Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/psutil/_psosx.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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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 = cext_posix.getpagesize() |
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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 maxfile = maxpath = None # set later |
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205 ntuple = _common.sdiskpart(device, mountpoint, fstype, opts, |
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206 maxfile, maxpath) |
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207 retlist.append(ntuple) |
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208 return retlist |
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209 |
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210 |
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211 # ===================================================================== |
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212 # --- sensors |
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213 # ===================================================================== |
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214 |
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215 |
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216 def sensors_battery(): |
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217 """Return battery information.""" |
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218 try: |
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219 percent, minsleft, power_plugged = cext.sensors_battery() |
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220 except NotImplementedError: |
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221 # no power source - return None according to interface |
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222 return None |
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223 power_plugged = power_plugged == 1 |
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224 if power_plugged: |
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225 secsleft = _common.POWER_TIME_UNLIMITED |
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226 elif minsleft == -1: |
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227 secsleft = _common.POWER_TIME_UNKNOWN |
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228 else: |
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229 secsleft = minsleft * 60 |
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230 return _common.sbattery(percent, secsleft, power_plugged) |
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231 |
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232 |
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233 # ===================================================================== |
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234 # --- network |
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235 # ===================================================================== |
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236 |
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237 |
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238 net_io_counters = cext.net_io_counters |
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239 net_if_addrs = cext_posix.net_if_addrs |
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240 |
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241 |
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242 def net_connections(kind='inet'): |
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243 """System-wide network connections.""" |
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244 # Note: on macOS this will fail with AccessDenied unless |
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245 # the process is owned by root. |
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246 ret = [] |
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247 for pid in pids(): |
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248 try: |
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249 cons = Process(pid).connections(kind) |
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250 except NoSuchProcess: |
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251 continue |
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252 else: |
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253 if cons: |
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254 for c in cons: |
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255 c = list(c) + [pid] |
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256 ret.append(_common.sconn(*c)) |
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257 return ret |
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258 |
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259 |
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260 def net_if_stats(): |
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261 """Get NIC stats (isup, duplex, speed, mtu).""" |
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262 names = net_io_counters().keys() |
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263 ret = {} |
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264 for name in names: |
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265 try: |
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266 mtu = cext_posix.net_if_mtu(name) |
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267 isup = cext_posix.net_if_is_running(name) |
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268 duplex, speed = cext_posix.net_if_duplex_speed(name) |
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269 except OSError as err: |
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270 # https://github.com/giampaolo/psutil/issues/1279 |
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271 if err.errno != errno.ENODEV: |
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272 raise |
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273 else: |
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274 if hasattr(_common, 'NicDuplex'): |
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275 duplex = _common.NicDuplex(duplex) |
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276 ret[name] = _common.snicstats(isup, duplex, speed, mtu) |
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277 return ret |
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278 |
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279 |
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280 # ===================================================================== |
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281 # --- other system functions |
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282 # ===================================================================== |
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283 |
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284 |
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285 def boot_time(): |
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286 """The system boot time expressed in seconds since the epoch.""" |
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287 return cext.boot_time() |
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288 |
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289 |
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290 def users(): |
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291 """Return currently connected users as a list of namedtuples.""" |
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292 retlist = [] |
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293 rawlist = cext.users() |
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294 for item in rawlist: |
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295 user, tty, hostname, tstamp, pid = item |
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296 if tty == '~': |
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297 continue # reboot or shutdown |
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298 if not tstamp: |
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299 continue |
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300 nt = _common.suser(user, tty or None, hostname or None, tstamp, pid) |
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301 retlist.append(nt) |
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302 return retlist |
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303 |
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304 |
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305 # ===================================================================== |
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306 # --- processes |
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307 # ===================================================================== |
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308 |
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309 |
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310 def pids(): |
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311 ls = cext.pids() |
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312 if 0 not in ls: |
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313 # On certain macOS versions pids() C doesn't return PID 0 but |
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314 # "ps" does and the process is querable via sysctl(): |
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315 # https://travis-ci.org/giampaolo/psutil/jobs/309619941 |
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316 try: |
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317 Process(0).create_time() |
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318 ls.insert(0, 0) |
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319 except NoSuchProcess: |
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320 pass |
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321 except AccessDenied: |
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322 ls.insert(0, 0) |
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323 return ls |
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324 |
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325 |
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326 pid_exists = _psposix.pid_exists |
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327 |
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328 |
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329 def is_zombie(pid): |
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330 try: |
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331 st = cext.proc_kinfo_oneshot(pid)[kinfo_proc_map['status']] |
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332 return st == cext.SZOMB |
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333 except Exception: |
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334 return False |
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335 |
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336 |
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337 def wrap_exceptions(fun): |
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338 """Decorator which translates bare OSError exceptions into |
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339 NoSuchProcess and AccessDenied. |
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340 """ |
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341 @functools.wraps(fun) |
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342 def wrapper(self, *args, **kwargs): |
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343 try: |
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344 return fun(self, *args, **kwargs) |
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345 except ProcessLookupError: |
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346 if is_zombie(self.pid): |
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347 raise ZombieProcess(self.pid, self._name, self._ppid) |
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348 else: |
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349 raise NoSuchProcess(self.pid, self._name) |
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350 except PermissionError: |
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351 raise AccessDenied(self.pid, self._name) |
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352 except cext.ZombieProcessError: |
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353 raise ZombieProcess(self.pid, self._name, self._ppid) |
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354 return wrapper |
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355 |
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356 |
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357 @contextlib.contextmanager |
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358 def catch_zombie(proc): |
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359 """There are some poor C APIs which incorrectly raise ESRCH when |
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360 the process is still alive or it's a zombie, or even RuntimeError |
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361 (those who don't set errno). This is here in order to solve: |
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362 https://github.com/giampaolo/psutil/issues/1044 |
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363 """ |
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364 try: |
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365 yield |
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366 except (OSError, RuntimeError) as err: |
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367 if isinstance(err, RuntimeError) or err.errno == errno.ESRCH: |
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368 try: |
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369 # status() is not supposed to lie and correctly detect |
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370 # zombies so if it raises ESRCH it's true. |
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371 status = proc.status() |
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372 except NoSuchProcess: |
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373 raise err |
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374 else: |
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375 if status == _common.STATUS_ZOMBIE: |
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376 raise ZombieProcess(proc.pid, proc._name, proc._ppid) |
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377 else: |
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378 raise AccessDenied(proc.pid, proc._name) |
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379 else: |
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380 raise |
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381 |
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382 |
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383 class Process(object): |
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384 """Wrapper class around underlying C implementation.""" |
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385 |
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386 __slots__ = ["pid", "_name", "_ppid", "_cache"] |
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387 |
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388 def __init__(self, pid): |
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389 self.pid = pid |
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390 self._name = None |
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391 self._ppid = None |
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392 |
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393 @wrap_exceptions |
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394 @memoize_when_activated |
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395 def _get_kinfo_proc(self): |
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396 # Note: should work with all PIDs without permission issues. |
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397 ret = cext.proc_kinfo_oneshot(self.pid) |
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398 assert len(ret) == len(kinfo_proc_map) |
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399 return ret |
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400 |
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401 @wrap_exceptions |
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402 @memoize_when_activated |
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403 def _get_pidtaskinfo(self): |
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404 # Note: should work for PIDs owned by user only. |
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405 with catch_zombie(self): |
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406 ret = cext.proc_pidtaskinfo_oneshot(self.pid) |
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407 assert len(ret) == len(pidtaskinfo_map) |
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408 return ret |
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409 |
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410 def oneshot_enter(self): |
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411 self._get_kinfo_proc.cache_activate(self) |
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412 self._get_pidtaskinfo.cache_activate(self) |
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413 |
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414 def oneshot_exit(self): |
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415 self._get_kinfo_proc.cache_deactivate(self) |
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416 self._get_pidtaskinfo.cache_deactivate(self) |
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417 |
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418 @wrap_exceptions |
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419 def name(self): |
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420 name = self._get_kinfo_proc()[kinfo_proc_map['name']] |
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421 return name if name is not None else cext.proc_name(self.pid) |
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422 |
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423 @wrap_exceptions |
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424 def exe(self): |
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425 with catch_zombie(self): |
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426 return cext.proc_exe(self.pid) |
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427 |
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428 @wrap_exceptions |
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429 def cmdline(self): |
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430 with catch_zombie(self): |
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431 return cext.proc_cmdline(self.pid) |
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432 |
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433 @wrap_exceptions |
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434 def environ(self): |
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435 with catch_zombie(self): |
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436 return parse_environ_block(cext.proc_environ(self.pid)) |
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437 |
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438 @wrap_exceptions |
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439 def ppid(self): |
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440 self._ppid = self._get_kinfo_proc()[kinfo_proc_map['ppid']] |
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441 return self._ppid |
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442 |
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443 @wrap_exceptions |
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444 def cwd(self): |
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445 with catch_zombie(self): |
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446 return cext.proc_cwd(self.pid) |
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447 |
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448 @wrap_exceptions |
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449 def uids(self): |
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450 rawtuple = self._get_kinfo_proc() |
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451 return _common.puids( |
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452 rawtuple[kinfo_proc_map['ruid']], |
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453 rawtuple[kinfo_proc_map['euid']], |
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454 rawtuple[kinfo_proc_map['suid']]) |
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455 |
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456 @wrap_exceptions |
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457 def gids(self): |
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458 rawtuple = self._get_kinfo_proc() |
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459 return _common.puids( |
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460 rawtuple[kinfo_proc_map['rgid']], |
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461 rawtuple[kinfo_proc_map['egid']], |
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462 rawtuple[kinfo_proc_map['sgid']]) |
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463 |
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464 @wrap_exceptions |
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465 def terminal(self): |
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466 tty_nr = self._get_kinfo_proc()[kinfo_proc_map['ttynr']] |
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467 tmap = _psposix.get_terminal_map() |
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468 try: |
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469 return tmap[tty_nr] |
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470 except KeyError: |
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471 return None |
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472 |
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473 @wrap_exceptions |
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474 def memory_info(self): |
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475 rawtuple = self._get_pidtaskinfo() |
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476 return pmem( |
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477 rawtuple[pidtaskinfo_map['rss']], |
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478 rawtuple[pidtaskinfo_map['vms']], |
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479 rawtuple[pidtaskinfo_map['pfaults']], |
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480 rawtuple[pidtaskinfo_map['pageins']], |
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481 ) |
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482 |
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483 @wrap_exceptions |
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484 def memory_full_info(self): |
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485 basic_mem = self.memory_info() |
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486 uss = cext.proc_memory_uss(self.pid) |
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487 return pfullmem(*basic_mem + (uss, )) |
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488 |
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489 @wrap_exceptions |
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490 def cpu_times(self): |
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491 rawtuple = self._get_pidtaskinfo() |
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492 return _common.pcputimes( |
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493 rawtuple[pidtaskinfo_map['cpuutime']], |
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494 rawtuple[pidtaskinfo_map['cpustime']], |
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495 # children user / system times are not retrievable (set to 0) |
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496 0.0, 0.0) |
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497 |
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498 @wrap_exceptions |
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499 def create_time(self): |
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500 return self._get_kinfo_proc()[kinfo_proc_map['ctime']] |
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501 |
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502 @wrap_exceptions |
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503 def num_ctx_switches(self): |
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504 # Unvoluntary value seems not to be available; |
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505 # getrusage() numbers seems to confirm this theory. |
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506 # We set it to 0. |
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507 vol = self._get_pidtaskinfo()[pidtaskinfo_map['volctxsw']] |
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508 return _common.pctxsw(vol, 0) |
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509 |
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510 @wrap_exceptions |
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511 def num_threads(self): |
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512 return self._get_pidtaskinfo()[pidtaskinfo_map['numthreads']] |
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513 |
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514 @wrap_exceptions |
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515 def open_files(self): |
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516 if self.pid == 0: |
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517 return [] |
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518 files = [] |
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519 with catch_zombie(self): |
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520 rawlist = cext.proc_open_files(self.pid) |
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521 for path, fd in rawlist: |
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522 if isfile_strict(path): |
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523 ntuple = _common.popenfile(path, fd) |
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524 files.append(ntuple) |
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525 return files |
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526 |
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527 @wrap_exceptions |
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528 def connections(self, kind='inet'): |
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529 if kind not in conn_tmap: |
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530 raise ValueError("invalid %r kind argument; choose between %s" |
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531 % (kind, ', '.join([repr(x) for x in conn_tmap]))) |
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532 families, types = conn_tmap[kind] |
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533 with catch_zombie(self): |
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534 rawlist = cext.proc_connections(self.pid, families, types) |
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535 ret = [] |
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536 for item in rawlist: |
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537 fd, fam, type, laddr, raddr, status = item |
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538 nt = conn_to_ntuple(fd, fam, type, laddr, raddr, status, |
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539 TCP_STATUSES) |
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540 ret.append(nt) |
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541 return ret |
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542 |
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543 @wrap_exceptions |
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544 def num_fds(self): |
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545 if self.pid == 0: |
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546 return 0 |
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547 with catch_zombie(self): |
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548 return cext.proc_num_fds(self.pid) |
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549 |
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550 @wrap_exceptions |
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551 def wait(self, timeout=None): |
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552 return _psposix.wait_pid(self.pid, timeout, self._name) |
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553 |
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554 @wrap_exceptions |
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555 def nice_get(self): |
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556 with catch_zombie(self): |
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557 return cext_posix.getpriority(self.pid) |
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558 |
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559 @wrap_exceptions |
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560 def nice_set(self, value): |
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561 with catch_zombie(self): |
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562 return cext_posix.setpriority(self.pid, value) |
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563 |
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564 @wrap_exceptions |
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565 def status(self): |
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566 code = self._get_kinfo_proc()[kinfo_proc_map['status']] |
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567 # XXX is '?' legit? (we're not supposed to return it anyway) |
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568 return PROC_STATUSES.get(code, '?') |
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569 |
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570 @wrap_exceptions |
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571 def threads(self): |
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572 rawlist = cext.proc_threads(self.pid) |
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573 retlist = [] |
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574 for thread_id, utime, stime in rawlist: |
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575 ntuple = _common.pthread(thread_id, utime, stime) |
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576 retlist.append(ntuple) |
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577 return retlist |