout) tuple."""
mem = cext.virtual_mem()
total = mem[2]
free = mem[3]
used = total - free
percent = usage_percent(used, total, _round=1)
return _common.sswap(total, used, free, percent, 0, 0)
# =====================================================================
# --- disk
# =====================================================================
disk_io_counters = cext.disk_io_counters
def disk_usage(path):
"""Return disk usage associated with path."""
if PY3 and isinstance(path, bytes):
# XXX: do we want to use "strict"? Probably yes, in order
# to fail immediately. After all we are accepting input here...
path = path.decode(ENCODING, errors="strict")
total, free = cext.disk_usage(path)
used = total - free
percent = usage_percent(used, total, _round=1)
return _common.sdiskusage(total, used, free, percent)
def disk_partitions(all):
"""Return disk partitions."""
rawlist = cext.disk_partitions(all)
return [_common.sdiskpart(*x) for x in rawlist]
# =====================================================================
# --- CPU
# =====================================================================
def cpu_times():
"""Return system CPU times as a named tuple."""
user, system, idle = cext.cpu_times()
# Internally, GetSystemTimes() is used, and it doesn't return
# interrupt and dpc times. cext.per_cpu_times() does, so we
# rely on it to get those only.
percpu_summed = scputimes(*[sum(n) for n in zip(*cext.per_cpu_times())])
return scputimes(user, system, idle,
percpu_summed.interrupt, percpu_summed.dpc)
def per_cpu_times():
"""Return system per-CPU times as a list of named tuples."""
ret = []
for user, system, idle, interrupt, dpc in cext.per_cpu_times():
item = scputimes(user, system, idle, interrupt, dpc)
ret.append(item)
return ret
def cpu_count_logical():
"""Return the number of logical CPUs in the system."""
return cext.cpu_count_logical()
def cpu_count_physical():
"""Return the number of physical CPUs in the system."""
return cext.cpu_count_phys()
def cpu_stats():
"""Return CPU statistics."""
ctx_switches, interrupts, dpcs, syscalls = cext.cpu_stats()
soft_interrupts = 0
return _common.scpustats(ctx_switches, interrupts, soft_interrupts,
syscalls)
def cpu_freq():
"""Return CPU frequency.
On Windows per-cpu frequency is not supported.
"""
curr, max_ = cext.cpu_freq()
min_ = 0.0
return [_common.scpufreq(float(curr), min_, float(max_))]
# =====================================================================
# --- network
# =====================================================================
def net_connections(kind, _pid=-1):
"""Return socket connections. If pid == -1 return system-wide
connections (as opposed to connections opened by one process only).
"""
if kind not in conn_tmap:
raise ValueError("invalid %r kind argument; choose between %s"
% (kind, ', '.join([repr(x) for x in conn_tmap])))
families, types = conn_tmap[kind]
rawlist = cext.net_connections(_pid, families, types)
ret = set()
for item in rawlist:
fd, fam, type, laddr, raddr, status, pid = item
if laddr:
laddr = _common.addr(*laddr)
if raddr:
raddr = _common.addr(*raddr)
status = TCP_STATUSES[status]
fam = sockfam_to_enum(fam)
type = socktype_to_enum(type)
if _pid == -1:
nt = _common.sconn(fd, fam, type, laddr, raddr, status, pid)
else:
nt = _common.pconn(fd, fam, type, laddr, raddr, status)
ret.add(nt)
return list(ret)
def net_if_stats():
"""Get NIC stats (isup, duplex, speed, mtu)."""
ret = {}
rawdict = cext.net_if_stats()
for name, items in rawdict.items():
if not PY3:
assert isinstance(name, unicode), type(name)
name = py2_strencode(name)
isup, duplex, speed, mtu = items
if hasattr(_common, 'NicDuplex'):
duplex = _common.NicDuplex(duplex)
ret[name] = _common.snicstats(isup, duplex, speed, mtu)
return ret
def net_io_counters():
"""Return network I/O statistics for every network interface
installed on the system as a dict of raw tuples.
"""
ret = cext.net_io_counters()
return dict([(py2_strencode(k), v) for k, v in ret.items()])
def net_if_addrs():
"""Return the addresses associated to each NIC."""
ret = []
for items in cext.net_if_addrs():
items = list(items)
items[0] = py2_strencode(items[0])
ret.append(items)
return ret
# =====================================================================
# --- sensors
# =====================================================================
def sensors_battery():
"""Return battery information."""
# For constants meaning see:
# https://msdn.microsoft.com/en-us/library/windows/desktop/
# aa373232(v=vs.85).aspx
acline_status, flags, percent, secsleft = cext.sensors_battery()
power_plugged = acline_status == 1
no_battery = bool(flags & 128)
charging = bool(flags & 8)
if no_battery:
return None
if power_plugged or charging:
secsleft = _common.POWER_TIME_UNLIMITED
elif secsleft == -1:
secsleft = _common.POWER_TIME_UNKNOWN
return _common.sbattery(percent, secsleft, power_plugged)
# =====================================================================
# --- other system functions
# =====================================================================
_last_btime = 0
def boot_time():
"""The system boot time expressed in seconds since the epoch."""
# This dirty hack is to adjust the precision of the returned
# value which may have a 1 second fluctuation, see:
# https://github.com/giampaolo/psutil/issues/1007
global _last_btime
ret = float(cext.boot_time())
if abs(ret - _last_btime) <= 1:
return _last_btime
else:
_last_btime = ret
return ret
def users():
"""Return currently connected users as a list of namedtuples."""
retlist = []
rawlist = cext.users()
for item in rawlist:
user, hostname, tstamp = item
user = py2_strencode(user)
nt = _common.suser(user, None, hostname, tstamp, None)
retlist.append(nt)
return retlist
# =====================================================================
# --- Windows services
# =====================================================================
def win_service_iter():
"""Yields a list of WindowsService instances."""
for name, display_name in cext.winservice_enumerate():
yield WindowsService(py2_strencode(name), py2_strencode(display_name))
def win_service_get(name):
"""Open a Windows service and return it as a WindowsService instance."""
service = WindowsService(name, None)
service._display_name = service._query_config()['display_name']
return service
class WindowsService(object):
"""Represents an installed Windows service."""
def __init__(self, name, display_name):
self._name = name
self._display_name = display_name
def __str__(self):
details = "(name=%r, display_name=%r)" % (
self._name, self._display_name)
return "%s%s" % (self.__class__.__name__, details)
def __repr__(self):
return "<%s at %s>" % (self.__str__(), id(self))
def __eq__(self, other):
# Test for equality with another WindosService object based
# on name.
if not isinstance(other, WindowsService):
return NotImplemented
return self._name == other._name
def __ne__(self, other):
return not self == other
def _query_config(self):
with self._wrap_exceptions():
display_name, binpath, username, start_type = \
cext.winservice_query_config(self._name)
# XXX - update _self.display_name?
return dict(
display_name=py2_strencode(display_name),
binpath=py2_strencode(binpath),
username=py2_strencode(username),
start_type=py2_strencode(start_type))
def _query_status(self):
with self._wrap_exceptions():
status, pid = cext.winservice_query_status(self._name)
if pid == 0:
pid = None
return dict(status=status, pid=pid)
@contextlib.contextmanager
def _wrap_exceptions(self):
"""Ctx manager which translates bare OSError and WindowsError
exceptions into NoSuchProcess and AccessDenied.
"""
try:
yield
except WindowsError as err:
if err.errno in ACCESS_DENIED_ERRSET:
raise AccessDenied(
pid=None, name=self._name,
msg="service %r is not querable (not enough privileges)" %
self._name)
elif err.errno in NO_SUCH_SERVICE_ERRSET or \
err.winerror in NO_SUCH_SERVICE_ERRSET:
raise NoSuchProcess(
pid=None, name=self._name,
msg="service %r does not exist)" % self._name)
else:
raise
# config query
def name(self):
"""The service name. This string is how a service is referenced
and can be passed to win_service_get() to get a new
WindowsService instance.
"""
return self._name
def display_name(self):
"""The service display name. The value is cached when this class
is instantiated.
"""
return self._display_name
def binpath(self):
"""The fully qualified path to the service binary/exe file as
a string, including command line arguments.
"""
return self._query_config()['binpath']
def username(self):
"""The name of the user that owns this service."""
return self._query_config()['username']
def start_type(self):
"""A string which can either be "automatic", "manual" or
"disabled".
"""
return self._query_config()['start_type']
# status query
def pid(self):
"""The process PID, if any, else None. This can be passed
to Process class to control the service's process.
"""
return self._query_status()['pid']
def status(self):
"""Service status as a string."""
return self._query_status()['status']
def description(self):
"""Service long description."""
return py2_strencode(cext.winservice_query_descr(self.name()))
# utils
def as_dict(self):
"""Utility method retrieving all the information above as a
dictionary.
"""
d = self._query_config()
d.update(self._query_status())
d['name'] = self.name()
d['display_name'] = self.display_name()
d['description'] = self.description()
return d
# actions
# XXX: the necessary C bindings for start() and stop() are
# implemented but for now I prefer not to expose them.
# I may change my mind in the future. Reasons:
# - they require Administrator privileges
# - can't implement a timeout for stop() (unless by using a thread,
# which sucks)
# - would require adding ServiceAlreadyStarted and
# ServiceAlreadyStopped exceptions, adding two new APIs.
# - we might also want to have modify(), which would basically mean
# rewriting win32serviceutil.ChangeServiceConfig, which involves a
# lot of stuff (and API constants which would pollute the API), see:
# http://pyxr.sourceforge.net/PyXR/c/python24/lib/site-packages/
# win32/lib/win32serviceutil.py.html#0175
# - psutil is typically about "read only" monitoring stuff;
# win_service_* APIs should only be used to retrieve a service and
# check whether it's running
# def start(self, timeout=None):
# with self._wrap_exceptions():
# cext.winservice_start(self.name())
# if timeout:
# giveup_at = time.time() + timeout
# while True:
# if self.status() == "running":
# return
# else:
# if time.time() > giveup_at:
# raise TimeoutExpired(timeout)
# else:
# time.sleep(.1)
# def stop(self):
# # Note: timeout is not implemented because it's just not
# # possible, see:
# # http://stackoverflow.com/questions/11973228/
# with self._wrap_exceptions():
# return cext.winservice_stop(self.name())
# =====================================================================
# --- processes
# =====================================================================
pids = cext.pids
pid_exists = cext.pid_exists
ppid_map = cext.ppid_map # used internally by Process.children()
def wrap_exceptions(fun):
"""Decorator which translates bare OSError and WindowsError
exceptions into NoSuchProcess and AccessDenied.
"""
@functools.wraps(fun)
def wrapper(self, *args, **kwargs):
try:
return fun(self, *args, **kwargs)
except OSError as err:
if err.errno in ACCESS_DENIED_ERRSET:
raise AccessDenied(self.pid, self._name)
if err.errno == errno.ESRCH:
raise NoSuchProcess(self.pid, self._name)
raise
return wrapper
class Process(object):
"""Wrapper class around underlying C implementation."""
__slots__ = ["pid", "_name", "_ppid"]
def __init__(self, pid):
self.pid = pid
self._name = None
self._ppid = None
# --- oneshot() stuff
def oneshot_enter(self):
self.oneshot_info.cache_activate()
def oneshot_exit(self):
self.oneshot_info.cache_deactivate()
@memoize_when_activated
def oneshot_info(self):
"""Return multiple information about this process as a
raw tuple.
"""
ret = cext.proc_info(self.pid)
assert len(ret) == len(pinfo_map)
return ret
@wrap_exceptions
def name(self):
"""Return process name, which on Windows is always the final
part of the executable.
"""
# This is how PIDs 0 and 4 are always represented in taskmgr
# and process-hacker.
if self.pid == 0:
return "System Idle Process"
elif self.pid == 4:
return "System"
else:
try:
# Note: this will fail with AD for most PIDs owned
# by another user but it's faster.
return py2_strencode(os.path.basename(self.exe()))
except AccessDenied:
return py2_strencode(cext.proc_name(self.pid))
@wrap_exceptions
def exe(self):
# Note: os.path.exists(path) may return False even if the file
# is there, see:
# http://stackoverflow.com/questions/3112546/os-path-exists-lies
# see https://github.com/giampaolo/psutil/issues/414
# see https://github.com/giampaolo/psutil/issues/528
if self.pid in (0, 4):
raise AccessDenied(self.pid, self._name)
return py2_strencode(convert_dos_path(cext.proc_exe(self.pid)))
@wrap_exceptions
def cmdline(self):
ret = cext.proc_cmdline(self.pid)
if PY3:
return ret
else:
return [py2_strencode(s) for s in ret]
@wrap_exceptions
def environ(self):
ustr = cext.proc_environ(self.pid)
if ustr and not PY3:
assert isinstance(ustr, unicode), type(ustr)
return parse_environ_block(py2_strencode(ustr))
def ppid(self):
try:
return ppid_map()[self.pid]
except KeyError:
raise NoSuchProcess(self.pid, self._name)
def _get_raw_meminfo(self):
try:
return cext.proc_memory_info(self.pid)
except OSError as err:
if err.errno in ACCESS_DENIED_ERRSET:
# TODO: the C ext can probably be refactored in order
# to get this from cext.proc_info()
info = self.oneshot_info()
return (
info[pinfo_map['num_page_faults']],
info[pinfo_map['peak_wset']],
info[pinfo_map['wset']],
info[pinfo_map['peak_paged_pool']],
info[pinfo_map['paged_pool']],
info[pinfo_map['peak_non_paged_pool']],
info[pinfo_map['non_paged_pool']],
info[pinfo_map['pagefile']],
info[pinfo_map['peak_pagefile']],
info[pinfo_map['mem_private']],
)
raise
@wrap_exceptions
def memory_info(self):
# on Windows RSS == WorkingSetSize and VSM == PagefileUsage.
# Underlying C function returns fields of PROCESS_MEMORY_COUNTERS
# struct.
t = self._get_raw_meminfo()
rss = t[2] # wset
vms = t[7] # pagefile
return pmem(*(rss, vms, ) + t)
@wrap_exceptions
def memory_full_info(self):
basic_mem = self.memory_info()
uss = cext.proc_memory_uss(self.pid)
return pfullmem(*basic_mem + (uss, ))
def memory_maps(self):
try:
raw = cext.proc_memory_maps(self.pid)
except OSError as err:
# XXX - can't use wrap_exceptions decorator as we're
# returning a generator; probably needs refactoring.
if err.errno in ACCESS_DENIED_ERRSET:
raise AccessDenied(self.pid, self._name)
if err.errno == errno.ESRCH:
raise NoSuchProcess(self.pid, self._name)
raise
else:
for addr, perm, path, rss in raw:
path = convert_dos_path(path)
if not PY3:
assert isinstance(path, unicode), type(path)
path = py2_strencode(path)
addr = hex(addr)
yield (addr, perm, path, rss)
@wrap_exceptions
def kill(self):
return cext.proc_kill(self.pid)
@wrap_exceptions
def send_signal(self, sig):
os.kill(self.pid, sig)
@wrap_exceptions
def wait(self, timeout=None):
if timeout is None:
cext_timeout = cext.INFINITE
else:
# WaitForSingleObject() expects time in milliseconds
cext_timeout = int(timeout * 1000)
while True:
ret = cext.proc_wait(self.pid, cext_timeout)
if ret == WAIT_TIMEOUT:
raise TimeoutExpired(timeout, self.pid, self._name)
if pid_exists(self.pid):
if timeout is None:
continue
else:
raise TimeoutExpired(timeout, self.pid, self._name)
return ret
@wrap_exceptions
def username(self):
if self.pid in (0, 4):
return 'NT AUTHORITY\\SYSTEM'
domain, user = cext.proc_username(self.pid)
return py2_strencode(domain) + '\\' + py2_strencode(user)
@wrap_exceptions
def create_time(self):
# special case for kernel process PIDs; return system boot time
if self.pid in (0, 4):
return boot_time()
try:
return cext.proc_create_time(self.pid)
except OSError as err:
if err.errno in ACCESS_DENIED_ERRSET:
return self.oneshot_info()[pinfo_map['create_time']]
raise
@wrap_exceptions
def num_threads(self):
return self.oneshot_info()[pinfo_map['num_threads']]
@wrap_exceptions
def threads(self):
rawlist = cext.proc_threads(self.pid)
retlist = []
for thread_id, utime, stime in rawlist:
ntuple = _common.pthread(thread_id, utime, stime)
retlist.append(ntuple)
return retlist
@wrap_exceptions
def cpu_times(self):
try:
user, system = cext.proc_cpu_times(self.pid)
except OSError as err:
if err.errno in ACCESS_DENIED_ERRSET:
info = self.oneshot_info()
user = info[pinfo_map['user_time']]
system = info[pinfo_map['kernel_time']]
else:
raise
# Children user/system times are not retrievable (set to 0).
return _common.pcputimes(user, system, 0.0, 0.0)
@wrap_exceptions
def suspend(self):
return cext.proc_suspend(self.pid)
@wrap_exceptions
def resume(self):
return cext.proc_resume(self.pid)
@wrap_exceptions
def cwd(self):
if self.pid in (0, 4):
raise AccessDenied(self.pid, self._name)
# return a normalized pathname since the native C function appends
# "\\" at the and of the path
path = cext.proc_cwd(self.pid)
return py2_strencode(os.path.normpath(path))
@wrap_exceptions
def open_files(self):
if self.pid in (0, 4):
return []
ret = set()
# Filenames come in in native format like:
# "\Device\HarddiskVolume1\Windows\systemew\file.txt"
# Convert the first part in the corresponding drive letter
# (e.g. "C:\") by using Windows's QueryDosDevice()
raw_file_names = cext.proc_open_files(self.pid)
for _file in raw_file_names:
_file = convert_dos_path(_file)
if isfile_strict(_file):
if not PY3:
_file = py2_strencode(_file)
ntuple = _common.popenfile(_file, -1)
ret.add(ntuple)
return list(ret)
@wrap_exceptions
def connections(self, kind='inet'):
return net_connections(kind, _pid=self.pid)
@wrap_exceptions
def nice_get(self):
value = cext.proc_priority_get(self.pid)
if enum is not None:
value = Priority(value)
return value
@wrap_exceptions
def nice_set(self, value):
return cext.proc_priority_set(self.pid, value)
# available on Windows >= Vista
if hasattr(cext, "proc_io_priority_get"):
@wrap_exceptions
def ionice_get(self):
return cext.proc_io_priority_get(self.pid)
@wrap_exceptions
def ionice_set(self, value, _):
if _:
raise TypeError("set_proc_ionice() on Windows takes only "
"1 argument (2 given)")
if value not in (2, 1, 0):
raise ValueError("value must be 2 (normal), 1 (low) or 0 "
"(very low); got %r" % value)
return cext.proc_io_priority_set(self.pid, value)
@wrap_exceptions
def io_counters(self):
try:
ret = cext.proc_io_counters(self.pid)
except OSError as err:
if err.errno in ACCESS_DENIED_ERRSET:
info = self.oneshot_info()
ret = (
info[pinfo_map['io_rcount']],
info[pinfo_map['io_wcount']],
info[pinfo_map['io_rbytes']],
info[pinfo_map['io_wbytes']],
info[pinfo_map['io_count_others']],
info[pinfo_map['io_bytes_others']],
)
else:
raise
return pio(*ret)
@wrap_exceptions
def status(self):
suspended = cext.proc_is_suspended(self.pid)
if suspended:
return _common.STATUS_STOPPED
else:
return _common.STATUS_RUNNING
@wrap_exceptions
def cpu_affinity_get(self):
def from_bitmask(x):
return [i for i in xrange(64) if (1 << i) & x]
bitmask = cext.proc_cpu_affinity_get(self.pid)
return from_bitmask(bitmask)
@wrap_exceptions
def cpu_affinity_set(self, value):
def to_bitmask(l):
if not l:
raise ValueError("invalid argument %r" % l)
out = 0
for b in l:
out |= 2 ** b
return out
# SetProcessAffinityMask() states that ERROR_INVALID_PARAMETER
# is returned for an invalid CPU but this seems not to be true,
# therefore we check CPUs validy beforehand.
allcpus = list(range(len(per_cpu_times())))
for cpu in value:
if cpu not in allcpus:
if not isinstance(cpu, (int, long)):
raise TypeError(
"invalid CPU %r; an integer is required" % cpu)
else:
raise ValueError("invalid CPU %r" % cpu)
bitmask = to_bitmask(value)
cext.proc_cpu_affinity_set(self.pid, bitmask)
@wrap_exceptions
def num_handles(self):
try:
return cext.proc_num_handles(self.pid)
except OSError as err:
if err.errno in ACCESS_DENIED_ERRSET:
return self.oneshot_info()[pinfo_map['num_handles']]
raise
@wrap_exceptions
def num_ctx_switches(self):
ctx_switches = self.oneshot_info()[pinfo_map['ctx_switches']]
# only voluntary ctx switches are supported
return _common.pctxsw(ctx_switches, 0)