Mercurial > public > mercurial-scm > hg

annotate mercurial/utils/procutil.py @ 44960:78cafd48b9b2

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merge with stable
author Augie Fackler <augie@google.com>
date Mon, 15 Jun 2020 12:00:15 -0400
parents f9734b2d59cc 065704cbdbdb
children 3fadbdc47aed
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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5be286db5fb5 procutil: move process/executable management functions to new module
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1 # procutil.py - utility for managing processes and executable environment
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Martin Geisler <mg@lazybytes.net>
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2 #
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Martin Geisler <mg@lazybytes.net>
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3 # Copyright 2005 K. Thananchayan <thananck@yahoo.com>
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4 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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5 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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6 #
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7 # This software may be used and distributed according to the terms of the
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8 # GNU General Public License version 2 or any later version.
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mpm@selenic.com
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9
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10 from __future__ import absolute_import
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11
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12 import contextlib
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13 import errno
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14 import io
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15 import os
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16 import signal
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17 import subprocess
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18 import sys
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Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43912
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19 import threading
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20 import time
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21
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22 from ..i18n import _
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23 from ..pycompat import (
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24 getattr,
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25 open,
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26 )
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27
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28 from .. import (
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29 encoding,
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30 error,
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31 policy,
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32 pycompat,
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33 )
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34
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35 # Import like this to keep import-checker happy
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36 from ..utils import resourceutil
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37
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38 osutil = policy.importmod('osutil')
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39
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40 stderr = pycompat.stderr
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41 stdin = pycompat.stdin
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42 stdout = pycompat.stdout
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43
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44
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45 def isatty(fp):
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46 try:
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47 return fp.isatty()
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48 except AttributeError:
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49 return False
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50
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51
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Manuel Jacob <me@manueljacob.de>
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52 if pycompat.ispy3:
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Manuel Jacob <me@manueljacob.de>
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53
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54 class LineBufferedWrapper(object):
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55 def __init__(self, orig):
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56 self.orig = orig
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57
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58 def __getattr__(self, attr):
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59 return getattr(self.orig, attr)
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60
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61 def write(self, s):
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62 orig = self.orig
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63 res = orig.write(s)
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64 if s.endswith(b'\n'):
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65 orig.flush()
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66 return res
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67
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68 io.BufferedIOBase.register(LineBufferedWrapper)
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69
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70
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71 # glibc determines buffering on first write to stdout - if we replace a TTY
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72 # destined stdout with a pipe destined stdout (e.g. pager), we want line
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73 # buffering (or unbuffered, on Windows)
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74 if isatty(stdout):
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75 if pycompat.iswindows:
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76 # Windows doesn't support line buffering
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77 stdout = os.fdopen(stdout.fileno(), 'wb', 0)
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78 elif pycompat.ispy3:
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79 # On Python 3, buffered binary streams can't be set line-buffered.
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80 # Therefore we have a wrapper that implements line buffering.
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81 if isinstance(stdout, io.BufferedIOBase) and not isinstance(
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82 stdout, LineBufferedWrapper
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83 ):
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84 stdout = LineBufferedWrapper(stdout)
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85 else:
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86 stdout = os.fdopen(stdout.fileno(), 'wb', 1)
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87
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88 if pycompat.iswindows:
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89 from .. import windows as platform
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90
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91 stdout = platform.winstdout(stdout)
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92 else:
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93 from .. import posix as platform
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94
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95 findexe = platform.findexe
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96 _gethgcmd = platform.gethgcmd
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97 getuser = platform.getuser
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98 getpid = os.getpid
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99 hidewindow = platform.hidewindow
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100 readpipe = platform.readpipe
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101 setbinary = platform.setbinary
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102 setsignalhandler = platform.setsignalhandler
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103 shellquote = platform.shellquote
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104 shellsplit = platform.shellsplit
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105 spawndetached = platform.spawndetached
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106 sshargs = platform.sshargs
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107 testpid = platform.testpid
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108
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109 try:
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110 setprocname = osutil.setprocname
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111 except AttributeError:
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112 pass
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113 try:
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114 unblocksignal = osutil.unblocksignal
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115 except AttributeError:
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116 pass
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117
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118 closefds = pycompat.isposix
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119
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120
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121 def explainexit(code):
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122 """return a message describing a subprocess status
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123 (codes from kill are negative - not os.system/wait encoding)"""
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124 if code >= 0:
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125 return _(b"exited with status %d") % code
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126 return _(b"killed by signal %d") % -code
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127
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128
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129 class _pfile(object):
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130 """File-like wrapper for a stream opened by subprocess.Popen()"""
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131
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132 def __init__(self, proc, fp):
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133 self._proc = proc
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134 self._fp = fp
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135
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136 def close(self):
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137 # unlike os.popen(), this returns an integer in subprocess coding
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138 self._fp.close()
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139 return self._proc.wait()
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140
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141 def __iter__(self):
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142 return iter(self._fp)
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143
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144 def __getattr__(self, attr):
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145 return getattr(self._fp, attr)
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146
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147 def __enter__(self):
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148 return self
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149
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150 def __exit__(self, exc_type, exc_value, exc_tb):
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151 self.close()
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152
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153
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154 def popen(cmd, mode=b'rb', bufsize=-1):
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155 if mode == b'rb':
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156 return _popenreader(cmd, bufsize)
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157 elif mode == b'wb':
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158 return _popenwriter(cmd, bufsize)
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159 raise error.ProgrammingError(b'unsupported mode: %r' % mode)
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160
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161
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162 def _popenreader(cmd, bufsize):
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163 p = subprocess.Popen(
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164 tonativestr(cmd),
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165 shell=True,
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166 bufsize=bufsize,
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167 close_fds=closefds,
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168 stdout=subprocess.PIPE,
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169 )
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170 return _pfile(p, p.stdout)
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171
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172
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173 def _popenwriter(cmd, bufsize):
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174 p = subprocess.Popen(
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175 tonativestr(cmd),
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176 shell=True,
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177 bufsize=bufsize,
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178 close_fds=closefds,
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179 stdin=subprocess.PIPE,
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180 )
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181 return _pfile(p, p.stdin)
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182
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183
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184 def popen2(cmd, env=None):
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185 # Setting bufsize to -1 lets the system decide the buffer size.
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186 # The default for bufsize is 0, meaning unbuffered. This leads to
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187 # poor performance on Mac OS X: http://bugs.python.org/issue4194
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188 p = subprocess.Popen(
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189 tonativestr(cmd),
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190 shell=True,
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191 bufsize=-1,
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192 close_fds=closefds,
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193 stdin=subprocess.PIPE,
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194 stdout=subprocess.PIPE,
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195 env=tonativeenv(env),
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196 )
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197 return p.stdin, p.stdout
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198
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199
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200 def popen3(cmd, env=None):
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201 stdin, stdout, stderr, p = popen4(cmd, env)
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202 return stdin, stdout, stderr
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203
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204
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205 def popen4(cmd, env=None, bufsize=-1):
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206 p = subprocess.Popen(
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207 tonativestr(cmd),
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208 shell=True,
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209 bufsize=bufsize,
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210 close_fds=closefds,
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211 stdin=subprocess.PIPE,
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212 stdout=subprocess.PIPE,
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213 stderr=subprocess.PIPE,
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214 env=tonativeenv(env),
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215 )
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216 return p.stdin, p.stdout, p.stderr, p
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217
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218
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219 def pipefilter(s, cmd):
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220 '''filter string S through command CMD, returning its output'''
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221 p = subprocess.Popen(
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222 tonativestr(cmd),
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223 shell=True,
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224 close_fds=closefds,
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225 stdin=subprocess.PIPE,
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226 stdout=subprocess.PIPE,
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227 )
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228 pout, perr = p.communicate(s)
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229 return pout
419
28511fc21073 [PATCH] file seperator handling for the other 'OS'
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230
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231
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232 def tempfilter(s, cmd):
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233 '''filter string S through a pair of temporary files with CMD.
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234 CMD is used as a template to create the real command to be run,
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235 with the strings INFILE and OUTFILE replaced by the real names of
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236 the temporary files generated.'''
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237 inname, outname = None, None
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238 try:
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239 infd, inname = pycompat.mkstemp(prefix=b'hg-filter-in-')
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240 fp = os.fdopen(infd, 'wb')
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241 fp.write(s)
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242 fp.close()
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243 outfd, outname = pycompat.mkstemp(prefix=b'hg-filter-out-')
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244 os.close(outfd)
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245 cmd = cmd.replace(b'INFILE', inname)
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246 cmd = cmd.replace(b'OUTFILE', outname)
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247 code = system(cmd)
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248 if pycompat.sysplatform == b'OpenVMS' and code & 1:
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249 code = 0
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250 if code:
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251 raise error.Abort(
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252 _(b"command '%s' failed: %s") % (cmd, explainexit(code))
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253 )
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254 with open(outname, b'rb') as fp:
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255 return fp.read()
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256 finally:
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257 try:
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258 if inname:
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259 os.unlink(inname)
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260 except OSError:
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261 pass
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262 try:
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263 if outname:
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264 os.unlink(outname)
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265 except OSError:
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266 pass
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267
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268
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269 _filtertable = {
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270 b'tempfile:': tempfilter,
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271 b'pipe:': pipefilter,
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272 }
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273
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274
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275 def filter(s, cmd):
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276 """filter a string through a command that transforms its input to its
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277 output"""
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278 for name, fn in pycompat.iteritems(_filtertable):
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diff changeset
279 if cmd.startswith(name):
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280 return fn(s, cmd[len(name) :].lstrip())
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281 return pipefilter(s, cmd)
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282
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283
22632
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Mads Kiilerich <madski@unity3d.com>
parents: 22245
diff changeset
284 _hgexecutable = None
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285
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286
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287 def hgexecutable():
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288 """return location of the 'hg' executable.
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289
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290 Defaults to $HG or 'hg' in the search path.
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291 """
3d35c8cb5eb4 Simplify/correct finding the hg executable (fixes issue644)
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292 if _hgexecutable is None:
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293 hg = encoding.environ.get(b'HG')
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294 mainmod = sys.modules['__main__']
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295 if hg:
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diff changeset
296 _sethgexecutable(hg)
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Martin von Zweigbergk <martinvonz@google.com>
parents: 43657
diff changeset
297 elif resourceutil.mainfrozen():
43657
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298 if getattr(sys, 'frozen', None) == 'macosx_app':
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299 # Env variable set by py2app
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300 _sethgexecutable(encoding.environ[b'EXECUTABLEPATH'])
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diff changeset
301 else:
30669
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Pulkit Goyal <7895pulkit@gmail.com>
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302 _sethgexecutable(pycompat.sysexecutable)
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303 elif (
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304 not pycompat.iswindows
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305 and os.path.basename(getattr(mainmod, '__file__', '')) == 'hg'
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306 ):
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Pulkit Goyal <7895pulkit@gmail.com>
parents: 30988
diff changeset
307 _sethgexecutable(pycompat.fsencode(mainmod.__file__))
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"Paul Moore <p.f.moore@gmail.com>"
parents: 5659
diff changeset
308 else:
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309 _sethgexecutable(
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diff changeset
310 findexe(b'hg') or os.path.basename(pycompat.sysargv[0])
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diff changeset
311 )
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diff changeset
312 return _hgexecutable
4686
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parents: 4673
diff changeset
313
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314
14229
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Adrian Buehlmann <adrian@cadifra.com>
parents: 14228
diff changeset
315 def _sethgexecutable(path):
5062
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 4832
diff changeset
316 """set location of the 'hg' executable"""
4686
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 4673
diff changeset
317 global _hgexecutable
5062
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 4832
diff changeset
318 _hgexecutable = path
4686
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parents: 4673
diff changeset
319
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diff changeset
320
36793
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parents: 36791
diff changeset
321 def _testfileno(f, stdf):
26450
1138e1d05207 util.system: compare fileno to see if it needs stdout redirection
Yuya Nishihara <yuya@tcha.org>
parents: 26392
diff changeset
322 fileno = getattr(f, 'fileno', None)
36432
1ca4e86c7265 util: handle fileno() on Python 3 throwing io.UnsupportedOperation
Augie Fackler <augie@google.com>
parents: 36422
diff changeset
323 try:
36793
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parents: 36791
diff changeset
324 return fileno and fileno() == stdf.fileno()
36432
1ca4e86c7265 util: handle fileno() on Python 3 throwing io.UnsupportedOperation
Augie Fackler <augie@google.com>
parents: 36422
diff changeset
325 except io.UnsupportedOperation:
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diff changeset
326 return False # fileno() raised UnsupportedOperation
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diff changeset
327
26450
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Yuya Nishihara <yuya@tcha.org>
parents: 26392
diff changeset
328
36793
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Yuya Nishihara <yuya@tcha.org>
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diff changeset
329 def isstdin(f):
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diff changeset
330 return _testfileno(f, sys.__stdin__)
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331
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332
36793
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diff changeset
333 def isstdout(f):
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diff changeset
334 return _testfileno(f, sys.__stdout__)
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diff changeset
335
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336
37123
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diff changeset
337 def protectstdio(uin, uout):
37220
7f78de1c93aa procutil: redirect ui.fout to stderr while stdio is protected
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parents: 37219
diff changeset
338 """Duplicate streams and redirect original if (uin, uout) are stdio
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339
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diff changeset
340 If uin is stdin, it's redirected to /dev/null. If uout is stdout, it's
7f78de1c93aa procutil: redirect ui.fout to stderr while stdio is protected
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diff changeset
341 redirected to stderr so the output is still readable.
37123
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diff changeset
342
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diff changeset
343 Returns (fin, fout) which point to the original (uin, uout) fds, but
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344 may be copy of (uin, uout). The returned streams can be considered
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diff changeset
345 "owned" in that print(), exec(), etc. never reach to them.
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diff changeset
346 """
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diff changeset
347 uout.flush()
37219
ac71cbad5da3 procutil: unroll uin/uout loop in protectstdio()
Yuya Nishihara <yuya@tcha.org>
parents: 37124
diff changeset
348 fin, fout = uin, uout
39807
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Yuya Nishihara <yuya@tcha.org>
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diff changeset
349 if _testfileno(uin, stdin):
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diff changeset
350 newfd = os.dup(uin.fileno())
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diff changeset
351 nullfd = os.open(os.devnull, os.O_RDONLY)
37219
ac71cbad5da3 procutil: unroll uin/uout loop in protectstdio()
Yuya Nishihara <yuya@tcha.org>
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diff changeset
352 os.dup2(nullfd, uin.fileno())
37220
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Yuya Nishihara <yuya@tcha.org>
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diff changeset
353 os.close(nullfd)
43506
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Augie Fackler <augie@google.com>
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diff changeset
354 fin = os.fdopen(newfd, 'rb')
39807
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Yuya Nishihara <yuya@tcha.org>
parents: 38526
diff changeset
355 if _testfileno(uout, stdout):
37219
ac71cbad5da3 procutil: unroll uin/uout loop in protectstdio()
Yuya Nishihara <yuya@tcha.org>
parents: 37124
diff changeset
356 newfd = os.dup(uout.fileno())
37220
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Yuya Nishihara <yuya@tcha.org>
parents: 37219
diff changeset
357 os.dup2(stderr.fileno(), uout.fileno())
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
358 fout = os.fdopen(newfd, 'wb')
37219
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Yuya Nishihara <yuya@tcha.org>
parents: 37124
diff changeset
359 return fin, fout
37123
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parents: 37118
diff changeset
360
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diff changeset
361
37123
0216232f21ab procutil: move protectio/restoreio from commandserver
Yuya Nishihara <yuya@tcha.org>
parents: 37118
diff changeset
362 def restorestdio(uin, uout, fin, fout):
0216232f21ab procutil: move protectio/restoreio from commandserver
Yuya Nishihara <yuya@tcha.org>
parents: 37118
diff changeset
363 """Restore (uin, uout) streams from possibly duplicated (fin, fout)"""
0216232f21ab procutil: move protectio/restoreio from commandserver
Yuya Nishihara <yuya@tcha.org>
parents: 37118
diff changeset
364 uout.flush()
0216232f21ab procutil: move protectio/restoreio from commandserver
Yuya Nishihara <yuya@tcha.org>
parents: 37118
diff changeset
365 for f, uif in [(fin, uin), (fout, uout)]:
0216232f21ab procutil: move protectio/restoreio from commandserver
Yuya Nishihara <yuya@tcha.org>
parents: 37118
diff changeset
366 if f is not uif:
0216232f21ab procutil: move protectio/restoreio from commandserver
Yuya Nishihara <yuya@tcha.org>
parents: 37118
diff changeset
367 os.dup2(f.fileno(), uif.fileno())
0216232f21ab procutil: move protectio/restoreio from commandserver
Yuya Nishihara <yuya@tcha.org>
parents: 37118
diff changeset
368 f.close()
0216232f21ab procutil: move protectio/restoreio from commandserver
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parents: 37118
diff changeset
369
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diff changeset
370
30736
d9e5b0aeeb90 util: extract the logic calculating environment variables
Jun Wu <quark@fb.com>
parents: 30669
diff changeset
371 def shellenviron(environ=None):
d9e5b0aeeb90 util: extract the logic calculating environment variables
Jun Wu <quark@fb.com>
parents: 30669
diff changeset
372 """return environ with optional override, useful for shelling out"""
43076
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diff changeset
373
30736
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Jun Wu <quark@fb.com>
parents: 30669
diff changeset
374 def py2shell(val):
43787
be8552f25cab cleanup: fix docstring formatting
Matt Harbison <matt_harbison@yahoo.com>
parents: 43671
diff changeset
375 """convert python object into string that is useful to shell"""
30736
d9e5b0aeeb90 util: extract the logic calculating environment variables
Jun Wu <quark@fb.com>
parents: 30669
diff changeset
376 if val is None or val is False:
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
377 return b'0'
30736
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Jun Wu <quark@fb.com>
parents: 30669
diff changeset
378 if val is True:
43077
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Augie Fackler <augie@google.com>
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diff changeset
379 return b'1'
36418
d26b0bedfaa4 util: use pycompat.bytestr() instead of str()
Augie Fackler <augie@google.com>
parents: 36415
diff changeset
380 return pycompat.bytestr(val)
43076
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diff changeset
381
30736
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Jun Wu <quark@fb.com>
parents: 30669
diff changeset
382 env = dict(encoding.environ)
d9e5b0aeeb90 util: extract the logic calculating environment variables
Jun Wu <quark@fb.com>
parents: 30669
diff changeset
383 if environ:
43106
d783f945a701 py3: finish porting iteritems() to pycompat and remove source transformer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43096
diff changeset
384 env.update((k, py2shell(v)) for k, v in pycompat.iteritems(environ))
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
385 env[b'HG'] = hgexecutable()
30736
d9e5b0aeeb90 util: extract the logic calculating environment variables
Jun Wu <quark@fb.com>
parents: 30669
diff changeset
386 return env
d9e5b0aeeb90 util: extract the logic calculating environment variables
Jun Wu <quark@fb.com>
parents: 30669
diff changeset
387
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parents: 43019
diff changeset
388
38491
72286f9e324f procutil: add a shim for translating shell commands to native commands
Matt Harbison <matt_harbison@yahoo.com>
parents: 38454
diff changeset
389 if pycompat.iswindows:
43076
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Augie Fackler <augie@google.com>
parents: 43019
diff changeset
390
38491
72286f9e324f procutil: add a shim for translating shell commands to native commands
Matt Harbison <matt_harbison@yahoo.com>
parents: 38454
diff changeset
391 def shelltonative(cmd, env):
43478
54f4d094bab1 procutil: suppress pytype warnings around windows-only attributes
Augie Fackler <augie@google.com>
parents: 43165
diff changeset
392 return platform.shelltocmdexe( # pytype: disable=module-attr
54f4d094bab1 procutil: suppress pytype warnings around windows-only attributes
Augie Fackler <augie@google.com>
parents: 43165
diff changeset
393 cmd, shellenviron(env)
54f4d094bab1 procutil: suppress pytype warnings around windows-only attributes
Augie Fackler <augie@google.com>
parents: 43165
diff changeset
394 )
39662
50f46b771921 py3: partially fix pager spawning on Windows
Matt Harbison <matt_harbison@yahoo.com>
parents: 38526
diff changeset
395
50f46b771921 py3: partially fix pager spawning on Windows
Matt Harbison <matt_harbison@yahoo.com>
parents: 38526
diff changeset
396 tonativestr = encoding.strfromlocal
38491
72286f9e324f procutil: add a shim for translating shell commands to native commands
Matt Harbison <matt_harbison@yahoo.com>
parents: 38454
diff changeset
397 else:
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diff changeset
398
38491
72286f9e324f procutil: add a shim for translating shell commands to native commands
Matt Harbison <matt_harbison@yahoo.com>
parents: 38454
diff changeset
399 def shelltonative(cmd, env):
72286f9e324f procutil: add a shim for translating shell commands to native commands
Matt Harbison <matt_harbison@yahoo.com>
parents: 38454
diff changeset
400 return cmd
72286f9e324f procutil: add a shim for translating shell commands to native commands
Matt Harbison <matt_harbison@yahoo.com>
parents: 38454
diff changeset
401
39662
50f46b771921 py3: partially fix pager spawning on Windows
Matt Harbison <matt_harbison@yahoo.com>
parents: 38526
diff changeset
402 tonativestr = pycompat.identity
50f46b771921 py3: partially fix pager spawning on Windows
Matt Harbison <matt_harbison@yahoo.com>
parents: 38526
diff changeset
403
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
404
39662
50f46b771921 py3: partially fix pager spawning on Windows
Matt Harbison <matt_harbison@yahoo.com>
parents: 38526
diff changeset
405 def tonativeenv(env):
50f46b771921 py3: partially fix pager spawning on Windows
Matt Harbison <matt_harbison@yahoo.com>
parents: 38526
diff changeset
406 '''convert the environment from bytes to strings suitable for Popen(), etc.
50f46b771921 py3: partially fix pager spawning on Windows
Matt Harbison <matt_harbison@yahoo.com>
parents: 38526
diff changeset
407 '''
50f46b771921 py3: partially fix pager spawning on Windows
Matt Harbison <matt_harbison@yahoo.com>
parents: 38526
diff changeset
408 return pycompat.rapply(tonativestr, env)
50f46b771921 py3: partially fix pager spawning on Windows
Matt Harbison <matt_harbison@yahoo.com>
parents: 38526
diff changeset
409
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
410
31108
3f8f53190d6a chg: deduplicate error handling of ui.system()
Yuya Nishihara <yuya@tcha.org>
parents: 31074
diff changeset
411 def system(cmd, environ=None, cwd=None, out=None):
1882
c0320567931f merge util.esystem and util.system.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1880
diff changeset
412 '''enhanced shell command execution.
c0320567931f merge util.esystem and util.system.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1880
diff changeset
413 run with environment maybe modified, maybe in different dir.
508
42a660abaf75 [PATCH] Harden os.system
mpm@selenic.com
parents: 464
diff changeset
414
11469
c37f35d7f2f5 http: deliver hook output to client
Maxim Khitrov <mkhitrov@gmail.com>
parents: 11297
diff changeset
415 if out is specified, it is assumed to be a file-like object that has a
c37f35d7f2f5 http: deliver hook output to client
Maxim Khitrov <mkhitrov@gmail.com>
parents: 11297
diff changeset
416 write() method. stdout and stderr will be redirected to out.'''
13439
d724a69309e0 util: flush stdout before calling external processes
Mads Kiilerich <mads@kiilerich.com>
parents: 13400
diff changeset
417 try:
30473
39d13b8c101d py3: bulk replace sys.stdin/out/err by util's
Yuya Nishihara <yuya@tcha.org>
parents: 30472
diff changeset
418 stdout.flush()
13439
d724a69309e0 util: flush stdout before calling external processes
Mads Kiilerich <mads@kiilerich.com>
parents: 13400
diff changeset
419 except Exception:
d724a69309e0 util: flush stdout before calling external processes
Mads Kiilerich <mads@kiilerich.com>
parents: 13400
diff changeset
420 pass
32886
19b0fd4b5570 plan9: drop py26 hacks
Matt Harbison <matt_harbison@yahoo.com>
parents: 32816
diff changeset
421 env = shellenviron(environ)
36793
eca1051e6c22 util: add public isstdin/isstdout() functions
Yuya Nishihara <yuya@tcha.org>
parents: 36791
diff changeset
422 if out is None or isstdout(out):
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
423 rc = subprocess.call(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
424 tonativestr(cmd),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
425 shell=True,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
426 close_fds=closefds,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
427 env=tonativeenv(env),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
428 cwd=pycompat.rapply(tonativestr, cwd),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
429 )
11469
c37f35d7f2f5 http: deliver hook output to client
Maxim Khitrov <mkhitrov@gmail.com>
parents: 11297
diff changeset
430 else:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
431 proc = subprocess.Popen(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
432 tonativestr(cmd),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
433 shell=True,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
434 close_fds=closefds,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
435 env=tonativeenv(env),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
436 cwd=pycompat.rapply(tonativestr, cwd),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
437 stdout=subprocess.PIPE,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
438 stderr=subprocess.STDOUT,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
439 )
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
440 for line in iter(proc.stdout.readline, b''):
32886
19b0fd4b5570 plan9: drop py26 hacks
Matt Harbison <matt_harbison@yahoo.com>
parents: 32816
diff changeset
441 out.write(line)
19b0fd4b5570 plan9: drop py26 hacks
Matt Harbison <matt_harbison@yahoo.com>
parents: 32816
diff changeset
442 proc.wait()
19b0fd4b5570 plan9: drop py26 hacks
Matt Harbison <matt_harbison@yahoo.com>
parents: 32816
diff changeset
443 rc = proc.returncode
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
444 if pycompat.sysplatform == b'OpenVMS' and rc & 1:
32886
19b0fd4b5570 plan9: drop py26 hacks
Matt Harbison <matt_harbison@yahoo.com>
parents: 32816
diff changeset
445 rc = 0
9517
4368f582c806 util.system: Use subprocess instead of os.system
Mads Kiilerich <mads@kiilerich.com>
parents: 9508
diff changeset
446 return rc
1880
05c7d75be925 fix broken environment save/restore when a hook runs.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1877
diff changeset
447
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
448
43912
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
449 _is_gui = None
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
450
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
451
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
452 def _gui():
6007
090b1a665901 filemerge: add config item for GUI tools
Matt Mackall <mpm@selenic.com>
parents: 6006
diff changeset
453 '''Are we running in a GUI?'''
34647
dacfcdd8b94e codemod: use pycompat.isdarwin
Jun Wu <quark@fb.com>
parents: 34646
diff changeset
454 if pycompat.isdarwin:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
455 if b'SSH_CONNECTION' in encoding.environ:
13734
16118b4859a1 util: add Mac-specific check whether we're in a GUI session (issue2553)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13439
diff changeset
456 # handle SSH access to a box where the user is logged in
16118b4859a1 util: add Mac-specific check whether we're in a GUI session (issue2553)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13439
diff changeset
457 return False
16118b4859a1 util: add Mac-specific check whether we're in a GUI session (issue2553)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13439
diff changeset
458 elif getattr(osutil, 'isgui', None):
16118b4859a1 util: add Mac-specific check whether we're in a GUI session (issue2553)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13439
diff changeset
459 # check if a CoreGraphics session is available
16118b4859a1 util: add Mac-specific check whether we're in a GUI session (issue2553)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13439
diff changeset
460 return osutil.isgui()
16118b4859a1 util: add Mac-specific check whether we're in a GUI session (issue2553)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13439
diff changeset
461 else:
16118b4859a1 util: add Mac-specific check whether we're in a GUI session (issue2553)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13439
diff changeset
462 # pure build; use a safe default
16118b4859a1 util: add Mac-specific check whether we're in a GUI session (issue2553)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13439
diff changeset
463 return True
16118b4859a1 util: add Mac-specific check whether we're in a GUI session (issue2553)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13439
diff changeset
464 else:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
465 return pycompat.iswindows or encoding.environ.get(b"DISPLAY")
6007
090b1a665901 filemerge: add config item for GUI tools
Matt Mackall <mpm@selenic.com>
parents: 6006
diff changeset
466
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
467
43912
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
468 def gui():
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
469 global _is_gui
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
470 if _is_gui is None:
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
471 _is_gui = _gui()
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
472 return _is_gui
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
473
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
474
10239
8e4be44a676f Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents: 10199
diff changeset
475 def hgcmd():
8e4be44a676f Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents: 10199
diff changeset
476 """Return the command used to execute current hg
8e4be44a676f Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents: 10199
diff changeset
477
8e4be44a676f Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents: 10199
diff changeset
478 This is different from hgexecutable() because on Windows we want
8e4be44a676f Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents: 10199
diff changeset
479 to avoid things opening new shell windows like batch files, so we
8e4be44a676f Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents: 10199
diff changeset
480 get either the python call or current executable.
8e4be44a676f Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents: 10199
diff changeset
481 """
43671
664e24207728 procutil: move mainfrozen() to new resourceutil.py
Martin von Zweigbergk <martinvonz@google.com>
parents: 43657
diff changeset
482 if resourceutil.mainfrozen():
43657
38387f9e4d22 py3: use native string for 'macosx_app'
Martin von Zweigbergk <martinvonz@google.com>
parents: 43656
diff changeset
483 if getattr(sys, 'frozen', None) == 'macosx_app':
27766
198f78a52a2f util: adjust hgcmd() to handle frozen Mercurial on OS X
Matt Harbison <matt_harbison@yahoo.com>
parents: 27765
diff changeset
484 # Env variable set by py2app
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
485 return [encoding.environ[b'EXECUTABLEPATH']]
27766
198f78a52a2f util: adjust hgcmd() to handle frozen Mercurial on OS X
Matt Harbison <matt_harbison@yahoo.com>
parents: 27765
diff changeset
486 else:
30669
10b17ed9b591 py3: replace sys.executable with pycompat.sysexecutable
Pulkit Goyal <7895pulkit@gmail.com>
parents: 30642
diff changeset
487 return [pycompat.sysexecutable]
37115
49d6ba67c93f util: mark platform-specific gethgcmd() as private
Yuya Nishihara <yuya@tcha.org>
parents: 37099
diff changeset
488 return _gethgcmd()
10344
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
489
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
490
10344
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
491 def rundetached(args, condfn):
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
492 """Execute the argument list in a detached process.
10422
600142e7a028 util: fix trailing whitespace found by check-code
Augie Fackler <durin42@gmail.com>
parents: 10344
diff changeset
493
10344
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
494 condfn is a callable which is called repeatedly and should return
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
495 True once the child process is known to have started successfully.
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
496 At this point, the child process PID is returned. If the child
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
497 process fails to start or finishes before condfn() evaluates to
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
498 True, return -1.
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
499 """
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
500 # Windows case is easier because the child process is either
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
501 # successfully starting and validating the condition or exiting
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
502 # on failure. We just poll on its PID. On Unix, if the child
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
503 # process fails to start, it will be left in a zombie state until
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
504 # the parent wait on it, which we cannot do since we expect a long
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
505 # running process on success. Instead we listen for SIGCHLD telling
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
506 # us our child process terminated.
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
507 terminated = set()
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
508
10344
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
509 def handler(signum, frame):
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
510 terminated.add(os.wait())
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
511
10344
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
512 prevhandler = None
14968
b7dbe957585c util: use safehasattr or getattr instead of hasattr
Augie Fackler <durin42@gmail.com>
parents: 14942
diff changeset
513 SIGCHLD = getattr(signal, 'SIGCHLD', None)
b7dbe957585c util: use safehasattr or getattr instead of hasattr
Augie Fackler <durin42@gmail.com>
parents: 14942
diff changeset
514 if SIGCHLD is not None:
b7dbe957585c util: use safehasattr or getattr instead of hasattr
Augie Fackler <durin42@gmail.com>
parents: 14942
diff changeset
515 prevhandler = signal.signal(SIGCHLD, handler)
10344
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
516 try:
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
517 pid = spawndetached(args)
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
518 while not condfn():
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
519 if (pid in terminated or not testpid(pid)) and not condfn():
10344
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
520 return -1
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
521 time.sleep(0.1)
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
522 return pid
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
523 finally:
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
524 if prevhandler is not None:
9501cde4c034 util: make spawndetached() handle subprocess early terminations
Patrick Mezard <pmezard@gmail.com>
parents: 10282
diff changeset
525 signal.signal(signal.SIGCHLD, prevhandler)
38526
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
526
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
527
38526
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
528 @contextlib.contextmanager
41076
8ecb17b7f432 procutil: correct spelling of uninterruptable -> uninterruptible
Kyle Lippincott <spectral@google.com>
parents: 40712
diff changeset
529 def uninterruptible(warn):
38526
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
530 """Inhibit SIGINT handling on a region of code.
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
531
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
532 Note that if this is called in a non-main thread, it turns into a no-op.
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
533
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
534 Args:
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
535 warn: A callable which takes no arguments, and returns True if the
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
536 previous signal handling should be restored.
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
537 """
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
538
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
539 oldsiginthandler = [signal.getsignal(signal.SIGINT)]
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
540 shouldbail = []
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
541
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
542 def disabledsiginthandler(*args):
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
543 if warn():
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
544 signal.signal(signal.SIGINT, oldsiginthandler[0])
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
545 del oldsiginthandler[0]
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
546 shouldbail.append(True)
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
547
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
548 try:
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
549 try:
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
550 signal.signal(signal.SIGINT, disabledsiginthandler)
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
551 except ValueError:
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
552 # wrong thread, oh well, we tried
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
553 del oldsiginthandler[0]
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
554 yield
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
555 finally:
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
556 if oldsiginthandler:
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
557 signal.signal(signal.SIGINT, oldsiginthandler[0])
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
558 if shouldbail:
313a940d49a3 ui: add an uninterruptable context manager that can block SIGINT
Augie Fackler <augie@google.com>
parents: 38525
diff changeset
559 raise KeyboardInterrupt
40497
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
560
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
561
40497
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
562 if pycompat.iswindows:
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
563 # no fork on Windows, but we can create a detached process
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
564 # https://msdn.microsoft.com/en-us/library/windows/desktop/ms684863.aspx
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
565 # No stdlib constant exists for this value
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
566 DETACHED_PROCESS = 0x00000008
40536
1d3bed7d2923 procutil: import concerns about creationflags on Windows from D1701
Boris Feld <boris.feld@octobus.net>
parents: 40498
diff changeset
567 # Following creation flags might create a console GUI window.
1d3bed7d2923 procutil: import concerns about creationflags on Windows from D1701
Boris Feld <boris.feld@octobus.net>
parents: 40498
diff changeset
568 # Using subprocess.CREATE_NEW_CONSOLE might helps.
1d3bed7d2923 procutil: import concerns about creationflags on Windows from D1701
Boris Feld <boris.feld@octobus.net>
parents: 40498
diff changeset
569 # See https://phab.mercurial-scm.org/D1701 for discussion
43478
54f4d094bab1 procutil: suppress pytype warnings around windows-only attributes
Augie Fackler <augie@google.com>
parents: 43165
diff changeset
570 _creationflags = (
54f4d094bab1 procutil: suppress pytype warnings around windows-only attributes
Augie Fackler <augie@google.com>
parents: 43165
diff changeset
571 DETACHED_PROCESS
54f4d094bab1 procutil: suppress pytype warnings around windows-only attributes
Augie Fackler <augie@google.com>
parents: 43165
diff changeset
572 | subprocess.CREATE_NEW_PROCESS_GROUP # pytype: disable=module-attr
54f4d094bab1 procutil: suppress pytype warnings around windows-only attributes
Augie Fackler <augie@google.com>
parents: 43165
diff changeset
573 )
40497
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
574
42496
ca1014ad3de4 procutil: allow callers of runbgcommand to assume the process starts
Augie Fackler <augie@google.com>
parents: 41832
diff changeset
575 def runbgcommand(
43848
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
576 script,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
577 env,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
578 shell=False,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
579 stdout=None,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
580 stderr=None,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
581 ensurestart=True,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
582 record_wait=None,
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
583 ):
40497
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
584 '''Spawn a command without waiting for it to finish.'''
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
585 # we can't use close_fds *and* redirect stdin. I'm not sure that we
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
586 # need to because the detached process has no console connection.
43848
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
587 p = subprocess.Popen(
40498
8fab95aa5280 procutil: port over windows encoding fixes from logtoprocess
Augie Fackler <augie@google.com>
parents: 40497
diff changeset
588 tonativestr(script),
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
589 shell=shell,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
590 env=tonativeenv(env),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
591 close_fds=True,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
592 creationflags=_creationflags,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
593 stdout=stdout,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
594 stderr=stderr,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
595 )
43848
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
596 if record_wait is not None:
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
597 record_wait(p.wait)
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
598
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
599
40497
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
600 else:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
601
42496
ca1014ad3de4 procutil: allow callers of runbgcommand to assume the process starts
Augie Fackler <augie@google.com>
parents: 41832
diff changeset
602 def runbgcommand(
43848
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
603 cmd,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
604 env,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
605 shell=False,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
606 stdout=None,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
607 stderr=None,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
608 ensurestart=True,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
609 record_wait=None,
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43019
diff changeset
610 ):
43848
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
611 '''Spawn a command without waiting for it to finish.
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
612
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
613
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
614 When `record_wait` is not None, the spawned process will not be fully
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
615 detached and the `record_wait` argument will be called with a the
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
616 `Subprocess.wait` function for the spawned process. This is mostly
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
617 useful for developers that need to make sure the spawned process
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
618 finished before a certain point. (eg: writing test)'''
43912
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
619 if pycompat.isdarwin:
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
620 # avoid crash in CoreFoundation in case another thread
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
621 # calls gui() while we're calling fork().
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
622 gui()
a89381e04c58 procutil: try and avoid angering CoreFoundation on macOS
Augie Fackler <augie@google.com>
parents: 43862
diff changeset
623
40497
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
624 # double-fork to completely detach from the parent process
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
625 # based on http://code.activestate.com/recipes/278731
43848
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
626 if record_wait is None:
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
627 pid = os.fork()
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
628 if pid:
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
629 if not ensurestart:
44781
ed684a82e29b procutil: always waiting on child processes to prevent zombies with 'hg serve'
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43912
diff changeset
630 # Even though we're not waiting on the child process,
ed684a82e29b procutil: always waiting on child processes to prevent zombies with 'hg serve'
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43912
diff changeset
631 # we still must call waitpid() on it at some point so
ed684a82e29b procutil: always waiting on child processes to prevent zombies with 'hg serve'
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43912
diff changeset
632 # it's not a zombie/defunct. This is especially relevant for
ed684a82e29b procutil: always waiting on child processes to prevent zombies with 'hg serve'
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43912
diff changeset
633 # chg since the parent process won't die anytime soon.
ed684a82e29b procutil: always waiting on child processes to prevent zombies with 'hg serve'
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43912
diff changeset
634 # We use a thread to make the overhead tiny.
ed684a82e29b procutil: always waiting on child processes to prevent zombies with 'hg serve'
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43912
diff changeset
635 def _do_wait():
ed684a82e29b procutil: always waiting on child processes to prevent zombies with 'hg serve'
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43912
diff changeset
636 os.waitpid(pid, 0)
44812
79f6f856c53f formatting: add missing newline
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44781
diff changeset
637
44781
ed684a82e29b procutil: always waiting on child processes to prevent zombies with 'hg serve'
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43912
diff changeset
638 threading.Thread(target=_do_wait, daemon=True).start()
43848
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
639 return
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
640 # Parent process
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
641 (_pid, status) = os.waitpid(pid, 0)
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
642 if os.WIFEXITED(status):
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
643 returncode = os.WEXITSTATUS(status)
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
644 else:
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
645 returncode = -(os.WTERMSIG(status))
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
646 if returncode != 0:
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
647 # The child process's return code is 0 on success, an errno
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
648 # value on failure, or 255 if we don't have a valid errno
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
649 # value.
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
650 #
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
651 # (It would be slightly nicer to return the full exception info
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
652 # over a pipe as the subprocess module does. For now it
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
653 # doesn't seem worth adding that complexity here, though.)
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
654 if returncode == 255:
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
655 returncode = errno.EINVAL
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
656 raise OSError(
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
657 returncode,
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
658 b'error running %r: %s'
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
659 % (cmd, os.strerror(returncode)),
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
660 )
42496
ca1014ad3de4 procutil: allow callers of runbgcommand to assume the process starts
Augie Fackler <augie@google.com>
parents: 41832
diff changeset
661 return
40497
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
662
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
663 returncode = 255
3fbfbc8c9f82 remotefilelog: transplant runbgcommand to procutil
Augie Fackler <augie@google.com>
parents: 39840
diff changeset
664 try:
43848
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
665 if record_wait is None:
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
666 # Start a new session
15a6c6783060 procutil: add a option to not fully detach background process
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43165
diff changeset
667 os.setsid()
40497
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668
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669 stdin = open(os.devnull, b'r')
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670 if stdout is None:
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671 stdout = open(os.devnull, b'w')
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672 if stderr is None:
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673 stderr = open(os.devnull, b'w')
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674
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675 # connect stdin to devnull to make sure the subprocess can't
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676 # muck up that stream for mercurial.
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677 p = subprocess.Popen(
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678 cmd,
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679 shell=shell,
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680 env=env,
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681 close_fds=True,
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682 stdin=stdin,
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683 stdout=stdout,
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684 stderr=stderr,
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685 )
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686 if record_wait is not None:
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687 record_wait(p.wait)
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688 returncode = 0
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689 except EnvironmentError as ex:
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690 returncode = ex.errno & 0xFF
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691 if returncode == 0:
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692 # This shouldn't happen, but just in case make sure the
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693 # return code is never 0 here.
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694 returncode = 255
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695 except Exception:
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696 returncode = 255
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697 finally:
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698 # mission accomplished, this child needs to exit and not
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699 # continue the hg process here.
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700 if record_wait is None:
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701 os._exit(returncode)