/usr/lib/python3/dist-packages/psutil/_pswindows.py is in python3-psutil 3.4.2-1.
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# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Windows platform implementation."""
import errno
import functools
import os
import sys
from collections import namedtuple
from . import _common
from . import _psutil_windows as cext
from ._common import conn_tmap
from ._common import isfile_strict
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 xrange
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__ = ["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",
]
# --- module level constants (gets pushed up to psutil module)
CONN_DELETE_TCB = "DELETE_TCB"
WAIT_TIMEOUT = 0x00000102 # 258 in decimal
ACCESS_DENIED_SET = frozenset([errno.EPERM, errno.EACCES,
cext.ERROR_ACCESS_DENIED])
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__)
scputimes = namedtuple('scputimes', ['user', 'system', 'idle'])
svmem = namedtuple('svmem', ['total', 'available', 'percent', 'used', 'free'])
pextmem = namedtuple(
'pextmem', ['num_page_faults', 'peak_wset', 'wset', 'peak_paged_pool',
'paged_pool', 'peak_nonpaged_pool', 'nonpaged_pool',
'pagefile', 'peak_pagefile', 'private'])
pmmap_grouped = namedtuple('pmmap_grouped', ['path', 'rss'])
pmmap_ext = namedtuple(
'pmmap_ext', 'addr perms ' + ' '.join(pmmap_grouped._fields))
ntpinfo = namedtuple(
'ntpinfo', ['num_handles', 'ctx_switches', 'user_time', 'kernel_time',
'create_time', 'num_threads', 'io_rcount', 'io_wcount',
'io_rbytes', 'io_wbytes'])
# set later from __init__.py
NoSuchProcess = None
AccessDenied = None
TimeoutExpired = None
@lru_cache(maxsize=512)
def _win32_QueryDosDevice(s):
return cext.win32_QueryDosDevice(s)
def _convert_raw_path(s):
# convert paths using native DOS format like:
# "\Device\HarddiskVolume1\Windows\systemew\file.txt"
# into: "C:\Windows\systemew\file.txt"
if PY3 and not isinstance(s, str):
s = s.decode('utf8')
rawdrive = '\\'.join(s.split('\\')[:3])
driveletter = _win32_QueryDosDevice(rawdrive)
return os.path.join(driveletter, s[len(rawdrive):])
def py2_strencode(s, encoding=sys.getfilesystemencoding()):
if PY3 or isinstance(s, str):
return s
else:
try:
return s.encode(encoding)
except UnicodeEncodeError:
# Filesystem codec failed, return the plain unicode
# string (this should never happen).
return s
# --- public functions
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)
def disk_usage(path):
"""Return disk usage associated with path."""
try:
total, free = cext.disk_usage(path)
except WindowsError:
if not os.path.exists(path):
msg = "No such file or directory: '%s'" % path
raise OSError(errno.ENOENT, msg)
raise
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]
def cpu_times():
"""Return system CPU times as a named tuple."""
user, system, idle = cext.cpu_times()
return scputimes(user, system, idle)
def per_cpu_times():
"""Return system per-CPU times as a list of named tuples."""
ret = []
for cpu_t in cext.per_cpu_times():
user, system, idle = cpu_t
item = scputimes(user, system, idle)
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 boot_time():
"""The system boot time expressed in seconds since the epoch."""
return cext.boot_time()
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
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():
ret = cext.net_if_stats()
for name, items in ret.items():
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():
ret = cext.net_io_counters()
return dict([(py2_strencode(k), v) for k, v in ret.items()])
def net_if_addrs():
ret = []
for items in cext.net_if_addrs():
items = list(items)
items[0] = py2_strencode(items[0])
ret.append(items)
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)
retlist.append(nt)
return retlist
pids = cext.pids
pid_exists = cext.pid_exists
disk_io_counters = cext.disk_io_counters
ppid_map = cext.ppid_map # not meant to be public
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:
# support for private module import
if NoSuchProcess is None or AccessDenied is None:
raise
if err.errno in ACCESS_DENIED_SET:
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
@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_raw_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]
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_SET:
# TODO: the C ext can probably be refactored in order
# to get this from cext.proc_info()
return cext.proc_memory_info_2(self.pid)
raise
@wrap_exceptions
def memory_info(self):
# on Windows RSS == WorkingSetSize and VSM == PagefileUsage
# fields of PROCESS_MEMORY_COUNTERS struct:
# http://msdn.microsoft.com/en-us/library/windows/desktop/
# ms684877(v=vs.85).aspx
t = self._get_raw_meminfo()
return _common.pmem(t[2], t[7])
@wrap_exceptions
def memory_info_ex(self):
return pextmem(*self._get_raw_meminfo())
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_SET:
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_raw_path(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:
timeout = cext.INFINITE
else:
# WaitForSingleObject() expects time in milliseconds
timeout = int(timeout * 1000)
ret = cext.proc_wait(self.pid, timeout)
if ret == WAIT_TIMEOUT:
# support for private module import
if TimeoutExpired is None:
raise RuntimeError("timeout expired")
raise TimeoutExpired(timeout, self.pid, self._name)
return ret
@wrap_exceptions
def username(self):
if self.pid in (0, 4):
return 'NT AUTHORITY\\SYSTEM'
return cext.proc_username(self.pid)
@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_SET:
return ntpinfo(*cext.proc_info(self.pid)).create_time
raise
@wrap_exceptions
def num_threads(self):
return ntpinfo(*cext.proc_info(self.pid)).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:
ret = cext.proc_cpu_times(self.pid)
except OSError as err:
if err.errno in ACCESS_DENIED_SET:
nt = ntpinfo(*cext.proc_info(self.pid))
ret = (nt.user_time, nt.kernel_time)
else:
raise
return _common.pcputimes(*ret)
@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_raw_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_SET:
nt = ntpinfo(*cext.proc_info(self.pid))
ret = (nt.io_rcount, nt.io_wcount, nt.io_rbytes, nt.io_wbytes)
else:
raise
return _common.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_SET:
return ntpinfo(*cext.proc_info(self.pid)).num_handles
raise
@wrap_exceptions
def num_ctx_switches(self):
ctx_switches = ntpinfo(*cext.proc_info(self.pid)).ctx_switches
# only voluntary ctx switches are supported
return _common.pctxsw(ctx_switches, 0)
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