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544 lines
16 KiB
Python
544 lines
16 KiB
Python
# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""macOS platform implementation."""
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import errno
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import functools
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import os
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from collections import namedtuple
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from . import _common
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from . import _psposix
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from . import _psutil_osx as cext
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from . import _psutil_posix as cext_posix
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from ._common import AccessDenied
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from ._common import NoSuchProcess
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from ._common import ZombieProcess
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from ._common import conn_tmap
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from ._common import conn_to_ntuple
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from ._common import isfile_strict
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from ._common import memoize_when_activated
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from ._common import parse_environ_block
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from ._common import usage_percent
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from ._compat import PermissionError
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from ._compat import ProcessLookupError
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__extra__all__ = []
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# =====================================================================
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# --- globals
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# =====================================================================
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PAGESIZE = cext_posix.getpagesize()
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AF_LINK = cext_posix.AF_LINK
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TCP_STATUSES = {
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cext.TCPS_ESTABLISHED: _common.CONN_ESTABLISHED,
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cext.TCPS_SYN_SENT: _common.CONN_SYN_SENT,
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cext.TCPS_SYN_RECEIVED: _common.CONN_SYN_RECV,
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cext.TCPS_FIN_WAIT_1: _common.CONN_FIN_WAIT1,
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cext.TCPS_FIN_WAIT_2: _common.CONN_FIN_WAIT2,
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cext.TCPS_TIME_WAIT: _common.CONN_TIME_WAIT,
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cext.TCPS_CLOSED: _common.CONN_CLOSE,
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cext.TCPS_CLOSE_WAIT: _common.CONN_CLOSE_WAIT,
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cext.TCPS_LAST_ACK: _common.CONN_LAST_ACK,
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cext.TCPS_LISTEN: _common.CONN_LISTEN,
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cext.TCPS_CLOSING: _common.CONN_CLOSING,
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cext.PSUTIL_CONN_NONE: _common.CONN_NONE,
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}
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PROC_STATUSES = {
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cext.SIDL: _common.STATUS_IDLE,
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cext.SRUN: _common.STATUS_RUNNING,
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cext.SSLEEP: _common.STATUS_SLEEPING,
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cext.SSTOP: _common.STATUS_STOPPED,
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cext.SZOMB: _common.STATUS_ZOMBIE,
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}
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kinfo_proc_map = dict(
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ppid=0,
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ruid=1,
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euid=2,
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suid=3,
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rgid=4,
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egid=5,
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sgid=6,
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ttynr=7,
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ctime=8,
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status=9,
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name=10,
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)
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pidtaskinfo_map = dict(
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cpuutime=0,
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cpustime=1,
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rss=2,
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vms=3,
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pfaults=4,
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pageins=5,
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numthreads=6,
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volctxsw=7,
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)
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# =====================================================================
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# --- named tuples
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# =====================================================================
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# psutil.cpu_times()
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scputimes = namedtuple('scputimes', ['user', 'nice', 'system', 'idle'])
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# psutil.virtual_memory()
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svmem = namedtuple(
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'svmem', ['total', 'available', 'percent', 'used', 'free',
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'active', 'inactive', 'wired'])
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# psutil.Process.memory_info()
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pmem = namedtuple('pmem', ['rss', 'vms', 'pfaults', 'pageins'])
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# psutil.Process.memory_full_info()
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pfullmem = namedtuple('pfullmem', pmem._fields + ('uss', ))
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# =====================================================================
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# --- memory
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# =====================================================================
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def virtual_memory():
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"""System virtual memory as a namedtuple."""
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total, active, inactive, wired, free, speculative = cext.virtual_mem()
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# This is how Zabbix calculate avail and used mem:
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# https://github.com/zabbix/zabbix/blob/trunk/src/libs/zbxsysinfo/
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# osx/memory.c
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# Also see: https://github.com/giampaolo/psutil/issues/1277
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avail = inactive + free
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used = active + wired
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# This is NOT how Zabbix calculates free mem but it matches "free"
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# cmdline utility.
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free -= speculative
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percent = usage_percent((total - avail), total, round_=1)
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return svmem(total, avail, percent, used, free,
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active, inactive, wired)
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def swap_memory():
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"""Swap system memory as a (total, used, free, sin, sout) tuple."""
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total, used, free, sin, sout = cext.swap_mem()
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percent = usage_percent(used, total, round_=1)
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return _common.sswap(total, used, free, percent, sin, sout)
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# =====================================================================
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# --- CPU
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# =====================================================================
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def cpu_times():
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"""Return system CPU times as a namedtuple."""
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user, nice, system, idle = cext.cpu_times()
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return scputimes(user, nice, system, idle)
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def per_cpu_times():
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"""Return system CPU times as a named tuple"""
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ret = []
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for cpu_t in cext.per_cpu_times():
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user, nice, system, idle = cpu_t
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item = scputimes(user, nice, system, idle)
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ret.append(item)
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return ret
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def cpu_count_logical():
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"""Return the number of logical CPUs in the system."""
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return cext.cpu_count_logical()
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def cpu_count_cores():
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"""Return the number of CPU cores in the system."""
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return cext.cpu_count_cores()
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def cpu_stats():
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ctx_switches, interrupts, soft_interrupts, syscalls, traps = \
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cext.cpu_stats()
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return _common.scpustats(
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ctx_switches, interrupts, soft_interrupts, syscalls)
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def cpu_freq():
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"""Return CPU frequency.
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On macOS per-cpu frequency is not supported.
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Also, the returned frequency never changes, see:
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https://arstechnica.com/civis/viewtopic.php?f=19&t=465002
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"""
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curr, min_, max_ = cext.cpu_freq()
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return [_common.scpufreq(curr, min_, max_)]
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# =====================================================================
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# --- disks
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# =====================================================================
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disk_usage = _psposix.disk_usage
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disk_io_counters = cext.disk_io_counters
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def disk_partitions(all=False):
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"""Return mounted disk partitions as a list of namedtuples."""
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retlist = []
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partitions = cext.disk_partitions()
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for partition in partitions:
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device, mountpoint, fstype, opts = partition
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if device == 'none':
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device = ''
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if not all:
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if not os.path.isabs(device) or not os.path.exists(device):
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continue
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maxfile = maxpath = None # set later
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ntuple = _common.sdiskpart(device, mountpoint, fstype, opts,
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maxfile, maxpath)
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retlist.append(ntuple)
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return retlist
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# =====================================================================
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# --- sensors
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# =====================================================================
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def sensors_battery():
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"""Return battery information."""
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try:
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percent, minsleft, power_plugged = cext.sensors_battery()
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except NotImplementedError:
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# no power source - return None according to interface
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return None
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power_plugged = power_plugged == 1
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if power_plugged:
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secsleft = _common.POWER_TIME_UNLIMITED
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elif minsleft == -1:
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secsleft = _common.POWER_TIME_UNKNOWN
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else:
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secsleft = minsleft * 60
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return _common.sbattery(percent, secsleft, power_plugged)
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# =====================================================================
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# --- network
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# =====================================================================
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net_io_counters = cext.net_io_counters
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net_if_addrs = cext_posix.net_if_addrs
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def net_connections(kind='inet'):
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"""System-wide network connections."""
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# Note: on macOS this will fail with AccessDenied unless
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# the process is owned by root.
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ret = []
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for pid in pids():
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try:
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cons = Process(pid).connections(kind)
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except NoSuchProcess:
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continue
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else:
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if cons:
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for c in cons:
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c = list(c) + [pid]
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ret.append(_common.sconn(*c))
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return ret
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def net_if_stats():
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"""Get NIC stats (isup, duplex, speed, mtu)."""
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names = net_io_counters().keys()
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ret = {}
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for name in names:
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try:
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mtu = cext_posix.net_if_mtu(name)
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flags = cext_posix.net_if_flags(name)
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duplex, speed = cext_posix.net_if_duplex_speed(name)
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except OSError as err:
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# https://github.com/giampaolo/psutil/issues/1279
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if err.errno != errno.ENODEV:
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raise
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else:
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if hasattr(_common, 'NicDuplex'):
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duplex = _common.NicDuplex(duplex)
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output_flags = ','.join(flags)
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isup = 'running' in flags
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ret[name] = _common.snicstats(isup, duplex, speed, mtu,
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output_flags)
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return ret
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# =====================================================================
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# --- other system functions
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# =====================================================================
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def boot_time():
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"""The system boot time expressed in seconds since the epoch."""
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return cext.boot_time()
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def users():
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"""Return currently connected users as a list of namedtuples."""
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retlist = []
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rawlist = cext.users()
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for item in rawlist:
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user, tty, hostname, tstamp, pid = item
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if tty == '~':
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continue # reboot or shutdown
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if not tstamp:
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continue
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nt = _common.suser(user, tty or None, hostname or None, tstamp, pid)
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retlist.append(nt)
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return retlist
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# =====================================================================
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# --- processes
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# =====================================================================
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def pids():
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ls = cext.pids()
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if 0 not in ls:
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# On certain macOS versions pids() C doesn't return PID 0 but
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# "ps" does and the process is querable via sysctl():
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# https://travis-ci.org/giampaolo/psutil/jobs/309619941
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try:
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Process(0).create_time()
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ls.insert(0, 0)
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except NoSuchProcess:
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pass
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except AccessDenied:
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ls.insert(0, 0)
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return ls
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pid_exists = _psposix.pid_exists
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def is_zombie(pid):
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try:
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st = cext.proc_kinfo_oneshot(pid)[kinfo_proc_map['status']]
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return st == cext.SZOMB
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except Exception:
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return False
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def wrap_exceptions(fun):
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"""Decorator which translates bare OSError exceptions into
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NoSuchProcess and AccessDenied.
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"""
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@functools.wraps(fun)
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def wrapper(self, *args, **kwargs):
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try:
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return fun(self, *args, **kwargs)
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except ProcessLookupError:
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if is_zombie(self.pid):
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raise ZombieProcess(self.pid, self._name, self._ppid)
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else:
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raise NoSuchProcess(self.pid, self._name)
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except PermissionError:
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raise AccessDenied(self.pid, self._name)
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except cext.ZombieProcessError:
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raise ZombieProcess(self.pid, self._name, self._ppid)
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return wrapper
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class Process(object):
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"""Wrapper class around underlying C implementation."""
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__slots__ = ["pid", "_name", "_ppid", "_cache"]
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def __init__(self, pid):
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self.pid = pid
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self._name = None
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self._ppid = None
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@wrap_exceptions
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@memoize_when_activated
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def _get_kinfo_proc(self):
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# Note: should work with all PIDs without permission issues.
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ret = cext.proc_kinfo_oneshot(self.pid)
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assert len(ret) == len(kinfo_proc_map)
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return ret
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@wrap_exceptions
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@memoize_when_activated
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def _get_pidtaskinfo(self):
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# Note: should work for PIDs owned by user only.
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ret = cext.proc_pidtaskinfo_oneshot(self.pid)
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assert len(ret) == len(pidtaskinfo_map)
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return ret
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def oneshot_enter(self):
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self._get_kinfo_proc.cache_activate(self)
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self._get_pidtaskinfo.cache_activate(self)
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def oneshot_exit(self):
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self._get_kinfo_proc.cache_deactivate(self)
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self._get_pidtaskinfo.cache_deactivate(self)
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@wrap_exceptions
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def name(self):
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name = self._get_kinfo_proc()[kinfo_proc_map['name']]
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return name if name is not None else cext.proc_name(self.pid)
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@wrap_exceptions
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def exe(self):
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return cext.proc_exe(self.pid)
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@wrap_exceptions
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def cmdline(self):
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return cext.proc_cmdline(self.pid)
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@wrap_exceptions
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def environ(self):
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return parse_environ_block(cext.proc_environ(self.pid))
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@wrap_exceptions
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def ppid(self):
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self._ppid = self._get_kinfo_proc()[kinfo_proc_map['ppid']]
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return self._ppid
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@wrap_exceptions
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def cwd(self):
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return cext.proc_cwd(self.pid)
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@wrap_exceptions
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def uids(self):
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rawtuple = self._get_kinfo_proc()
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return _common.puids(
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rawtuple[kinfo_proc_map['ruid']],
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rawtuple[kinfo_proc_map['euid']],
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rawtuple[kinfo_proc_map['suid']])
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@wrap_exceptions
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def gids(self):
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rawtuple = self._get_kinfo_proc()
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return _common.puids(
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rawtuple[kinfo_proc_map['rgid']],
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rawtuple[kinfo_proc_map['egid']],
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rawtuple[kinfo_proc_map['sgid']])
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@wrap_exceptions
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def terminal(self):
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tty_nr = self._get_kinfo_proc()[kinfo_proc_map['ttynr']]
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tmap = _psposix.get_terminal_map()
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try:
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return tmap[tty_nr]
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except KeyError:
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return None
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@wrap_exceptions
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def memory_info(self):
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rawtuple = self._get_pidtaskinfo()
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return pmem(
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rawtuple[pidtaskinfo_map['rss']],
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rawtuple[pidtaskinfo_map['vms']],
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rawtuple[pidtaskinfo_map['pfaults']],
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rawtuple[pidtaskinfo_map['pageins']],
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)
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@wrap_exceptions
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def memory_full_info(self):
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basic_mem = self.memory_info()
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uss = cext.proc_memory_uss(self.pid)
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return pfullmem(*basic_mem + (uss, ))
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@wrap_exceptions
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def cpu_times(self):
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rawtuple = self._get_pidtaskinfo()
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return _common.pcputimes(
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rawtuple[pidtaskinfo_map['cpuutime']],
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rawtuple[pidtaskinfo_map['cpustime']],
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# children user / system times are not retrievable (set to 0)
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0.0, 0.0)
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@wrap_exceptions
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def create_time(self):
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return self._get_kinfo_proc()[kinfo_proc_map['ctime']]
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@wrap_exceptions
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def num_ctx_switches(self):
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# Unvoluntary value seems not to be available;
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# getrusage() numbers seems to confirm this theory.
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# We set it to 0.
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vol = self._get_pidtaskinfo()[pidtaskinfo_map['volctxsw']]
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return _common.pctxsw(vol, 0)
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@wrap_exceptions
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def num_threads(self):
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return self._get_pidtaskinfo()[pidtaskinfo_map['numthreads']]
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@wrap_exceptions
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def open_files(self):
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if self.pid == 0:
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return []
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files = []
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rawlist = cext.proc_open_files(self.pid)
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for path, fd in rawlist:
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if isfile_strict(path):
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ntuple = _common.popenfile(path, fd)
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files.append(ntuple)
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return files
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@wrap_exceptions
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def connections(self, kind='inet'):
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if kind not in conn_tmap:
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raise ValueError("invalid %r kind argument; choose between %s"
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% (kind, ', '.join([repr(x) for x in conn_tmap])))
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families, types = conn_tmap[kind]
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rawlist = cext.proc_connections(self.pid, families, types)
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ret = []
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for item in rawlist:
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fd, fam, type, laddr, raddr, status = item
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nt = conn_to_ntuple(fd, fam, type, laddr, raddr, status,
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TCP_STATUSES)
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ret.append(nt)
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return ret
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@wrap_exceptions
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def num_fds(self):
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if self.pid == 0:
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return 0
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return cext.proc_num_fds(self.pid)
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@wrap_exceptions
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def wait(self, timeout=None):
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return _psposix.wait_pid(self.pid, timeout, self._name)
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@wrap_exceptions
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def nice_get(self):
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return cext_posix.getpriority(self.pid)
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@wrap_exceptions
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def nice_set(self, value):
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return cext_posix.setpriority(self.pid, value)
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@wrap_exceptions
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def status(self):
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code = self._get_kinfo_proc()[kinfo_proc_map['status']]
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# XXX is '?' legit? (we're not supposed to return it anyway)
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return PROC_STATUSES.get(code, '?')
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@wrap_exceptions
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def threads(self):
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rawlist = cext.proc_threads(self.pid)
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retlist = []
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for thread_id, utime, stime in rawlist:
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ntuple = _common.pthread(thread_id, utime, stime)
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retlist.append(ntuple)
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return retlist
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