Update psutil to 5.7.0

[pyup-bot]

This PR updates psutil from 2.2.1 to 5.7.0.

Changelog

5.7.0

=====

2020-12-18

**Enhancements**

- 1637_: [SunOS] add partial support for old SunOS 5.10 Update 0 to 3.
- 1648_: [Linux] sensors_temperatures() looks into an additional /sys/device/
directory for additional data.  (patch by Javad Karabi)
- 1652_: [Windows] dropped support for Windows XP and Windows Server 2003.
Minimum supported Windows version now is Windows Vista.
- 1671_: [FreeBSD] add CI testing/service for FreeBSD (Cirrus CI).
- 1677_: [Windows] process exe() will succeed for all process PIDs (instead of
raising AccessDenied).
- 1679_: [Windows] net_connections() and Process.connections() are 10% faster.
- 1682_: [PyPy] added CI / test integration for PyPy via Travis.
- 1686_: [Windows] added support for PyPy on Windows.
- 1693_: [Windows] boot_time(), Process.create_time() and users()'s login time
now have 1 micro second precision (before the precision was of 1 second).

**Bug fixes**

- 1538_: [NetBSD] process cwd() may return ENOENT instead of NoSuchProcess.
- 1627_: [Linux] Process.memory_maps() can raise KeyError.
- 1642_: [SunOS] querying basic info for PID 0 results in FileNotFoundError.
- 1646_: [FreeBSD] many Process methods may cause a segfault on FreeBSD 12.0
due to a backward incompatible change in a C type introduced in 12.0.
- 1656_: [Windows] Process.memory_full_info() raises AccessDenied even for the
current user and os.getpid().
- 1660_: [Windows] Process.open_files() complete rewrite + check of errors.
- 1662_: [Windows] process exe() may raise WinError 0.
- 1665_: [Linux] disk_io_counters() does not take into account extra fields
added to recent kernels.  (patch by Mike Hommey)
- 1672_: use the right C type when dealing with PIDs (int or long). Thus far
(long) was almost always assumed, which is wrong on most platforms.
- 1673_: [OpenBSD] Process connections(), num_fds() and threads() returned
improper exception if process is gone.
- 1674_: [SunOS] disk_partitions() may raise OSError.
- 1684_: [Linux] disk_io_counters() may raise ValueError on systems not
having /proc/diskstats.
- 1695_: [Linux] could not compile on kernels <= 2.6.13 due to
PSUTIL_HAVE_IOPRIO not being defined.  (patch by Anselm Kruis)

5.6.7

=====

2019-11-26

**Bug fixes**

- 1630_: [Windows] can't compile source distribution due to C syntax error.

5.6.6

=====

2019-11-25

**Bug fixes**

- 1179_: [Linux] Process cmdline() now takes into account misbehaving processes
renaming the command line and using inappropriate chars to separate args.
- 1616_: use of Py_DECREF instead of Py_CLEAR will result in double free and
segfault
(`CVE-2019-18874 <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18874>`__).
(patch by Riccardo Schirone)
- 1619_: [OpenBSD] compilation fails due to C syntax error.  (patch by Nathan
Houghton)

5.6.5

=====

2019-11-06

**Bug fixes**

- 1615_: remove pyproject.toml as it was causing installation issues.

5.6.4

=====

2019-11-04

**Enhancements**

- 1527_: [Linux] added Process.cpu_times().iowait counter, which is the time
spent waiting for blocking I/O to complete.
- 1565_: add PEP 517/8 build backend and requirements specification for better
pip integration.  (patch by Bernát Gábor)

**Bug fixes**

- 875_: [Windows] Process' cmdline(), environ() or cwd() may occasionally fail
with ERROR_PARTIAL_COPY which now gets translated to AccessDenied.
- 1126_: [Linux] cpu_affinity() segfaults on CentOS 5 / manylinux.
cpu_affinity() support for CentOS 5 was removed.
- 1528_: [AIX] compilation error on AIX 7.2 due to 32 vs 64 bit differences.
(patch by Arnon Yaari)
- 1535_: 'type' and 'family' fields returned by net_connections() are not
always turned into enums.
- 1536_: [NetBSD] process cmdline() erroneously raise ZombieProcess error if
cmdline has non encodable chars.
- 1546_: usage percent may be rounded to 0 on Python 2.
- 1552_: [Windows] getloadavg() math for calculating 5 and 15 mins values is
incorrect.
- 1568_: [Linux] use CC compiler env var if defined.
- 1570_: [Windows] `NtWow64*` syscalls fail to raise the proper error code
- 1585_: [OSX] calling close() (in C) on possible negative integers.  (patch
by Athos Ribeiro)
- 1606_: [SunOS] compilation fails on SunOS 5.10.  (patch by vser1)

5.6.3

=====

2019-06-11

**Enhancements**

- 1494_: [AIX] added support for Process.environ().  (patch by Arnon Yaari)

**Bug fixes**

- 1276_: [AIX] can't get whole cmdline().  (patch by Arnon Yaari)
- 1501_: [Windows] Process cmdline() and exe() raise unhandled "WinError 1168
element not found" exceptions for "Registry" and "Memory Compression" psuedo
processes on Windows 10.
- 1526_: [NetBSD] process cmdline() could raise MemoryError.  (patch by
Kamil Rytarowski)

5.6.2

=====

2019-04-26

**Enhancements**

- 604_: [Windows, Windows] add new psutil.getloadavg(), returning system load
average calculation, including on Windows (emulated).  (patch by Ammar Askar)
- 1404_: [Linux] cpu_count(logical=False) uses a second method (read from
`/sys/devices/system/cpu/cpu[0-9]/topology/core_id`) in order to determine
the number of physical CPUs in case /proc/cpuinfo does not provide this info.
- 1458_: provide coloured test output. Also show failures on KeyboardInterrupt.
- 1464_: various docfixes (always point to python3 doc, fix links, etc.).
- 1476_: [Windows] it is now possible to set process high I/O priority
(ionice()).Also, I/O priority values are now exposed as 4 new constants:
IOPRIO_VERYLOW, IOPRIO_LOW, IOPRIO_NORMAL, IOPRIO_HIGH.
- 1478_: add make command to re-run tests failed on last run.

**Bug fixes**

- 1223_: [Windows] boot_time() may return value on Windows XP.
- 1456_: [Linux] cpu_freq() returns None instead of 0.0 when min/max not
available (patch by Alex Manuskin)
- 1462_: [Linux] (tests) make tests invariant to LANG setting (patch by
Benjamin Drung)
- 1463_: cpu_distribution.py script was broken.
- 1470_: [Linux] disk_partitions(): fix corner case when /etc/mtab doesn't
exist.  (patch by Cedric Lamoriniere)
- 1471_: [SunOS] Process name() and cmdline() can return SystemError.  (patch
by Daniel Beer)
- 1472_: [Linux] cpu_freq() does not return all CPUs on Rasbperry-pi 3.
- 1474_: fix formatting of psutil.tests() which mimicks 'ps aux' output.
- 1475_: [Windows] OSError.winerror attribute wasn't properly checked resuling
in WindowsError being raised instead of AccessDenied.
- 1477_: [Windows] wrong or absent error handling for private NTSTATUS Windows
APIs. Different process methods were affected by this.
- 1480_: [Windows] psutil.cpu_count(logical=False) could cause a crash due to
fixed read violation.  (patch by Samer Masterson)
- 1486_: [AIX, SunOS] AttributeError when interacting with Process methods
involved into oneshot() context.
- 1491_: [SunOS] net_if_addrs(): free() ifap struct on error.  (patch by
Agnewee)
- 1493_: [Linux] cpu_freq(): handle the case where
/sys/devices/system/cpu/cpufreq/ exists but is empty.

5.6.1

=====

2019-03-11

**Bug fixes**

- 1329_: [AIX] psutil doesn't compile on AIX 6.1.  (patch by Arnon Yaari)
- 1448_: [Windows] crash on import due to rtlIpv6AddressToStringA not available
on Wine.
- 1451_: [Windows] Process.memory_full_info() segfaults. NtQueryVirtualMemory
is now used instead of QueryWorkingSet to calculate USS memory.

5.6.0

=====

2019-03-05

**Enhancements**

- 1379_: [Windows] Process suspend() and resume() now use NtSuspendProcess
and NtResumeProcess instead of stopping/resuming all threads of a process.
This is faster and more reliable (aka this is what ProcessHacker does).
- 1420_: [Windows] in case of exception disk_usage() now also shows the path
name.
- 1422_: [Windows] Windows APIs requiring to be dynamically loaded from DLL
libraries are now loaded only once on startup (instead of on per function
call) significantly speeding up different functions and methods.
- 1426_: [Windows] PAGESIZE and number of processors is now calculated on
startup.
- 1428_: in case of error, the traceback message now shows the underlying C
function called which failed.
- 1433_: new Process.parents() method.  (idea by Ghislain Le Meur)
- 1437_: pids() are returned in sorted order.
- 1442_: python3 is now the default interpreter used by Makefile.

**Bug fixes**

- 1353_: process_iter() is now thread safe (it rarely raised TypeError).
- 1394_: [Windows] Process name() and exe() may erroneously return "Registry".
QueryFullProcessImageNameW is now used instead of GetProcessImageFileNameW
in order to prevent that.
- 1411_: [BSD] lack of Py_DECREF could cause segmentation fault on process
instantiation.
- 1419_: [Windows] Process.environ() raises NotImplementedError when querying
a 64-bit process in 32-bit-WoW mode. Now it raises AccessDenied.
- 1427_: [OSX] Process cmdline() and environ() may erroneously raise OSError
on failed malloc().
- 1429_: [Windows] SE DEBUG was not properly set for current process. It is
now, and it should result in less AccessDenied exceptions for low-pid
processes.
- 1432_: [Windows] Process.memory_info_ex()'s USS memory is miscalculated
because we're not using the actual system PAGESIZE.
- 1439_: [NetBSD] Process.connections() may return incomplete results if using
oneshot().
- 1447_: original exception wasn't turned into NSP/AD exceptions when using
Process.oneshot() ctx manager.

**Incompatible API changes**

- 1291_: [OSX] Process.memory_maps() was removed because inherently broken
(segfault) for years.

5.5.1

=====

2019-02-15

**Enhancements**

- 1348_: [Windows] on Windows >= 8.1 if Process.cmdline() fails due to
ERROR_ACCESS_DENIED attempt using NtQueryInformationProcess +
ProcessCommandLineInformation. (patch by EccoTheFlintstone)

**Bug fixes**

- 1394_: [Windows] Process.exe() returns "[Error 0] The operation completed
successfully" when Python process runs in "Virtual Secure Mode".
- 1402_: psutil exceptions' repr() show the internal private module path.
- 1408_: [AIX] psutil won't compile on AIX 7.1 due to missing header.  (patch
by Arnon Yaari)

5.5.0

=====

2019-01-23

**Enhancements**

- 1350_: [FreeBSD] added support for sensors_temperatures().  (patch by Alex
Manuskin)
- 1352_: [FreeBSD] added support for CPU frequency.  (patch by Alex Manuskin)

**Bug fixes**

- 1111_: Process.oneshot() is now thread safe.
- 1354_: [Linux] disk_io_counters() fails on Linux kernel 4.18+.
- 1357_: [Linux] Process' memory_maps() and io_counters() method are no longer
exposed if not supported by the kernel.
- 1368_: [Windows] fix psutil.Process().ionice(...) mismatch.  (patch by
EccoTheFlintstone)
- 1370_: [Windows] improper usage of CloseHandle() may lead to override the
original error code when raising an exception.
- 1373_: incorrect handling of cache in Process.oneshot() context causes
Process instances to return incorrect results.
- 1376_: [Windows] OpenProcess() now uses PROCESS_QUERY_LIMITED_INFORMATION
access rights wherever possible, resulting in less AccessDenied exceptions
being thrown for system processes.
- 1376_: [Windows] check if variable is NULL before free()ing it.  (patch by
EccoTheFlintstone)

5.4.8

=====

2018-10-30

**Enhancements**

- 1197_: [Linux] cpu_freq() is now implemented by parsing /proc/cpuinfo in case
/sys/devices/system/cpu/* filesystem is not available.
- 1310_: [Linux] psutil.sensors_temperatures() now parses /sys/class/thermal
in case /sys/class/hwmon fs is not available (e.g. Raspberry Pi).  (patch
by Alex Manuskin)
- 1320_: [Posix] better compilation support when using g++ instead of gcc.
(patch by Jaime Fullaondo)

**Bug fixes**

- 715_: do not print exception on import time in case cpu_times() fails.
- 1004_: [Linux] Process.io_counters() may raise ValueError.
- 1277_: [OSX] available and used memory (psutil.virtual_memory()) metrics are
not accurate.
- 1294_: [Windows] psutil.Process().connections() may sometimes fail with
intermittent 0xC0000001.  (patch by Sylvain Duchesne)
- 1307_: [Linux] disk_partitions() does not honour PROCFS_PATH.
- 1320_: [AIX] system CPU times (psutil.cpu_times()) were being reported with
ticks unit as opposed to seconds.  (patch by Jaime Fullaondo)
- 1332_: [OSX] psutil debug messages are erroneously printed all the time.
(patch by Ilya Yanok)
- 1346_: [SunOS] net_connections() returns an empty list.  (patch by Oleksii
Shevchuk)

5.4.7

=====

2018-08-14

**Enhancements**

- 1286_: [macOS] psutil.OSX constant is now deprecated in favor of new
psutil.MACOS.
- 1309_: [Linux] added psutil.STATUS_PARKED constant for Process.status().
- 1321_: [Linux] add disk_io_counters() dual implementation relying on
/sys/block filesystem in case /proc/diskstats is not available. (patch by
Lawrence Ye)

**Bug fixes**

- 1209_: [macOS] Process.memory_maps() may fail with EINVAL due to poor
task_for_pid() syscall. AccessDenied is now raised instead.
- 1278_: [macOS] Process.threads() incorrectly return microseconds instead of
seconds. (patch by Nikhil Marathe)
- 1279_: [Linux, macOS, BSD] net_if_stats() may return ENODEV.
- 1294_: [Windows] psutil.Process().connections() may sometime fail with
MemoryError.  (patch by sylvainduchesne)
- 1305_: [Linux] disk_io_stats() may report inflated r/w bytes values.
- 1309_: [Linux] Process.status() is unable to recognize "idle" and "parked"
statuses (returns '?').
- 1313_: [Linux] disk_io_counters() can report inflated IO counters due to
erroneously counting base disk device and its partition(s) twice.
- 1323_: [Linux] sensors_temperatures() may fail with ValueError.

5.4.6

=====

2018-06-07

**Bug fixes**

- 1258_: [Windows] Process.username() may cause a segfault (Python interpreter
crash).  (patch by Jean-Luc Migot)
- 1273_: net_if_addr() namedtuple's name has been renamed from "snic" to
"snicaddr".
- 1274_: [Linux] there was a small chance Process.children() may swallow
AccessDenied exceptions.

5.4.5

=====

2018-04-14

**Bug fixes**

- 1268_: setup.py's extra_require parameter requires latest setuptools version,
breaking quite a lot of installations.

5.4.4

=====

2018-04-13

**Enhancements**

- 1239_: [Linux] expose kernel "slab" memory for psutil.virtual_memory().
(patch by Maxime Mouial)

**Bug fixes**

- 694_: [SunOS] cmdline() could be truncated at the 15th character when
reading it from /proc. An extra effort is made by reading it from process
address space first.  (patch by Georg Sauthoff)
- 771_: [Windows] cpu_count() (both logical and physical) return a wrong
(smaller) number on systems using process groups (> 64 cores).
- 771_: [Windows] cpu_times(percpu=True) return fewer CPUs on systems using
process groups (> 64 cores).
- 771_: [Windows] cpu_stats() and cpu_freq() may return incorrect results on
systems using process groups (> 64 cores).
- 1193_: [SunOS] Return uid/gid from /proc/pid/psinfo if there aren't
enough permissions for /proc/pid/cred.  (patch by Georg Sauthoff)
- 1194_: [SunOS] Return nice value from psinfo as getpriority() doesn't
support real-time processes.  (patch by Georg Sauthoff)
- 1194_: [SunOS] Fix double free in psutil_proc_cpu_num().  (patch by Georg
Sauthoff)
- 1194_: [SunOS] Fix undefined behavior related to strict-aliasing rules
and warnings.  (patch by Georg Sauthoff)
- 1210_: [Linux] cpu_percent() steal time may remain stuck at 100% due to Linux
erroneously reporting a decreased steal time between calls. (patch by Arnon
Yaari)
- 1216_: fix compatibility with python 2.6 on Windows (patch by Dan Vinakovsky)
- 1222_: [Linux] Process.memory_full_info() was erroneously summing "Swap:" and
"SwapPss:". Same for "Pss:" and "SwapPss". Not anymore.
- 1224_: [Windows] Process.wait() may erroneously raise TimeoutExpired.
- 1238_: [Linux] sensors_battery() may return None in case battery is not
listed as "BAT0" under /sys/class/power_supply.
- 1240_: [Windows] cpu_times() float loses accuracy in a long running system.
(patch by stswandering)
- 1245_: [Linux] sensors_temperatures() may fail with IOError "no such file".
- 1255_: [FreeBSD] swap_memory() stats were erroneously represented in KB.
(patch by Denis Krienbühl)

**Backward compatibility**

- 771_: [Windows] cpu_count(logical=False) on Windows XP and Vista is no
longer supported and returns None.

5.4.3

=====

*2018-01-01*

**Enhancements**

- 775_: disk_partitions() on Windows return mount points.

**Bug fixes**

- 1193_: pids() may return False on macOS.

5.4.2

=====

*2017-12-07*

**Enhancements**

- 1173_: introduced PSUTIL_DEBUG environment variable which can be set in order
to print useful debug messages on stderr (useful in case of nasty errors).
- 1177_: added support for sensors_battery() on macOS.  (patch by Arnon Yaari)
- 1183_: Process.children() is 2x faster on UNIX and 2.4x faster on Linux.
- 1188_: deprecated method Process.memory_info_ex() now warns by using
FutureWarning instead of DeprecationWarning.

**Bug fixes**

- 1152_: [Windows] disk_io_counters() may return an empty dict.
- 1169_: [Linux] users() "hostname" returns username instead.  (patch by
janderbrain)
- 1172_: [Windows] `make test` does not work.
- 1179_: [Linux] Process.cmdline() is now able to splits cmdline args for
misbehaving processes which overwrite /proc/pid/cmdline and use spaces
instead of null bytes as args separator.
- 1181_: [macOS] Process.memory_maps() may raise ENOENT.
- 1187_: [macOS] pids() does not return PID 0 on recent macOS versions.

5.4.1

=====

*2017-11-08*

**Enhancements**

- 1164_: [AIX] add support for Process.num_ctx_switches().  (patch by Arnon
Yaari)
- 1053_: abandon Python 3.3 support (psutil still works but it's no longer
tested).

**Bug fixes**

- 1150_: [Windows] when a process is terminate()d now the exit code is set to
SIGTERM instead of 0.  (patch by Akos Kiss)
- 1151_: python -m psutil.tests fail
- 1154_: [AIX] psutil won't compile on AIX 6.1.0.  (patch by Arnon Yaari)
- 1167_: [Windows] net_io_counter() packets count now include also non-unicast
packets.  (patch by Matthew Long)

5.4.0

=====

*2017-10-12*

**Enhancements**

- 1123_: [AIX] added support for AIX platform.  (patch by Arnon Yaari)

**Bug fixes**

- 1009_: [Linux] sensors_temperatures() may crash with IOError.
- 1012_: [Windows] disk_io_counters()'s read_time and write_time were expressed
in tens of micro seconds instead of milliseconds.
- 1127_: [macOS] invalid reference counting in Process.open_files() may lead to
segfault.  (patch by Jakub Bacic)
- 1129_: [Linux] sensors_fans() may crash with IOError.  (patch by Sebastian
Saip)
- 1131_: [SunOS] fix compilation warnings.  (patch by Arnon Yaari)
- 1133_: [Windows] can't compile on newer versions of Visual Studio 2017 15.4.
(patch by Max Bélanger)
- 1138_: [Linux] can't compile on CentOS 5.0 and RedHat 5.0.
(patch by Prodesire)

5.3.1

=====

*2017-09-10*

**Enhancements**

- 1124_: documentation moved to http://psutil.readthedocs.io

**Bug fixes**

- 1105_: [FreeBSD] psutil does not compile on FreeBSD 12.
- 1125_: [BSD] net_connections() raises TypeError.

**Compatibility notes**

- 1120_: .exe files for Windows are no longer uploaded on PyPI as per PEP-527;
only wheels are provided.

5.3.0

=====

*2017-09-01*

**Enhancements**

- 802_: disk_io_counters() and net_io_counters() numbers no longer wrap
(restart from 0). Introduced a new "nowrap" argument.
- 928_: psutil.net_connections() and psutil.Process.connections() "laddr" and
"raddr" are now named tuples.
- 1015_: swap_memory() now relies on /proc/meminfo instead of sysinfo() syscall
so that it can be used in conjunction with PROCFS_PATH in order to retrieve
memory info about Linux containers such as Docker and Heroku.
- 1022_: psutil.users() provides a new "pid" field.
- 1025_: process_iter() accepts two new parameters in order to invoke
Process.as_dict(): "attrs" and "ad_value". With this you can iterate over all
processes in one shot without needing to catch NoSuchProcess and do list/dict
comprehensions.
- 1040_: implemented full unicode support.
- 1051_: disk_usage() on Python 3 is now able to accept bytes.
- 1058_: test suite now enables all warnings by default.
- 1060_: source distribution is dynamically generated so that it only includes
relevant files.
- 1079_: [FreeBSD] net_connections()'s fd number is now being set for real
(instead of -1).  (patch by Gleb Smirnoff)
- 1091_: [SunOS] implemented Process.environ().  (patch by Oleksii Shevchuk)

**Bug fixes**

- 989_: [Windows] boot_time() may return a negative value.
- 1007_: [Windows] boot_time() can have a 1 sec fluctuation between calls; the
value of the first call is now cached so that boot_time() always returns the
same value if fluctuation is <= 1 second.
- 1013_: [FreeBSD] psutil.net_connections() may return incorrect PID.  (patch
by Gleb Smirnoff)
- 1014_: [Linux] Process class can mask legitimate ENOENT exceptions as
NoSuchProcess.
- 1016_: disk_io_counters() raises RuntimeError on a system with no disks.
- 1017_: net_io_counters() raises RuntimeError on a system with no network
cards installed.
- 1021_: [Linux] open_files() may erroneously raise NoSuchProcess instead of
skipping a file which gets deleted while open files are retrieved.
- 1029_: [macOS, FreeBSD] Process.connections('unix') on Python 3 doesn't
properly handle unicode paths and may raise UnicodeDecodeError.
- 1033_: [macOS, FreeBSD] memory leak for net_connections() and
Process.connections() when retrieving UNIX sockets (kind='unix').
- 1040_: fixed many unicode related issues such as UnicodeDecodeError on
Python 3 + UNIX and invalid encoded data on Windows.
- 1042_: [FreeBSD] psutil won't compile on FreeBSD 12.
- 1044_: [macOS] different Process methods incorrectly raise AccessDenied for
zombie processes.
- 1046_: [Windows] disk_partitions() on Windows overrides user's SetErrorMode.
- 1047_: [Windows] Process username(): memory leak in case exception is thrown.
- 1048_: [Windows] users()'s host field report an invalid IP address.
- 1050_: [Windows] Process.memory_maps memory() leaks memory.
- 1055_: cpu_count() is no longer cached; this is useful on systems such as
Linux where CPUs can be disabled at runtime. This also reflects on
Process.cpu_percent() which no longer uses the cache.
- 1058_: fixed Python warnings.
- 1062_: disk_io_counters() and net_io_counters() raise TypeError if no disks
or NICs are installed on the system.
- 1063_: [NetBSD] net_connections() may list incorrect sockets.
- 1064_: [NetBSD] swap_memory() may segfault in case of error.
- 1065_: [OpenBSD] Process.cmdline() may raise SystemError.
- 1067_: [NetBSD] Process.cmdline() leaks memory if process has terminated.
- 1069_: [FreeBSD] Process.cpu_num() may return 255 for certain kernel
processes.
- 1071_: [Linux] cpu_freq() may raise IOError on old RedHat distros.
- 1074_: [FreeBSD] sensors_battery() raises OSError in case of no battery.
- 1075_: [Windows] net_if_addrs(): inet_ntop() return value is not checked.
- 1077_: [SunOS] net_if_addrs() shows garbage addresses on SunOS 5.10.
(patch by Oleksii Shevchuk)
- 1077_: [SunOS] net_connections() does not work on SunOS 5.10. (patch by
Oleksii Shevchuk)
- 1079_: [FreeBSD] net_connections() didn't list locally connected sockets.
(patch by Gleb Smirnoff)
- 1085_: cpu_count() return value is now checked and forced to None if <= 1.
- 1087_: Process.cpu_percent() guard against cpu_count() returning None and
assumes 1 instead.
- 1093_: [SunOS] memory_maps() shows wrong 64 bit addresses.
- 1094_: [Windows] psutil.pid_exists() may lie. Also, all process APIs relying
on OpenProcess Windows API now check whether the PID is actually running.
- 1098_: [Windows] Process.wait() may erroneously return sooner, when the PID
is still alive.
- 1099_: [Windows] Process.terminate() may raise AccessDenied even if the
process already died.
- 1101_: [Linux] sensors_temperatures() may raise ENODEV.

**Porting notes**

- 1039_: returned types consolidation:
- Windows / Process.cpu_times(): fields 3 and 4 were int instead of float
- Linux / FreeBSD: connections('unix'): raddr is now set to "" instead of
 None
- OpenBSD: connections('unix'): laddr and raddr are now set to "" instead of
 None
- 1040_: all strings are encoded by using OS fs encoding.
- 1040_: the following Windows APIs on Python 2 now return a string instead of
unicode:
- Process.memory_maps().path
- WindowsService.bin_path()
- WindowsService.description()
- WindowsService.display_name()
- WindowsService.username()

5.2.2

=====

*2017-04-10*

**Bug fixes**

- 1000_: fixed some setup.py warnings.
- 1002_: [SunOS] remove C macro which will not be available on new Solaris
versions. (patch by Danek Duvall)
- 1004_: [Linux] Process.io_counters() may raise ValueError.
- 1006_: [Linux] cpu_freq() may return None on some Linux versions does not
support the function; now the function is not declared instead.
- 1009_: [Linux] sensors_temperatures() may raise OSError.
- 1010_: [Linux] virtual_memory() may raise ValueError on Ubuntu 14.04.

5.2.1

=====

*2017-03-24*

**Bug fixes**

- 981_: [Linux] cpu_freq() may return an empty list.
- 993_: [Windows] Process.memory_maps() on Python 3 may raise
UnicodeDecodeError.
- 996_: [Linux] sensors_temperatures() may not show all temperatures.
- 997_: [FreeBSD] virtual_memory() may fail due to missing sysctl parameter on
FreeBSD 12.

5.2.0

=====

*2017-03-05*

**Enhancements**

- 971_: [Linux] Add psutil.sensors_fans() function.  (patch by Nicolas Hennion)
- 976_: [Windows] Process.io_counters() has 2 new fields: *other_count* and
*other_bytes*.
- 976_: [Linux] Process.io_counters() has 2 new fields: *read_chars* and
*write_chars*.

**Bug fixes**

- 872_: [Linux] can now compile on Linux by using MUSL C library.
- 985_: [Windows] Fix a crash in `Process.open_files` when the worker thread
for `NtQueryObject` times out.
- 986_: [Linux] Process.cwd() may raise NoSuchProcess instead of ZombieProcess.

5.1.3

=====

**Bug fixes**

- 971_: [Linux] sensors_temperatures() didn't work on CentOS 7.
- 973_: cpu_percent() may raise ZeroDivisionError.

5.1.2

=====

*2017-02-03*

**Bug fixes**

- 966_: [Linux] sensors_battery().power_plugged may erroneously return None on
Python 3.
- 968_: [Linux] disk_io_counters() raises TypeError on python 3.
- 970_: [Linux] sensors_battery()'s name and label fields on Python 3 are bytes
instead of str.

5.1.1

=====

*2017-02-03*

**Enhancements**

- 966_: [Linux] sensors_battery().percent is a float and is more precise.

**Bug fixes**

- 964_: [Windows] Process.username() and psutil.users() may return badly
decoding character on Python 3.
- 965_: [Linux] disk_io_counters() may miscalculate sector size and report the
wrong number of bytes read and written.
- 966_: [Linux] sensors_battery() may fail with "no such file error".
- 966_: [Linux] sensors_battery().power_plugged may lie.

5.1.0

=====

*2017-02-01*

**Enhancements**

- 357_: added psutil.Process.cpu_num() (what CPU a process is on).
- 371_: added psutil.sensors_temperatures() (Linux only).
- 941_: added psutil.cpu_freq() (CPU frequency).
- 955_: added psutil.sensors_battery() (Linux, Windows, only).
- 956_: cpu_affinity([]) can now be used as an alias to set affinity against
all eligible CPUs.

**Bug fixes**

- 687_: [Linux] pid_exists() no longer returns True if passed a process thread
ID.
- 948_: cannot install psutil with PYTHONOPTIMIZE=2.
- 950_: [Windows] Process.cpu_percent() was calculated incorrectly and showed
higher number than real usage.
- 951_: [Windows] the uploaded wheels for Python 3.6 64 bit didn't work.
- 959_: psutil exception objects could not be pickled.
- 960_: Popen.wait() did not return the correct negative exit status if process
is ``kill()``ed by a signal.
- 961_: [Windows] WindowsService.description() may fail with
ERROR_MUI_FILE_NOT_FOUND.

5.0.1

=====

*2016-12-21*

**Enhancements**

- 939_: tar.gz distribution went from 1.8M to 258K.
- 811_: [Windows] provide a more meaningful error message if trying to use
psutil on unsupported Windows XP.

**Bug fixes**

- 609_: [SunOS] psutil does not compile on Solaris 10.
- 936_: [Windows] fix compilation error on VS 2013 (patch by Max Bélanger).
- 940_: [Linux] cpu_percent() and cpu_times_percent() was calculated
incorrectly as "iowait", "guest" and "guest_nice" times were not properly
taken into account.
- 944_: [OpenBSD] psutil.pids() was omitting PID 0.

5.0.0

=====

*2016-11-06*

**Enhncements**

- 799_: new Process.oneshot() context manager making Process methods around
+2x faster in general and from +2x to +6x faster on Windows.
- 943_: better error message in case of version conflict on import.

**Bug fixes**

- 932_: [NetBSD] net_connections() and Process.connections() may fail without
raising an exception.
- 933_: [Windows] memory leak in cpu_stats() and WindowsService.description().

4.4.2

=====

*2016-10-26*

**Bug fixes**

- 931_: psutil no longer compiles on Solaris.

4.4.1

=====

*2016-10-25*

**Bug fixes**

- 927_: ``Popen.__del__`` may cause maximum recursion depth error.

4.4.0

=====

*2016-10-23*

**Enhancements**

- 874_: [Windows] net_if_addrs() returns also the netmask.
- 887_: [Linux] virtual_memory()'s 'available' and 'used' values are more
precise and match "free" cmdline utility.  "available" also takes into
account LCX containers preventing "available" to overflow "total".
- 891_: procinfo.py script has been updated and provides a lot more info.

**Bug fixes**

- 514_: [macOS] possibly fix Process.memory_maps() segfault (critical!).
- 783_: [macOS] Process.status() may erroneously return "running" for zombie
processes.
- 798_: [Windows] Process.open_files() returns and empty list on Windows 10.
- 825_: [Linux] cpu_affinity; fix possible double close and use of unopened
socket.
- 880_: [Windows] Handle race condition inside psutil_net_connections.
- 885_: ValueError is raised if a negative integer is passed to cpu_percent()
functions.
- 892_: [Linux] Process.cpu_affinity([-1]) raise SystemError with no error
set; now ValueError is raised.
- 906_: [BSD] disk_partitions(all=False) returned an empty list. Now the
argument is ignored and all partitions are always returned.
- 907_: [FreeBSD] Process.exe() may fail with OSError(ENOENT).
- 908_: [macOS, BSD] different process methods could errounesuly mask the real
error for high-privileged PIDs and raise NoSuchProcess and AccessDenied
instead of OSError and RuntimeError.
- 909_: [macOS] Process open_files() and connections() methods may raise
OSError with no exception set if process is gone.
- 916_: [macOS] fix many compilation warnings.

4.3.1

=====

*2016-09-01*

**Enhancements**

- 881_: "make install" now works also when using a virtual env.

**Bug fixes**

- 854_: Process.as_dict() raises ValueError if passed an erroneous attrs name.
- 857_: [SunOS] Process cpu_times(), cpu_percent(), threads() amd memory_maps()
may raise RuntimeError if attempting to query a 64bit process with a 32bit
python. "Null" values are returned as a fallback.
- 858_: Process.as_dict() should not return memory_info_ex() because it's
deprecated.
- 863_: [Windows] memory_map truncates addresses above 32 bits
- 866_: [Windows] win_service_iter() and services in general are not able to
handle unicode service names / descriptions.
- 869_: [Windows] Process.wait() may raise TimeoutExpired with wrong timeout
unit (ms instead of sec).
- 870_: [Windows] Handle leak inside psutil_get_process_data.

4.3.0

=====

*2016-06-18*

**Enhancements**

- 819_: [Linux] different speedup improvements:
Process.ppid() is 20% faster
Process.status() is 28% faster
Process.name() is 25% faster
Process.num_threads is 20% faster on Python 3

**Bug fixes**

- 810_: [Windows] Windows wheels are incompatible with pip 7.1.2.
- 812_: [NetBSD] fix compilation on NetBSD-5.x.
- 823_: [NetBSD] virtual_memory() raises TypeError on Python 3.
- 829_: [UNIX] psutil.disk_usage() percent field takes root reserved space
into account.
- 816_: [Windows] fixed net_io_counter() values wrapping after 4.3GB in
Windows Vista (NT 6.0) and above using 64bit values from newer win APIs.

4.2.0

=====

*2016-05-14*

**Enhancements**

- 795_: [Windows] new APIs to deal with Windows services: win_service_iter()
and win_service_get().
- 800_: [Linux] psutil.virtual_memory() returns a new "shared" memory field.
- 819_: [Linux] speedup /proc parsing:
- Process.ppid() is 20% faster
- Process.status() is 28% faster
- Process.name() is 25% faster
- Process.num_threads is 20% faster on Python 3

**Bug fixes**

- 797_: [Linux] net_if_stats() may raise OSError for certain NIC cards.
- 813_: Process.as_dict() should ignore extraneous attribute names which gets
attached to the Process instance.

4.1.0

=====

*2016-03-12*

**Enhancements**

- 777_: [Linux] Process.open_files() on Linux return 3 new fields: position,
mode and flags.
- 779_: Process.cpu_times() returns two new fields, 'children_user' and
'children_system' (always set to 0 on macOS and Windows).
- 789_: [Windows] psutil.cpu_times() return two new fields: "interrupt" and
"dpc". Same for psutil.cpu_times_percent().
- 792_: new psutil.cpu_stats() function returning number of CPU ctx switches
interrupts, soft interrupts and syscalls.

**Bug fixes**

- 774_: [FreeBSD] net_io_counters() dropout is no longer set to 0 if the kernel
provides it.
- 776_: [Linux] Process.cpu_affinity() may erroneously raise NoSuchProcess.
(patch by wxwright)
- 780_: [macOS] psutil does not compile with some gcc versions.
- 786_: net_if_addrs() may report incomplete MAC addresses.
- 788_: [NetBSD] virtual_memory()'s buffers and shared values were set to 0.
- 790_: [macOS] psutil won't compile on macOS 10.4.

4.0.0

=====

*2016-02-17*

**Enhancements**

- 523_: [Linux, FreeBSD] disk_io_counters() return a new "busy_time" field.
- 660_: [Windows] make.bat is smarter in finding alternative VS install
locations.  (patch by mpderbec)
- 732_: Process.environ().  (patch by Frank Benkstein)
- 753_: [Linux, macOS, Windows] Process USS and PSS (Linux) "real" memory stats.
(patch by Eric Rahm)
- 755_: Process.memory_percent() "memtype" parameter.
- 758_: tests now live in psutil namespace.
- 760_: expose OS constants (psutil.LINUX, psutil.macOS, etc.)
- 756_: [Linux] disk_io_counters() return 2 new fields: read_merged_count and
write_merged_count.
- 762_: new scripts/procsmem.py script.

**Bug fixes**

- 685_: [Linux] virtual_memory() provides wrong results on systems with a lot
of physical memory.
- 704_: [Solaris] psutil does not compile on Solaris sparc.
- 734_: on Python 3 invalid UTF-8 data is not correctly handled for process
name(), cwd(), exe(), cmdline() and open_files() methods resulting in
UnicodeDecodeError exceptions. 'surrogateescape' error handler is now
used as a workaround for replacing the corrupted data.
- 737_: [Windows] when the bitness of psutil and the target process was
different cmdline() and cwd() could return a wrong result or incorrectly
report an AccessDenied error.
- 741_: [OpenBSD] psutil does not compile on mips64.
- 751_: [Linux] fixed call to Py_DECREF on possible Null object.
- 754_: [Linux] cmdline() can be wrong in case of zombie process.
- 759_: [Linux] Process.memory_maps() may return paths ending with " (deleted)"
- 761_: [Windows] psutil.boot_time() wraps to 0 after 49 days.
- 764_: [NetBSD] fix compilation on NetBSD-6.x.
- 766_: [Linux] net_connections() can't handle malformed /proc/net/unix file.
- 767_: [Linux] disk_io_counters() may raise ValueError on 2.6 kernels and it's
broken on 2.4 kernels.
- 770_: [NetBSD] disk_io_counters() metrics didn't update.

3.4.2

=====

*2016-01-20*

**Enhancements**

- 728_: [Solaris] exposed psutil.PROCFS_PATH constant to change the default
location of /proc filesystem.

**Bug fixes**

- 724_: [FreeBSD] psutil.virtual_memory().total is incorrect.
- 730_: [FreeBSD] psutil.virtual_memory() crashes.

3.4.1

=====

*2016-01-15*

**Enhancements**

- 557_: [NetBSD] added NetBSD support.  (contributed by Ryo Onodera and
Thomas Klausner)
- 708_: [Linux] psutil.net_connections() and Process.connections() on Python 2
can be up to 3x faster in case of many connections.
Also psutil.Process.memory_maps() is slightly faster.
- 718_: process_iter() is now thread safe.

**Bug fixes**

- 714_: [OpenBSD] virtual_memory().cached value was always set to 0.
- 715_: don't crash at import time if cpu_times() fail for some reason.
- 717_: [Linux] Process.open_files fails if deleted files still visible.
- 722_: [Linux] swap_memory() no longer crashes if sin/sout can't be determined
due to missing /proc/vmstat.
- 724_: [FreeBSD] virtual_memory().total is slightly incorrect.

3.3.0

=====

*2015-11-25*

**Enhancements**

- 558_: [Linux] exposed psutil.PROCFS_PATH constant to change the default
location of /proc filesystem.
- 615_: [OpenBSD] added OpenBSD support.  (contributed by Landry Breuil)

**Bug fixes**

- 692_: [UNIX] Process.name() is no longer cached as it may change.

3.2.2

=====

*2015-10-04*

**Bug fixes**

- 517_: [SunOS] net_io_counters failed to detect network interfaces
correctly on Solaris 10
- 541_: [FreeBSD] disk_io_counters r/w times were expressed in seconds instead
of milliseconds.  (patch by dasumin)
- 610_: [SunOS] fix build and tests on Solaris 10
- 623_: [Linux] process or system connections raises ValueError if IPv6 is not
supported by the system.
- 678_: [Linux] can't install psutil due to bug in setup.py.
- 688_: [Windows] compilation fails with MSVC 2015, Python 3.5. (patch by
Mike Sarahan)

3.2.1

=====

*2015-09-03*

**Bug fixes**

- 677_: [Linux] can't install psutil due to bug in setup.py.

3.2.0

=====

*2015-09-02*

**Enhancements**

- 644_: [Windows] added support for CTRL_C_EVENT and CTRL_BREAK_EVENT signals
to use with Process.send_signal().
- 648_: CI test integration for macOS. (patch by Jeff Tang)
- 663_: [UNIX] net_if_addrs() now returns point-to-point (VPNs) addresses.
- 655_: [Windows] different issues regarding unicode handling were fixed. On
Python 2 all APIs returning a string will now return an encoded version of it
by using sys.getfilesystemencoding() codec. The APIs involved are:
- psutil.net_if_addrs()
- psutil.net_if_stats()
- psutil.net_io_counters()
- psutil.Process.cmdline()
- psutil.Process.name()
- psutil.Process.username()
- psutil.users()

**Bug fixes**

- 513_: [Linux] fixed integer overflow for RLIM_INFINITY.
- 641_: [Windows] fixed many compilation warnings.  (patch by Jeff Tang)
- 652_: [Windows] net_if_addrs() UnicodeDecodeError in case of non-ASCII NIC
names.
- 655_: [Windows] net_if_stats() UnicodeDecodeError in case of non-ASCII NIC
names.
- 659_: [Linux] compilation error on Suse 10. (patch by maozguttman)
- 664_: [Linux] compilation error on Alpine Linux. (patch by Bart van Kleef)
- 670_: [Windows] segfgault of net_if_addrs() in case of non-ASCII NIC names.
(patch by sk6249)
- 672_: [Windows] compilation fails if using Windows SDK v8.0. (patch by
Steven Winfield)
- 675_: [Linux] net_connections(); UnicodeDecodeError may occur when listing
UNIX sockets.

3.1.1

=====

*2015-07-15*

**Bug fixes**

- 603_: [Linux] ionice_set value range is incorrect.  (patch by spacewander)
- 645_: [Linux] psutil.cpu_times_percent() may produce negative results.
- 656_: 'from psutil import *' does not work.

3.1.0

=====

*2015-07-15*

**Enhancements**

- 534_: [Linux] disk_partitions() added support for ZFS filesystems.
- 646_: continuous tests integration for Windows with
https://ci.appveyor.com/project/giampaolo/psutil.
- 647_: new dev guide:
https://github.com/giampaolo/psutil/blob/master/docs/DEVGUIDE.rst
- 651_: continuous code quality test integration with scrutinizer-ci.com

**Bug fixes**

- 340_: [Windows] Process.open_files() no longer hangs. Instead it uses a
thred which times out and skips the file handle in case it's taking too long
to be retrieved.  (patch by Jeff Tang, PR 597)
- 627_: [Windows] Process.name() no longer raises AccessDenied for pids owned
by another user.
- 636_: [Windows] Process.memory_info() raise AccessDenied.
- 637_: [UNIX] raise exception if trying to send signal to Process PID 0 as it
will affect os.getpid()'s process group instead of PID 0.
- 639_: [Linux] Process.cmdline() can be truncated.
- 640_: [Linux] *connections functions may swallow errors and return an
incomplete list of connnections.
- 642_: repr() of exceptions is incorrect.
- 653_: [Windows] Add inet_ntop function for Windows XP to support IPv6.
- 641_: [Windows] Replace deprecated string functions with safe equivalents.

3.0.1

=====

*2015-06-18*

**Bug fixes**

- 632_: [Linux] better error message if cannot parse process UNIX connections.
- 634_: [Linux] Proces.cmdline() does not include empty string arguments.
- 635_: [UNIX] crash on module import if 'enum' package is installed on python
< 3.4.

3.0.0

=====

*2015-06-13*

**Enhancements**

- 250_: new psutil.net_if_stats() returning NIC statistics (isup, duplex,
speed, MTU).
- 376_: new psutil.net_if_addrs() returning all NIC addresses a-la ifconfig.
- 469_: on Python >= 3.4 ``IOPRIO_CLASS_*`` and ``*_PRIORITY_CLASS`` constants
returned by psutil.Process' ionice() and nice() methods are enums instead of
plain integers.
- 581_: add .gitignore. (patch by Gabi Davar)
- 582_: connection constants returned by psutil.net_connections() and
psutil.Process.connections() were turned from int to enums on Python > 3.4.
- 587_: Move native extension into the package.
- 589_: Process.cpu_affinity() accepts any kind of iterable (set, tuple, ...),
not only lists.
- 594_: all deprecated APIs were removed.
- 599_: [Windows] process name() can now be determined for all processes even
when running as a limited user.
- 602_: pre-commit GIT hook.
- 629_: enhanced support for py.test and nose test discovery and tests run.
- 616_: [Windows] Add inet_ntop function for Windows XP.

**Bug fixes**

- 428_: [all UNIXes except Linux] correct handling of zombie processes;
introduced new ZombieProcess exception class.
- 512_: [BSD] fix segfault in net_connections().
- 555_: [Linux] psutil.users() correctly handles ":0" as an alias for
"localhost"
- 579_: [Windows] Fixed open_files() for PID>64K.
- 579_: [Windows] fixed many compiler warnings.
- 585_: [FreeBSD] net_connections() may raise KeyError.
- 586_: [FreeBSD] cpu_affinity() segfaults on set in case an invalid CPU
number is provided.
- 593_: [FreeBSD] Process().memory_maps() segfaults.
- 606_: Process.parent() may swallow NoSuchProcess exceptions.
- 611_: [SunOS] net_io_counters has send and received swapped
- 614_: [Linux]: cpu_count(logical=False) return the number of physical CPUs
instead of physical cores.
- 618_: [SunOS] swap tests fail on Solaris when run as normal user
- 628_: [Linux] Process.name() truncates process name in case it contains
spaces or parentheses.

Links

• PyPI: https://pypi.org/project/psutil
• Changelog: https://pyup.io/changelogs/psutil/
• Repo: https://github.com/giampaolo/psutil