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annotate planemo/lib/python3.7/site-packages/psutil/_psosx.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 # Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
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2 # Use of this source code is governed by a BSD-style license that can be
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3 # found in the LICENSE file.
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4
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5 """macOS platform implementation."""
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6
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7 import contextlib
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8 import errno
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9 import functools
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10 import os
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11 from collections import namedtuple
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12
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13 from . import _common
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14 from . import _psposix
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15 from . import _psutil_osx as cext
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16 from . import _psutil_posix as cext_posix
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17 from ._common import AccessDenied
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18 from ._common import conn_tmap
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19 from ._common import conn_to_ntuple
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20 from ._common import isfile_strict
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21 from ._common import memoize_when_activated
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22 from ._common import NoSuchProcess
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23 from ._common import parse_environ_block
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24 from ._common import usage_percent
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25 from ._common import ZombieProcess
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26 from ._compat import PermissionError
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27 from ._compat import ProcessLookupError
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28
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29
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30 __extra__all__ = []
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31
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32
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33 # =====================================================================
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34 # --- globals
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35 # =====================================================================
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36
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37
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38 PAGESIZE = os.sysconf("SC_PAGE_SIZE")
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39 AF_LINK = cext_posix.AF_LINK
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40
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41 TCP_STATUSES = {
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42 cext.TCPS_ESTABLISHED: _common.CONN_ESTABLISHED,
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43 cext.TCPS_SYN_SENT: _common.CONN_SYN_SENT,
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44 cext.TCPS_SYN_RECEIVED: _common.CONN_SYN_RECV,
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45 cext.TCPS_FIN_WAIT_1: _common.CONN_FIN_WAIT1,
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46 cext.TCPS_FIN_WAIT_2: _common.CONN_FIN_WAIT2,
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47 cext.TCPS_TIME_WAIT: _common.CONN_TIME_WAIT,
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48 cext.TCPS_CLOSED: _common.CONN_CLOSE,
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49 cext.TCPS_CLOSE_WAIT: _common.CONN_CLOSE_WAIT,
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50 cext.TCPS_LAST_ACK: _common.CONN_LAST_ACK,
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51 cext.TCPS_LISTEN: _common.CONN_LISTEN,
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52 cext.TCPS_CLOSING: _common.CONN_CLOSING,
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53 cext.PSUTIL_CONN_NONE: _common.CONN_NONE,
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54 }
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55
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56 PROC_STATUSES = {
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57 cext.SIDL: _common.STATUS_IDLE,
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58 cext.SRUN: _common.STATUS_RUNNING,
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59 cext.SSLEEP: _common.STATUS_SLEEPING,
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60 cext.SSTOP: _common.STATUS_STOPPED,
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61 cext.SZOMB: _common.STATUS_ZOMBIE,
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62 }
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63
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64 kinfo_proc_map = dict(
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65 ppid=0,
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66 ruid=1,
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67 euid=2,
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68 suid=3,
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69 rgid=4,
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70 egid=5,
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71 sgid=6,
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72 ttynr=7,
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73 ctime=8,
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74 status=9,
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75 name=10,
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76 )
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77
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78 pidtaskinfo_map = dict(
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79 cpuutime=0,
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80 cpustime=1,
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81 rss=2,
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82 vms=3,
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83 pfaults=4,
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84 pageins=5,
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85 numthreads=6,
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86 volctxsw=7,
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87 )
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88
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89
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90 # =====================================================================
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91 # --- named tuples
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92 # =====================================================================
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93
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94
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95 # psutil.cpu_times()
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96 scputimes = namedtuple('scputimes', ['user', 'nice', 'system', 'idle'])
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97 # psutil.virtual_memory()
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98 svmem = namedtuple(
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99 'svmem', ['total', 'available', 'percent', 'used', 'free',
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100 'active', 'inactive', 'wired'])
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101 # psutil.Process.memory_info()
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102 pmem = namedtuple('pmem', ['rss', 'vms', 'pfaults', 'pageins'])
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103 # psutil.Process.memory_full_info()
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104 pfullmem = namedtuple('pfullmem', pmem._fields + ('uss', ))
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105
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106
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107 # =====================================================================
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108 # --- memory
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109 # =====================================================================
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110
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111
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112 def virtual_memory():
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113 """System virtual memory as a namedtuple."""
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114 total, active, inactive, wired, free, speculative = cext.virtual_mem()
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115 # This is how Zabbix calculate avail and used mem:
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116 # https://github.com/zabbix/zabbix/blob/trunk/src/libs/zbxsysinfo/
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117 # osx/memory.c
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118 # Also see: https://github.com/giampaolo/psutil/issues/1277
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119 avail = inactive + free
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120 used = active + wired
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121 # This is NOT how Zabbix calculates free mem but it matches "free"
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122 # cmdline utility.
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123 free -= speculative
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124 percent = usage_percent((total - avail), total, round_=1)
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125 return svmem(total, avail, percent, used, free,
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126 active, inactive, wired)
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127
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128
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129 def swap_memory():
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130 """Swap system memory as a (total, used, free, sin, sout) tuple."""
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131 total, used, free, sin, sout = cext.swap_mem()
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132 percent = usage_percent(used, total, round_=1)
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133 return _common.sswap(total, used, free, percent, sin, sout)
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134
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135
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136 # =====================================================================
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137 # --- CPU
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138 # =====================================================================
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139
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140
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141 def cpu_times():
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142 """Return system CPU times as a namedtuple."""
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143 user, nice, system, idle = cext.cpu_times()
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144 return scputimes(user, nice, system, idle)
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145
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146
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147 def per_cpu_times():
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148 """Return system CPU times as a named tuple"""
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149 ret = []
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150 for cpu_t in cext.per_cpu_times():
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151 user, nice, system, idle = cpu_t
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152 item = scputimes(user, nice, system, idle)
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153 ret.append(item)
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154 return ret
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155
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156
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157 def cpu_count_logical():
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158 """Return the number of logical CPUs in the system."""
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159 return cext.cpu_count_logical()
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160
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161
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162 def cpu_count_physical():
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163 """Return the number of physical CPUs in the system."""
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164 return cext.cpu_count_phys()
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165
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166
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167 def cpu_stats():
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168 ctx_switches, interrupts, soft_interrupts, syscalls, traps = \
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169 cext.cpu_stats()
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170 return _common.scpustats(
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171 ctx_switches, interrupts, soft_interrupts, syscalls)
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172
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173
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174 def cpu_freq():
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175 """Return CPU frequency.
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176 On macOS per-cpu frequency is not supported.
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177 Also, the returned frequency never changes, see:
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178 https://arstechnica.com/civis/viewtopic.php?f=19&t=465002
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179 """
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180 curr, min_, max_ = cext.cpu_freq()
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181 return [_common.scpufreq(curr, min_, max_)]
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182
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183
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184 # =====================================================================
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185 # --- disks
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186 # =====================================================================
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187
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188
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189 disk_usage = _psposix.disk_usage
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190 disk_io_counters = cext.disk_io_counters
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191
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192
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193 def disk_partitions(all=False):
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194 """Return mounted disk partitions as a list of namedtuples."""
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195 retlist = []
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196 partitions = cext.disk_partitions()
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197 for partition in partitions:
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198 device, mountpoint, fstype, opts = partition
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199 if device == 'none':
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200 device = ''
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201 if not all:
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202 if not os.path.isabs(device) or not os.path.exists(device):
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203 continue
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204 ntuple = _common.sdiskpart(device, mountpoint, fstype, opts)
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205 retlist.append(ntuple)
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206 return retlist
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207
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208
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209 # =====================================================================
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210 # --- sensors
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211 # =====================================================================
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212
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213
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214 def sensors_battery():
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215 """Return battery information."""
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216 try:
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217 percent, minsleft, power_plugged = cext.sensors_battery()
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218 except NotImplementedError:
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219 # no power source - return None according to interface
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220 return None
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221 power_plugged = power_plugged == 1
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222 if power_plugged:
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223 secsleft = _common.POWER_TIME_UNLIMITED
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224 elif minsleft == -1:
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225 secsleft = _common.POWER_TIME_UNKNOWN
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226 else:
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227 secsleft = minsleft * 60
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228 return _common.sbattery(percent, secsleft, power_plugged)
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229
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230
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231 # =====================================================================
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232 # --- network
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233 # =====================================================================
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234
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235
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236 net_io_counters = cext.net_io_counters
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237 net_if_addrs = cext_posix.net_if_addrs
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238
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239
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240 def net_connections(kind='inet'):
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241 """System-wide network connections."""
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242 # Note: on macOS this will fail with AccessDenied unless
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243 # the process is owned by root.
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244 ret = []
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245 for pid in pids():
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246 try:
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247 cons = Process(pid).connections(kind)
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248 except NoSuchProcess:
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249 continue
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250 else:
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251 if cons:
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252 for c in cons:
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253 c = list(c) + [pid]
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254 ret.append(_common.sconn(*c))
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255 return ret
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256
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257
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258 def net_if_stats():
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259 """Get NIC stats (isup, duplex, speed, mtu)."""
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260 names = net_io_counters().keys()
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261 ret = {}
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262 for name in names:
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263 try:
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264 mtu = cext_posix.net_if_mtu(name)
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265 isup = cext_posix.net_if_flags(name)
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266 duplex, speed = cext_posix.net_if_duplex_speed(name)
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267 except OSError as err:
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268 # https://github.com/giampaolo/psutil/issues/1279
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269 if err.errno != errno.ENODEV:
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270 raise
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271 else:
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272 if hasattr(_common, 'NicDuplex'):
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273 duplex = _common.NicDuplex(duplex)
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274 ret[name] = _common.snicstats(isup, duplex, speed, mtu)
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275 return ret
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276
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277
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278 # =====================================================================
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279 # --- other system functions
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280 # =====================================================================
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281
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282
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283 def boot_time():
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284 """The system boot time expressed in seconds since the epoch."""
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285 return cext.boot_time()
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286
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287
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288 def users():
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289 """Return currently connected users as a list of namedtuples."""
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290 retlist = []
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291 rawlist = cext.users()
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292 for item in rawlist:
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293 user, tty, hostname, tstamp, pid = item
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294 if tty == '~':
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295 continue # reboot or shutdown
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296 if not tstamp:
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297 continue
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298 nt = _common.suser(user, tty or None, hostname or None, tstamp, pid)
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299 retlist.append(nt)
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300 return retlist
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301
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302
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303 # =====================================================================
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304 # --- processes
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305 # =====================================================================
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306
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307
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308 def pids():
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309 ls = cext.pids()
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310 if 0 not in ls:
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311 # On certain macOS versions pids() C doesn't return PID 0 but
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312 # "ps" does and the process is querable via sysctl():
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313 # https://travis-ci.org/giampaolo/psutil/jobs/309619941
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314 try:
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315 Process(0).create_time()
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316 ls.insert(0, 0)
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317 except NoSuchProcess:
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318 pass
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319 except AccessDenied:
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320 ls.insert(0, 0)
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321 return ls
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322
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323
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324 pid_exists = _psposix.pid_exists
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325
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326
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327 def is_zombie(pid):
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328 try:
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329 st = cext.proc_kinfo_oneshot(pid)[kinfo_proc_map['status']]
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330 return st == cext.SZOMB
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331 except Exception:
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332 return False
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333
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334
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335 def wrap_exceptions(fun):
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336 """Decorator which translates bare OSError exceptions into
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337 NoSuchProcess and AccessDenied.
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338 """
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339 @functools.wraps(fun)
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340 def wrapper(self, *args, **kwargs):
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341 try:
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342 return fun(self, *args, **kwargs)
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343 except ProcessLookupError:
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344 if is_zombie(self.pid):
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345 raise ZombieProcess(self.pid, self._name, self._ppid)
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346 else:
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347 raise NoSuchProcess(self.pid, self._name)
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348 except PermissionError:
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349 raise AccessDenied(self.pid, self._name)
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350 except cext.ZombieProcessError:
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351 raise ZombieProcess(self.pid, self._name, self._ppid)
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352 return wrapper
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353
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354
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355 @contextlib.contextmanager
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356 def catch_zombie(proc):
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357 """There are some poor C APIs which incorrectly raise ESRCH when
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358 the process is still alive or it's a zombie, or even RuntimeError
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359 (those who don't set errno). This is here in order to solve:
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360 https://github.com/giampaolo/psutil/issues/1044
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361 """
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362 try:
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363 yield
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364 except (OSError, RuntimeError) as err:
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365 if isinstance(err, RuntimeError) or err.errno == errno.ESRCH:
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366 try:
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367 # status() is not supposed to lie and correctly detect
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368 # zombies so if it raises ESRCH it's true.
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369 status = proc.status()
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370 except NoSuchProcess:
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371 raise err
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372 else:
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373 if status == _common.STATUS_ZOMBIE:
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374 raise ZombieProcess(proc.pid, proc._name, proc._ppid)
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375 else:
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376 raise AccessDenied(proc.pid, proc._name)
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377 else:
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378 raise
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379
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380
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381 class Process(object):
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382 """Wrapper class around underlying C implementation."""
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383
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384 __slots__ = ["pid", "_name", "_ppid", "_cache"]
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385
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386 def __init__(self, pid):
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387 self.pid = pid
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388 self._name = None
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389 self._ppid = None
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390
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diff changeset
391 @wrap_exceptions
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392 @memoize_when_activated
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393 def _get_kinfo_proc(self):
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394 # Note: should work with all PIDs without permission issues.
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395 ret = cext.proc_kinfo_oneshot(self.pid)
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396 assert len(ret) == len(kinfo_proc_map)
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397 return ret
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398
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399 @wrap_exceptions
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400 @memoize_when_activated
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401 def _get_pidtaskinfo(self):
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402 # Note: should work for PIDs owned by user only.
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403 with catch_zombie(self):
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404 ret = cext.proc_pidtaskinfo_oneshot(self.pid)
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405 assert len(ret) == len(pidtaskinfo_map)
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406 return ret
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407
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408 def oneshot_enter(self):
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409 self._get_kinfo_proc.cache_activate(self)
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410 self._get_pidtaskinfo.cache_activate(self)
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411
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412 def oneshot_exit(self):
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413 self._get_kinfo_proc.cache_deactivate(self)
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414 self._get_pidtaskinfo.cache_deactivate(self)
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415
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416 @wrap_exceptions
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417 def name(self):
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418 name = self._get_kinfo_proc()[kinfo_proc_map['name']]
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419 return name if name is not None else cext.proc_name(self.pid)
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420
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421 @wrap_exceptions
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422 def exe(self):
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423 with catch_zombie(self):
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424 return cext.proc_exe(self.pid)
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425
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426 @wrap_exceptions
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427 def cmdline(self):
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428 with catch_zombie(self):
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429 return cext.proc_cmdline(self.pid)
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430
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431 @wrap_exceptions
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432 def environ(self):
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433 with catch_zombie(self):
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434 return parse_environ_block(cext.proc_environ(self.pid))
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435
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436 @wrap_exceptions
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437 def ppid(self):
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438 self._ppid = self._get_kinfo_proc()[kinfo_proc_map['ppid']]
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439 return self._ppid
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440
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441 @wrap_exceptions
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442 def cwd(self):
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443 with catch_zombie(self):
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444 return cext.proc_cwd(self.pid)
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445
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446 @wrap_exceptions
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447 def uids(self):
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448 rawtuple = self._get_kinfo_proc()
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449 return _common.puids(
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450 rawtuple[kinfo_proc_map['ruid']],
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451 rawtuple[kinfo_proc_map['euid']],
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452 rawtuple[kinfo_proc_map['suid']])
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453
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454 @wrap_exceptions
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455 def gids(self):
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456 rawtuple = self._get_kinfo_proc()
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457 return _common.puids(
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458 rawtuple[kinfo_proc_map['rgid']],
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459 rawtuple[kinfo_proc_map['egid']],
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460 rawtuple[kinfo_proc_map['sgid']])
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461
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462 @wrap_exceptions
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463 def terminal(self):
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464 tty_nr = self._get_kinfo_proc()[kinfo_proc_map['ttynr']]
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465 tmap = _psposix.get_terminal_map()
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466 try:
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467 return tmap[tty_nr]
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468 except KeyError:
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469 return None
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470
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471 @wrap_exceptions
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472 def memory_info(self):
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473 rawtuple = self._get_pidtaskinfo()
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474 return pmem(
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475 rawtuple[pidtaskinfo_map['rss']],
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476 rawtuple[pidtaskinfo_map['vms']],
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477 rawtuple[pidtaskinfo_map['pfaults']],
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478 rawtuple[pidtaskinfo_map['pageins']],
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479 )
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480
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481 @wrap_exceptions
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482 def memory_full_info(self):
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483 basic_mem = self.memory_info()
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484 uss = cext.proc_memory_uss(self.pid)
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485 return pfullmem(*basic_mem + (uss, ))
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486
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487 @wrap_exceptions
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488 def cpu_times(self):
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489 rawtuple = self._get_pidtaskinfo()
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490 return _common.pcputimes(
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491 rawtuple[pidtaskinfo_map['cpuutime']],
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492 rawtuple[pidtaskinfo_map['cpustime']],
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493 # children user / system times are not retrievable (set to 0)
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494 0.0, 0.0)
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495
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496 @wrap_exceptions
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497 def create_time(self):
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498 return self._get_kinfo_proc()[kinfo_proc_map['ctime']]
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499
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500 @wrap_exceptions
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501 def num_ctx_switches(self):
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502 # Unvoluntary value seems not to be available;
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503 # getrusage() numbers seems to confirm this theory.
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504 # We set it to 0.
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505 vol = self._get_pidtaskinfo()[pidtaskinfo_map['volctxsw']]
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506 return _common.pctxsw(vol, 0)
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507
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508 @wrap_exceptions
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509 def num_threads(self):
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510 return self._get_pidtaskinfo()[pidtaskinfo_map['numthreads']]
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511
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512 @wrap_exceptions
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513 def open_files(self):
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514 if self.pid == 0:
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515 return []
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516 files = []
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517 with catch_zombie(self):
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518 rawlist = cext.proc_open_files(self.pid)
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519 for path, fd in rawlist:
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520 if isfile_strict(path):
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521 ntuple = _common.popenfile(path, fd)
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522 files.append(ntuple)
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523 return files
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524
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525 @wrap_exceptions
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526 def connections(self, kind='inet'):
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527 if kind not in conn_tmap:
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528 raise ValueError("invalid %r kind argument; choose between %s"
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529 % (kind, ', '.join([repr(x) for x in conn_tmap])))
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530 families, types = conn_tmap[kind]
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531 with catch_zombie(self):
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532 rawlist = cext.proc_connections(self.pid, families, types)
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533 ret = []
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534 for item in rawlist:
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535 fd, fam, type, laddr, raddr, status = item
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536 nt = conn_to_ntuple(fd, fam, type, laddr, raddr, status,
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537 TCP_STATUSES)
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538 ret.append(nt)
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539 return ret
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540
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541 @wrap_exceptions
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542 def num_fds(self):
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543 if self.pid == 0:
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544 return 0
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545 with catch_zombie(self):
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546 return cext.proc_num_fds(self.pid)
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547
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548 @wrap_exceptions
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549 def wait(self, timeout=None):
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550 return _psposix.wait_pid(self.pid, timeout, self._name)
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551
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552 @wrap_exceptions
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553 def nice_get(self):
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554 with catch_zombie(self):
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555 return cext_posix.getpriority(self.pid)
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556
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557 @wrap_exceptions
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558 def nice_set(self, value):
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559 with catch_zombie(self):
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560 return cext_posix.setpriority(self.pid, value)
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561
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562 @wrap_exceptions
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563 def status(self):
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564 code = self._get_kinfo_proc()[kinfo_proc_map['status']]
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565 # XXX is '?' legit? (we're not supposed to return it anyway)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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566 return PROC_STATUSES.get(code, '?')
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567
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568 @wrap_exceptions
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569 def threads(self):
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570 rawlist = cext.proc_threads(self.pid)
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571 retlist = []
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572 for thread_id, utime, stime in rawlist:
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573 ntuple = _common.pthread(thread_id, utime, stime)
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574 retlist.append(ntuple)
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575 return retlist