annotate mercurial/vfs.py @ 51883:1edac12af730

vfs: modernize the detection of the main thread There weren't a lot of good choices when py27 was supported, but starting with py34, `threading.main_thread()` is available. This gets us away from an undocumented, internal symbol, and drops a pytype suppression statement. It is also apparently no longer reliable after a process fork.[1][2] [1] https://stackoverflow.com/a/23207116 [2] https://github.com/python/cpython/blob/v3.6.3/Lib/threading.py#L1334
author Matt Harbison <matt_harbison@yahoo.com>
date Thu, 19 Sep 2024 21:03:10 -0400
parents f4733654f144
children f79f98733a5b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # vfs.py - Mercurial 'vfs' classes
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2 #
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3 # Copyright Olivia Mackall <olivia@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import annotations
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9
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10 import contextlib
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11 import os
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12 import shutil
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13 import stat
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14 import threading
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15
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16 from typing import (
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17 Optional,
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18 )
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19
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20 from .i18n import _
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21 from . import (
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22 encoding,
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23 error,
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24 pathutil,
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25 pycompat,
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26 util,
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27 )
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28
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29
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30 def _avoidambig(path: bytes, oldstat):
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31 """Avoid file stat ambiguity forcibly
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32
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33 This function causes copying ``path`` file, if it is owned by
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34 another (see issue5418 and issue5584 for detail).
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35 """
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36
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37 def checkandavoid():
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38 newstat = util.filestat.frompath(path)
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39 # return whether file stat ambiguity is (already) avoided
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40 return not newstat.isambig(oldstat) or newstat.avoidambig(path, oldstat)
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41
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42 if not checkandavoid():
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43 # simply copy to change owner of path to get privilege to
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44 # advance mtime (see issue5418)
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45 util.rename(util.mktempcopy(path), path)
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46 checkandavoid()
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47
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48
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49 class abstractvfs:
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50 """Abstract base class; cannot be instantiated"""
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51
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52 # default directory separator for vfs
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53 #
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54 # Other vfs code always use `/` and this works fine because python file API
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55 # abstract the use of `/` and make it work transparently. For consistency
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56 # vfs will always use `/` when joining. This avoid some confusion in
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57 # encoded vfs (see issue6546)
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58 _dir_sep = b'/'
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59
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60 def __init__(self, *args, **kwargs):
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61 '''Prevent instantiation; don't call this from subclasses.'''
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62 raise NotImplementedError('attempted instantiating ' + str(type(self)))
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63
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64 # TODO: type return, which is util.posixfile wrapped by a proxy
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65 def __call__(self, path: bytes, mode: bytes = b'rb', **kwargs):
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66 raise NotImplementedError
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67
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68 def _auditpath(self, path: bytes, mode: bytes):
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69 raise NotImplementedError
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70
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71 def join(self, path: Optional[bytes], *insidef: bytes) -> bytes:
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72 raise NotImplementedError
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73
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74 def tryread(self, path: bytes) -> bytes:
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75 '''gracefully return an empty string for missing files'''
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76 try:
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77 return self.read(path)
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78 except FileNotFoundError:
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79 pass
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80 return b""
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81
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82 def tryreadlines(self, path: bytes, mode: bytes = b'rb'):
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83 '''gracefully return an empty array for missing files'''
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84 try:
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85 return self.readlines(path, mode=mode)
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86 except FileNotFoundError:
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87 pass
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88 return []
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89
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90 @util.propertycache
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91 def open(self):
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92 """Open ``path`` file, which is relative to vfs root.
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93
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94 Newly created directories are marked as "not to be indexed by
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95 the content indexing service", if ``notindexed`` is specified
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96 for "write" mode access.
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97 """
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98 return self.__call__
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99
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100 def read(self, path: bytes) -> bytes:
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101 with self(path, b'rb') as fp:
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102 return fp.read()
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103
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104 def readlines(self, path: bytes, mode: bytes = b'rb'):
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105 with self(path, mode=mode) as fp:
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106 return fp.readlines()
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107
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108 def write(
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109 self, path: bytes, data: bytes, backgroundclose=False, **kwargs
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110 ) -> int:
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111 with self(path, b'wb', backgroundclose=backgroundclose, **kwargs) as fp:
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112 return fp.write(data)
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113
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114 def writelines(
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115 self, path: bytes, data: bytes, mode: bytes = b'wb', notindexed=False
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116 ) -> None:
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117 with self(path, mode=mode, notindexed=notindexed) as fp:
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118 return fp.writelines(data)
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119
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120 def append(self, path: bytes, data: bytes) -> int:
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121 with self(path, b'ab') as fp:
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122 return fp.write(data)
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Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 14090
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123
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124 def basename(self, path: bytes) -> bytes:
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125 """return base element of a path (as os.path.basename would do)
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parents: 25739
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126
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127 This exists to allow handling of strange encoding if needed."""
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128 return os.path.basename(path)
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129
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130 def chmod(self, path: bytes, mode: int) -> None:
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131 return os.chmod(self.join(path), mode)
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132
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133 def dirname(self, path: bytes) -> bytes:
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134 """return dirname element of a path (as os.path.dirname would do)
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135
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136 This exists to allow handling of strange encoding if needed."""
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137 return os.path.dirname(path)
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138
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139 def exists(self, path: Optional[bytes] = None) -> bool:
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140 return os.path.exists(self.join(path))
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141
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142 def fstat(self, fp):
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143 return util.fstat(fp)
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144
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145 def isdir(self, path: Optional[bytes] = None) -> bool:
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146 return os.path.isdir(self.join(path))
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147
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148 def isfile(self, path: Optional[bytes] = None) -> bool:
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149 return os.path.isfile(self.join(path))
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150
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151 def islink(self, path: Optional[bytes] = None) -> bool:
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parents: 18948
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152 return os.path.islink(self.join(path))
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153
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154 def isfileorlink(self, path: Optional[bytes] = None) -> bool:
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155 """return whether path is a regular file or a symlink
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156
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157 Unlike isfile, this doesn't follow symlinks."""
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parents: 26836
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158 try:
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159 st = self.lstat(path)
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160 except OSError:
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161 return False
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parents: 26836
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162 mode = st.st_mode
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163 return stat.S_ISREG(mode) or stat.S_ISLNK(mode)
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164
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165 def _join(self, *paths: bytes) -> bytes:
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166 root_idx = 0
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parents: 47443
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167 for idx, p in enumerate(paths):
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168 if os.path.isabs(p) or p.startswith(self._dir_sep):
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169 root_idx = idx
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170 if root_idx != 0:
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171 paths = paths[root_idx:]
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172 paths = [p for p in paths if p]
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173 return self._dir_sep.join(paths)
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174
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175 def reljoin(self, *paths: bytes) -> bytes:
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176 """join various elements of a path together (as os.path.join would do)
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177
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178 The vfs base is not injected so that path stay relative. This exists
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179 to allow handling of strange encoding if needed."""
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180 return self._join(*paths)
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181
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182 def split(self, path: bytes):
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183 """split top-most element of a path (as os.path.split would do)
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184
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185 This exists to allow handling of strange encoding if needed."""
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186 return os.path.split(path)
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187
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188 def lexists(self, path: Optional[bytes] = None) -> bool:
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189 return os.path.lexists(self.join(path))
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190
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191 def lstat(self, path: Optional[bytes] = None):
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192 return os.lstat(self.join(path))
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193
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194 def is_mmap_safe(self, path: Optional[bytes] = None) -> bool:
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195 """return True if it is safe to read a file content as mmap
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196
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197 This focus on the file system aspect of such safety, the application
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198 logic around that file is not taken into account, so caller need to
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199 make sure the file won't be truncated in a way that will create SIGBUS
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diff changeset
200 on access.
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201
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diff changeset
202
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diff changeset
203 The initial motivation for this logic is that if mmap is used on NFS
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204 and somebody deletes the mapped file (e.g. by renaming on top of it),
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205 then you get SIGBUS, which can be pretty disruptive: we get core dump
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diff changeset
206 reports, and the process terminates without writing to the blackbox.
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207
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208 Instead in this situation we prefer to read the file normally.
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209 The risk of ESTALE in the middle of the read remains, but it's
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210 smaller because we read sooner and the error should be reported
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211 just as any other error.
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212
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213 Note that python standard library does not offer the necessary function
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214 to detect the file stem bits. So this detection rely on compiled bits
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diff changeset
215 and is not available in pure python.
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216 """
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217 # XXX Since we already assume a vfs to address a consistent file system
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218 # in other location, we could determine the fstype once for the root
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219 # and cache that value.
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220 fstype = util.getfstype(self.join(path))
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diff changeset
221 return fstype is not None and fstype != b'nfs'
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222
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223 def listdir(self, path: Optional[bytes] = None):
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parents: 21716
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224 return os.listdir(self.join(path))
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225
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226 def makedir(self, path: Optional[bytes] = None, notindexed=True):
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227 return util.makedir(self.join(path), notindexed)
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228
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229 def makedirs(
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230 self, path: Optional[bytes] = None, mode: Optional[int] = None
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231 ):
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232 return util.makedirs(self.join(path), mode)
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233
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234 def makelock(self, info, path: bytes):
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parents: 20086
diff changeset
235 return util.makelock(info, self.join(path))
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236
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diff changeset
237 def mkdir(self, path: Optional[bytes] = None):
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parents: 17681
diff changeset
238 return os.mkdir(self.join(path))
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parents: 17681
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239
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diff changeset
240 def mkstemp(
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diff changeset
241 self,
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parents: 49306
diff changeset
242 suffix: bytes = b'',
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parents: 49306
diff changeset
243 prefix: bytes = b'tmp',
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parents: 49306
diff changeset
244 dir: Optional[bytes] = None,
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Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
245 ):
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parents: 43025
diff changeset
246 fd, name = pycompat.mkstemp(
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parents: 43025
diff changeset
247 suffix=suffix, prefix=prefix, dir=self.join(dir)
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Augie Fackler <augie@google.com>
parents: 43025
diff changeset
248 )
20980
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20862
diff changeset
249 dname, fname = util.split(name)
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20862
diff changeset
250 if dir:
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20862
diff changeset
251 return fd, os.path.join(dir, fname)
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20862
diff changeset
252 else:
6fb4c94ae300 vfs: add "mkstemp()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20862
diff changeset
253 return fd, fname
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20862
diff changeset
254
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diff changeset
255 def readdir(self, path: Optional[bytes] = None, stat=None, skip=None):
32208
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Yuya Nishihara <yuya@tcha.org>
parents: 31644
diff changeset
256 return util.listdir(self.join(path), stat, skip)
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parents: 17726
diff changeset
257
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diff changeset
258 def readlock(self, path: bytes) -> bytes:
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20086
diff changeset
259 return util.readlock(self.join(path))
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20086
diff changeset
260
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diff changeset
261 def rename(self, src: bytes, dst: bytes, checkambig=False):
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parents: 29341
diff changeset
262 """Rename from src to dst
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parents: 29341
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263
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29341
diff changeset
264 checkambig argument is used with util.filestat, and is useful
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parents: 29341
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265 only if destination file is guarded by any lock
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parents: 29341
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266 (e.g. repo.lock or repo.wlock).
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
267
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
268 To avoid file stat ambiguity forcibly, checkambig=True involves
d1db7af81548 vfs: add explanation about cost of checkambig=True in corner case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
269 copying ``src`` file, if it is owned by another. Therefore, use
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
270 checkambig=True only in limited cases (see also issue5418 and
d1db7af81548 vfs: add explanation about cost of checkambig=True in corner case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
271 issue5584 for detail).
29367
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29341
diff changeset
272 """
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
273 self._auditpath(dst, b'w')
32748
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 32747
diff changeset
274 srcpath = self.join(src)
29203
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29202
diff changeset
275 dstpath = self.join(dst)
32772
7ad95626f6a7 filestat: move __init__ to frompath constructor
Siddharth Agarwal <sid0@fb.com>
parents: 32748
diff changeset
276 oldstat = checkambig and util.filestat.frompath(dstpath)
29203
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29202
diff changeset
277 if oldstat and oldstat.stat:
33281
6af0f023d014 vfs: replace avoiding ambiguity in abstractvfs.rename with _avoidambig
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33280
diff changeset
278 ret = util.rename(srcpath, dstpath)
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33280
diff changeset
279 _avoidambig(dstpath, oldstat)
29203
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29202
diff changeset
280 return ret
32748
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 32747
diff changeset
281 return util.rename(srcpath, dstpath)
18948
2f05fa162316 localrepo: use "vfs.rename()" instead of "util.rename()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 18945
diff changeset
282
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diff changeset
283 def readlink(self, path: bytes) -> bytes:
39904
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Matt Harbison <matt_harbison@yahoo.com>
parents: 39464
diff changeset
284 return util.readlink(self.join(path))
18950
647e3b0c8751 localrepo: use "vfs.readlink()" instead of "os.readlink()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 18949
diff changeset
285
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diff changeset
286 def removedirs(self, path: Optional[bytes] = None):
45942
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Augie Fackler <raf@durin42.com>
parents: 44566
diff changeset
287 """Remove a leaf directory and all empty intermediate ones"""
24693
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24689
diff changeset
288 return util.removedirs(self.join(path))
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24689
diff changeset
289
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diff changeset
290 def rmdir(self, path: Optional[bytes] = None):
39464
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 38493
diff changeset
291 """Remove an empty directory."""
3dd34b401bc2 merge: use vfs methods for I/O
Gregory Szorc <gregory.szorc@gmail.com>
parents: 38493
diff changeset
292 return os.rmdir(self.join(path))
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 38493
diff changeset
293
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diff changeset
294 def rmtree(
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diff changeset
295 self, path: Optional[bytes] = None, ignore_errors=False, forcibly=False
51679
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Matt Harbison <matt_harbison@yahoo.com>
parents: 51652
diff changeset
296 ) -> None:
24689
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
297 """Remove a directory tree recursively
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
298
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parents: 24635
diff changeset
299 If ``forcibly``, this tries to remove READ-ONLY files, too.
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
300 """
ca3a90096c95 vfs: add rmtree
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
301 if forcibly:
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parents: 43025
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302
50754
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parents: 50365
diff changeset
303 def onexc(function, path, excinfo):
24689
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
304 if function is not os.remove:
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
305 raise
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parents: 24635
diff changeset
306 # read-only files cannot be unlinked under Windows
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parents: 24635
diff changeset
307 s = os.stat(path)
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
308 if (s.st_mode & stat.S_IWRITE) != 0:
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
309 raise
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
310 os.chmod(path, stat.S_IMODE(s.st_mode) | stat.S_IWRITE)
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
311 os.remove(path)
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parents: 43025
diff changeset
312
24689
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parents: 24635
diff changeset
313 else:
50754
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Mads Kiilerich <mads@kiilerich.com>
parents: 50365
diff changeset
314 onexc = None
f173c2c23289 vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
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parents: 50365
diff changeset
315 try:
f173c2c23289 vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
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parents: 50365
diff changeset
316 # pytype: disable=wrong-keyword-args
f173c2c23289 vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
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parents: 50365
diff changeset
317 return shutil.rmtree(
f173c2c23289 vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
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parents: 50365
diff changeset
318 self.join(path), ignore_errors=ignore_errors, onexc=onexc
f173c2c23289 vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
Mads Kiilerich <mads@kiilerich.com>
parents: 50365
diff changeset
319 )
f173c2c23289 vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
Mads Kiilerich <mads@kiilerich.com>
parents: 50365
diff changeset
320 # pytype: enable=wrong-keyword-args
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parents: 50365
diff changeset
321 except TypeError: # onexc was introduced in Python 3.12
f173c2c23289 vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
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parents: 50365
diff changeset
322 return shutil.rmtree(
f173c2c23289 vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
Mads Kiilerich <mads@kiilerich.com>
parents: 50365
diff changeset
323 self.join(path), ignore_errors=ignore_errors, onerror=onexc
f173c2c23289 vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
Mads Kiilerich <mads@kiilerich.com>
parents: 50365
diff changeset
324 )
24689
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24635
diff changeset
325
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diff changeset
326 def setflags(self, path: bytes, l: bool, x: bool):
18951
d13916a00b7e localrepo: use "vfs.setflags()" instead of "util.setflags()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 18950
diff changeset
327 return util.setflags(self.join(path), l, x)
d13916a00b7e localrepo: use "vfs.setflags()" instead of "util.setflags()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 18950
diff changeset
328
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diff changeset
329 def stat(self, path: Optional[bytes] = None):
17726
7cb7e17c23b2 store: invoke "os.stat()" for "createmode" initialization via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17725
diff changeset
330 return os.stat(self.join(path))
7cb7e17c23b2 store: invoke "os.stat()" for "createmode" initialization via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17725
diff changeset
331
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diff changeset
332 def unlink(self, path: Optional[bytes] = None):
19895
37c0d93fb166 bookmarks: use "vfs.unlink()" instead of "util.unlink()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 19655
diff changeset
333 return util.unlink(self.join(path))
37c0d93fb166 bookmarks: use "vfs.unlink()" instead of "util.unlink()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 19655
diff changeset
334
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diff changeset
335 def tryunlink(self, path: Optional[bytes] = None):
31542
fad440db3565 vfs: add tryunlink method
Ryan McElroy <rmcelroy@fb.com>
parents: 31309
diff changeset
336 """Attempt to remove a file, ignoring missing file errors."""
51430
187c5769a629 vfs: have tryunlink tell what it did
Georges Racinet <georges.racinet@octobus.net>
parents: 50929
diff changeset
337 return util.tryunlink(self.join(path))
31542
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Ryan McElroy <rmcelroy@fb.com>
parents: 31309
diff changeset
338
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diff changeset
339 def unlinkpath(
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
340 self, path: Optional[bytes] = None, ignoremissing=False, rmdir=True
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
341 ):
43076
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Augie Fackler <augie@google.com>
parents: 43025
diff changeset
342 return util.unlinkpath(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
343 self.join(path), ignoremissing=ignoremissing, rmdir=rmdir
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
344 )
21716
90f9be5adade vfs: add unlinkpath to vfs
Chinmay Joshi <c@chinmayjoshi.com>
parents: 21563
diff changeset
345
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diff changeset
346 def utime(self, path: Optional[bytes] = None, t=None):
19896
af03279c766a bookmarks: use "vfs.utime()" instead of "os.utime()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 19895
diff changeset
347 return os.utime(self.join(path), t)
af03279c766a bookmarks: use "vfs.utime()" instead of "os.utime()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 19895
diff changeset
348
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diff changeset
349 def walk(self, path: Optional[bytes] = None, onerror=None):
24725
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
350 """Yield (dirpath, dirs, files) tuple for each directories under path
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
351
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
352 ``dirpath`` is relative one from the root of this vfs. This
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
353 uses ``os.sep`` as path separator, even you specify POSIX
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
354 style ``path``.
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
355
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
356 "The root of this vfs" is represented as empty ``dirpath``.
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
357 """
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
358 root = os.path.normpath(self.join(None))
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
359 # when dirpath == root, dirpath[prefixlen:] becomes empty
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
360 # because len(dirpath) < prefixlen.
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
361 prefixlen = len(pathutil.normasprefix(root))
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
362 for dirpath, dirs, files in os.walk(self.join(path), onerror=onerror):
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
363 yield (dirpath[prefixlen:], dirs, files)
ee751d47cf2c vfs: add walk
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 24723
diff changeset
364
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
365 @contextlib.contextmanager
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
366 def backgroundclosing(self, ui, expectedcount=-1):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
367 """Allow files to be closed asynchronously.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
368
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
369 When this context manager is active, ``backgroundclose`` can be passed
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
370 to ``__call__``/``open`` to result in the file possibly being closed
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
371 asynchronously, on a background thread.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
372 """
35426
60f2a215faa7 workers: don't use backgroundfilecloser in threads
Wojciech Lis <wlis@fb.com>
parents: 34645
diff changeset
373 # Sharing backgroundfilecloser between threads is complex and using
60f2a215faa7 workers: don't use backgroundfilecloser in threads
Wojciech Lis <wlis@fb.com>
parents: 34645
diff changeset
374 # multiple instances puts us at risk of running out of file descriptors
60f2a215faa7 workers: don't use backgroundfilecloser in threads
Wojciech Lis <wlis@fb.com>
parents: 34645
diff changeset
375 # only allow to use backgroundfilecloser when in main thread.
51883
1edac12af730 vfs: modernize the detection of the main thread
Matt Harbison <matt_harbison@yahoo.com>
parents: 51863
diff changeset
376 if threading.current_thread() is not threading.main_thread():
35426
60f2a215faa7 workers: don't use backgroundfilecloser in threads
Wojciech Lis <wlis@fb.com>
parents: 34645
diff changeset
377 yield
60f2a215faa7 workers: don't use backgroundfilecloser in threads
Wojciech Lis <wlis@fb.com>
parents: 34645
diff changeset
378 return
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
379 vfs = getattr(self, 'vfs', self)
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
380 if getattr(vfs, '_backgroundfilecloser', None):
29389
98e8313dcd9e i18n: translate abort messages
liscju <piotr.listkiewicz@gmail.com>
parents: 29373
diff changeset
381 raise error.Abort(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
382 _(b'can only have 1 active background file closer')
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
383 )
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
384
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
385 with backgroundfilecloser(ui, expectedcount=expectedcount) as bfc:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
386 try:
43482
fc19f8ab8199 vfs: suppress some pytype errors around us using a private attribute
Augie Fackler <augie@google.com>
parents: 43468
diff changeset
387 vfs._backgroundfilecloser = (
fc19f8ab8199 vfs: suppress some pytype errors around us using a private attribute
Augie Fackler <augie@google.com>
parents: 43468
diff changeset
388 bfc # pytype: disable=attribute-error
fc19f8ab8199 vfs: suppress some pytype errors around us using a private attribute
Augie Fackler <augie@google.com>
parents: 43468
diff changeset
389 )
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
390 yield bfc
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
391 finally:
43482
fc19f8ab8199 vfs: suppress some pytype errors around us using a private attribute
Augie Fackler <augie@google.com>
parents: 43468
diff changeset
392 vfs._backgroundfilecloser = (
fc19f8ab8199 vfs: suppress some pytype errors around us using a private attribute
Augie Fackler <augie@google.com>
parents: 43468
diff changeset
393 None # pytype: disable=attribute-error
fc19f8ab8199 vfs: suppress some pytype errors around us using a private attribute
Augie Fackler <augie@google.com>
parents: 43468
diff changeset
394 )
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
395
47443
9ab54aa56982 vfs: add a `register_file` method on the vfs class
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47178
diff changeset
396 def register_file(self, path):
9ab54aa56982 vfs: add a `register_file` method on the vfs class
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47178
diff changeset
397 """generic hook point to lets fncache steer its stew"""
9ab54aa56982 vfs: add a `register_file` method on the vfs class
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47178
diff changeset
398
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
399
17649
f65c6a5f256c scmutil: rename classes from "opener" to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17561
diff changeset
400 class vfs(abstractvfs):
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44566
diff changeset
401 """Operate files relative to a base directory
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
402
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
403 This class is used to hide the details of COW semantics and
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
404 remote file access from higher level code.
33649
377e8ddaebef pathauditor: disable cache of audited paths by default (issue5628)
Yuya Nishihara <yuya@tcha.org>
parents: 33435
diff changeset
405
377e8ddaebef pathauditor: disable cache of audited paths by default (issue5628)
Yuya Nishihara <yuya@tcha.org>
parents: 33435
diff changeset
406 'cacheaudited' should be enabled only if (a) vfs object is short-lived, or
377e8ddaebef pathauditor: disable cache of audited paths by default (issue5628)
Yuya Nishihara <yuya@tcha.org>
parents: 33435
diff changeset
407 (b) the base directory is managed by hg and considered sort-of append-only.
377e8ddaebef pathauditor: disable cache of audited paths by default (issue5628)
Yuya Nishihara <yuya@tcha.org>
parents: 33435
diff changeset
408 See pathutil.pathauditor() for details.
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44566
diff changeset
409 """
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
410
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
411 def __init__(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
412 self,
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
413 base: bytes,
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
414 audit=True,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
415 cacheaudited=False,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
416 expandpath=False,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
417 realpath=False,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
418 ):
18945
e75b72fffdfe vfs: split "expand" into "realpath"/"expandpath" to apply each separately
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 18900
diff changeset
419 if expandpath:
e75b72fffdfe vfs: split "expand" into "realpath"/"expandpath" to apply each separately
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 18900
diff changeset
420 base = util.expandpath(base)
e75b72fffdfe vfs: split "expand" into "realpath"/"expandpath" to apply each separately
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 18900
diff changeset
421 if realpath:
e75b72fffdfe vfs: split "expand" into "realpath"/"expandpath" to apply each separately
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 18900
diff changeset
422 base = os.path.realpath(base)
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
423 self.base = base
33259
6fb5c5096887 vfs: drop the 'mustaudit' API
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 33257
diff changeset
424 self._audit = audit
6fb5c5096887 vfs: drop the 'mustaudit' API
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 33257
diff changeset
425 if audit:
33649
377e8ddaebef pathauditor: disable cache of audited paths by default (issue5628)
Yuya Nishihara <yuya@tcha.org>
parents: 33435
diff changeset
426 self.audit = pathutil.pathauditor(self.base, cached=cacheaudited)
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
427 else:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
428 self.audit = lambda path, mode=None: True
33259
6fb5c5096887 vfs: drop the 'mustaudit' API
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 33257
diff changeset
429 self.createmode = None
6fb5c5096887 vfs: drop the 'mustaudit' API
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 33257
diff changeset
430 self._trustnlink = None
43025
3518da504303 vfs: give all vfs an options attribute by default
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41095
diff changeset
431 self.options = {}
17554
5450c8ad9d98 scmutil: turn opener._audit into a property, mustaudit
Bryan O'Sullivan <bryano@fb.com>
parents: 17248
diff changeset
432
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
433 @util.propertycache
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
434 def _cansymlink(self) -> bool:
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
435 return util.checklink(self.base)
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
436
18192
f9a89bdd64a6 scmutil: don't try to match modes on filesystems without modes (issue3740)
Matt Mackall <mpm@selenic.com>
parents: 17850
diff changeset
437 @util.propertycache
f9a89bdd64a6 scmutil: don't try to match modes on filesystems without modes (issue3740)
Matt Mackall <mpm@selenic.com>
parents: 17850
diff changeset
438 def _chmod(self):
f9a89bdd64a6 scmutil: don't try to match modes on filesystems without modes (issue3740)
Matt Mackall <mpm@selenic.com>
parents: 17850
diff changeset
439 return util.checkexec(self.base)
f9a89bdd64a6 scmutil: don't try to match modes on filesystems without modes (issue3740)
Matt Mackall <mpm@selenic.com>
parents: 17850
diff changeset
440
17763
13070de77c86 vfs: backout fchmod change from 76b73ce0ffac
Matt Mackall <mpm@selenic.com>
parents: 17752
diff changeset
441 def _fixfilemode(self, name):
18192
f9a89bdd64a6 scmutil: don't try to match modes on filesystems without modes (issue3740)
Matt Mackall <mpm@selenic.com>
parents: 17850
diff changeset
442 if self.createmode is None or not self._chmod:
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
443 return
25658
e93036747902 global: mass rewrite to use modern octal syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents: 25629
diff changeset
444 os.chmod(name, self.createmode & 0o666)
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
445
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
446 def _auditpath(self, path, mode) -> None:
40754
34f15db81cf0 vfs: extract the audit path logic into a submethod
Boris Feld <boris.feld@octobus.net>
parents: 39904
diff changeset
447 if self._audit:
41090
c8006a25b845 vfs: makes all audited path relative
Boris Feld <boris.feld@octobus.net>
parents: 40989
diff changeset
448 if os.path.isabs(path) and path.startswith(self.base):
c8006a25b845 vfs: makes all audited path relative
Boris Feld <boris.feld@octobus.net>
parents: 40989
diff changeset
449 path = os.path.relpath(path, self.base)
40754
34f15db81cf0 vfs: extract the audit path logic into a submethod
Boris Feld <boris.feld@octobus.net>
parents: 39904
diff changeset
450 r = util.checkosfilename(path)
34f15db81cf0 vfs: extract the audit path logic into a submethod
Boris Feld <boris.feld@octobus.net>
parents: 39904
diff changeset
451 if r:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
452 raise error.Abort(b"%s: %r" % (r, path))
40754
34f15db81cf0 vfs: extract the audit path logic into a submethod
Boris Feld <boris.feld@octobus.net>
parents: 39904
diff changeset
453 self.audit(path, mode=mode)
34f15db81cf0 vfs: extract the audit path logic into a submethod
Boris Feld <boris.feld@octobus.net>
parents: 39904
diff changeset
454
49909
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
455 def isfileorlink_checkdir(
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
456 self, dircache, path: Optional[bytes] = None
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
457 ) -> bool:
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
458 """return True if the path is a regular file or a symlink and
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
459 the directories along the path are "normal", that is
49912
bc83ebe07bf0 pathauditor: make _checkfs_exists a static method
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49909
diff changeset
460 not symlinks or nested hg repositories.
bc83ebe07bf0 pathauditor: make _checkfs_exists a static method
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49909
diff changeset
461
bc83ebe07bf0 pathauditor: make _checkfs_exists a static method
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49909
diff changeset
462 Ignores the `_audit` setting, and checks the directories regardless.
bc83ebe07bf0 pathauditor: make _checkfs_exists a static method
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49909
diff changeset
463 `dircache` is used to cache the directory checks.
bc83ebe07bf0 pathauditor: make _checkfs_exists a static method
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49909
diff changeset
464 """
49909
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
465 try:
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
466 for prefix in pathutil.finddirs_rev_noroot(util.localpath(path)):
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
467 if prefix in dircache:
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
468 res = dircache[prefix]
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
469 else:
49912
bc83ebe07bf0 pathauditor: make _checkfs_exists a static method
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49909
diff changeset
470 res = pathutil.pathauditor._checkfs_exists(
bc83ebe07bf0 pathauditor: make _checkfs_exists a static method
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49909
diff changeset
471 self.base, prefix, path
bc83ebe07bf0 pathauditor: make _checkfs_exists a static method
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49909
diff changeset
472 )
49909
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
473 dircache[prefix] = res
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
474 if not res:
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
475 return False
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
476 except (OSError, error.Abort):
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
477 return False
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
478 return self.isfileorlink(path)
b7cf91ef03ba merge: skip syntactic path checks in [_checkunknownfile]
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 49574
diff changeset
479
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
480 def __call__(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
481 self,
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
482 path: bytes,
49574
2506c3ac73f4 vfs: make the default opener mode binary
Matt Harbison <matt_harbison@yahoo.com>
parents: 49573
diff changeset
483 mode: bytes = b"rb",
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
484 atomictemp=False,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
485 notindexed=False,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
486 backgroundclose=False,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
487 checkambig=False,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
488 auditpath=True,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
489 makeparentdirs=True,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
490 ):
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44566
diff changeset
491 """Open ``path`` file, which is relative to vfs root.
23370
46265d0f0c7b vfs: add "notindexed" argument to invoke "ensuredir" with it in write mode
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 23368
diff changeset
492
40796
03bca908d9fb vfs: add option to not create parent directories implicitly
Yuya Nishihara <yuya@tcha.org>
parents: 40754
diff changeset
493 By default, parent directories are created as needed. Newly created
03bca908d9fb vfs: add option to not create parent directories implicitly
Yuya Nishihara <yuya@tcha.org>
parents: 40754
diff changeset
494 directories are marked as "not to be indexed by the content indexing
03bca908d9fb vfs: add option to not create parent directories implicitly
Yuya Nishihara <yuya@tcha.org>
parents: 40754
diff changeset
495 service", if ``notindexed`` is specified for "write" mode access.
03bca908d9fb vfs: add option to not create parent directories implicitly
Yuya Nishihara <yuya@tcha.org>
parents: 40754
diff changeset
496 Set ``makeparentdirs=False`` to not create directories implicitly.
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
497
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
498 If ``backgroundclose`` is passed, the file may be closed asynchronously.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
499 It can only be used if the ``self.backgroundclosing()`` context manager
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
500 is active. This should only be specified if the following criteria hold:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
501
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
502 1. There is a potential for writing thousands of files. Unless you
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
503 are writing thousands of files, the performance benefits of
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
504 asynchronously closing files is not realized.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
505 2. Files are opened exactly once for the ``backgroundclosing``
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
506 active duration and are therefore free of race conditions between
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
507 closing a file on a background thread and reopening it. (If the
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
508 file were opened multiple times, there could be unflushed data
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
509 because the original file handle hasn't been flushed/closed yet.)
29202
76f1ea360c7e vfs: make atomictempfile avoid ambiguity of file stat if needed
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29119
diff changeset
510
44566
77d48738b8e0 vfs: fix typo in comment (remove extra "l")
Kyle Lippincott <spectral@google.com>
parents: 43506
diff changeset
511 ``checkambig`` argument is passed to atomictempfile (valid
29367
4e6e280e238f doc: describe detail about checkambig optional argument
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29341
diff changeset
512 only for writing), and is useful only if target file is
4e6e280e238f doc: describe detail about checkambig optional argument
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29341
diff changeset
513 guarded by any lock (e.g. repo.lock or repo.wlock).
33282
d1db7af81548 vfs: add explanation about cost of checkambig=True in corner case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
514
d1db7af81548 vfs: add explanation about cost of checkambig=True in corner case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
515 To avoid file stat ambiguity forcibly, checkambig=True involves
d1db7af81548 vfs: add explanation about cost of checkambig=True in corner case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
516 copying ``path`` file opened in "append" mode (e.g. for
d1db7af81548 vfs: add explanation about cost of checkambig=True in corner case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
517 truncation), if it is owned by another. Therefore, use
d1db7af81548 vfs: add explanation about cost of checkambig=True in corner case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
518 combination of append mode and checkambig=True only in limited
d1db7af81548 vfs: add explanation about cost of checkambig=True in corner case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33281
diff changeset
519 cases (see also issue5418 and issue5584 for detail).
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44566
diff changeset
520 """
33257
15e9cbe6ae49 vfs: simplify path audit disabling in stream clone
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 33234
diff changeset
521 if auditpath:
40754
34f15db81cf0 vfs: extract the audit path logic into a submethod
Boris Feld <boris.feld@octobus.net>
parents: 39904
diff changeset
522 self._auditpath(path, mode)
16199
8181bd808dc5 scmutil: add join method to opener to construct path relative to base
Idan Kamara <idankk86@gmail.com>
parents: 16198
diff changeset
523 f = self.join(path)
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
524
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
525 if b"b" not in mode:
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
526 mode += b"b" # for that other OS
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
527
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
528 nlink = -1
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
529 if mode not in (b'r', b'rb'):
17937
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
530 dirname, basename = util.split(f)
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
531 # If basename is empty, then the path is malformed because it points
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
532 # to a directory. Let the posixfile() call below raise IOError.
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
533 if basename:
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
534 if atomictemp:
40796
03bca908d9fb vfs: add option to not create parent directories implicitly
Yuya Nishihara <yuya@tcha.org>
parents: 40754
diff changeset
535 if makeparentdirs:
03bca908d9fb vfs: add option to not create parent directories implicitly
Yuya Nishihara <yuya@tcha.org>
parents: 40754
diff changeset
536 util.makedirs(dirname, self.createmode, notindexed)
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
537 return util.atomictempfile(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
538 f, mode, self.createmode, checkambig=checkambig
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
539 )
17937
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
540 try:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
541 if b'w' in mode:
17937
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
542 util.unlink(f)
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
543 nlink = 0
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
544 else:
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
545 # nlinks() may behave differently for files on Windows
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
546 # shares if the file is open.
27706
22e362da27cf scmutil: use context managers for file handles
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27651
diff changeset
547 with util.posixfile(f):
22e362da27cf scmutil: use context managers for file handles
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27651
diff changeset
548 nlink = util.nlinks(f)
22e362da27cf scmutil: use context managers for file handles
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27651
diff changeset
549 if nlink < 1:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
550 nlink = 2 # force mktempcopy (issue1922)
49306
2e726c934fcd py3: catch FileNotFoundError instead of checking errno == ENOENT
Manuel Jacob <me@manueljacob.de>
parents: 48946
diff changeset
551 except FileNotFoundError:
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
552 nlink = 0
40796
03bca908d9fb vfs: add option to not create parent directories implicitly
Yuya Nishihara <yuya@tcha.org>
parents: 40754
diff changeset
553 if makeparentdirs:
03bca908d9fb vfs: add option to not create parent directories implicitly
Yuya Nishihara <yuya@tcha.org>
parents: 40754
diff changeset
554 util.makedirs(dirname, self.createmode, notindexed)
17937
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
555 if nlink > 0:
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
556 if self._trustnlink is None:
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
557 self._trustnlink = nlink > 1 or util.checknlink(f)
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
558 if nlink > 1 or not self._trustnlink:
3cb032d50447 vfs: optimize __call__ by not calling util.split for reads
Adrian Buehlmann <adrian@cadifra.com>
parents: 17850
diff changeset
559 util.rename(util.mktempcopy(f), f)
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
560 fp = util.posixfile(f, mode)
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
561 if nlink == 0:
17763
13070de77c86 vfs: backout fchmod change from 76b73ce0ffac
Matt Mackall <mpm@selenic.com>
parents: 17752
diff changeset
562 self._fixfilemode(f)
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
563
29996
9766d88c2465 vfs: use checkambigatclosing in checkambig=True but atomictemp=False case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29995
diff changeset
564 if checkambig:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
565 if mode in (b'r', b'rb'):
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
566 raise error.Abort(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
567 _(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
568 b'implementation error: mode %s is not'
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
569 b' valid for checkambig=True'
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
570 )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
571 % mode
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
572 )
29996
9766d88c2465 vfs: use checkambigatclosing in checkambig=True but atomictemp=False case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29995
diff changeset
573 fp = checkambigatclosing(fp)
9766d88c2465 vfs: use checkambigatclosing in checkambig=True but atomictemp=False case
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29995
diff changeset
574
51883
1edac12af730 vfs: modernize the detection of the main thread
Matt Harbison <matt_harbison@yahoo.com>
parents: 51863
diff changeset
575 if (
1edac12af730 vfs: modernize the detection of the main thread
Matt Harbison <matt_harbison@yahoo.com>
parents: 51863
diff changeset
576 backgroundclose
1edac12af730 vfs: modernize the detection of the main thread
Matt Harbison <matt_harbison@yahoo.com>
parents: 51863
diff changeset
577 and threading.current_thread() is threading.main_thread()
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
578 ):
43484
da9ecbb10368 vfs: more attribute suppressions
Augie Fackler <augie@google.com>
parents: 43482
diff changeset
579 if (
da9ecbb10368 vfs: more attribute suppressions
Augie Fackler <augie@google.com>
parents: 43482
diff changeset
580 not self._backgroundfilecloser # pytype: disable=attribute-error
da9ecbb10368 vfs: more attribute suppressions
Augie Fackler <augie@google.com>
parents: 43482
diff changeset
581 ):
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
582 raise error.Abort(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
583 _(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
584 b'backgroundclose can only be used when a '
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
585 b'backgroundclosing context manager is active'
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
586 )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
587 )
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
588
43484
da9ecbb10368 vfs: more attribute suppressions
Augie Fackler <augie@google.com>
parents: 43482
diff changeset
589 fp = delayclosedfile(
da9ecbb10368 vfs: more attribute suppressions
Augie Fackler <augie@google.com>
parents: 43482
diff changeset
590 fp,
da9ecbb10368 vfs: more attribute suppressions
Augie Fackler <augie@google.com>
parents: 43482
diff changeset
591 self._backgroundfilecloser, # pytype: disable=attribute-error
da9ecbb10368 vfs: more attribute suppressions
Augie Fackler <augie@google.com>
parents: 43482
diff changeset
592 )
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
593
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
594 return fp
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
595
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
596 def symlink(self, src: bytes, dst: bytes) -> None:
18327
4aecdb91443c scmutil: simplify vfs.audit - drop wrapped vfs.auditor
Mads Kiilerich <mads@kiilerich.com>
parents: 18316
diff changeset
597 self.audit(dst)
16199
8181bd808dc5 scmutil: add join method to opener to construct path relative to base
Idan Kamara <idankk86@gmail.com>
parents: 16198
diff changeset
598 linkname = self.join(dst)
31549
18b9d9b95719 vfs: use tryunlink
Ryan McElroy <rmcelroy@fb.com>
parents: 31542
diff changeset
599 util.tryunlink(linkname)
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
600
29017
07be86828e79 util: fix race in makedirs()
Adam Simpkins <simpkins@fb.com>
parents: 28819
diff changeset
601 util.makedirs(os.path.dirname(linkname), self.createmode)
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
602
14261
e3649bcca3f6 opener: rename _can_symlink to _cansymlink
Adrian Buehlmann <adrian@cadifra.com>
parents: 14236
diff changeset
603 if self._cansymlink:
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
604 try:
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
605 os.symlink(src, linkname)
25660
328739ea70c3 global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents: 25658
diff changeset
606 except OSError as err:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
607 raise OSError(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
608 err.errno,
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
609 _(b'could not symlink to %r: %s')
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
610 % (src, encoding.strtolocal(err.strerror)),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
611 linkname,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
612 )
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13962
diff changeset
613 else:
17768
9837cafc25b1 vfs: use self.write to write symlink placeholders
Matt Mackall <mpm@selenic.com>
parents: 17763
diff changeset
614 self.write(dst, src)
13971
bfeaa88b875d move canonpath from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 13970
diff changeset
615
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
616 def join(self, path: Optional[bytes], *insidef: bytes) -> bytes:
17161
be016e96117a localrepo: use file API via vfs while ensuring repository directory
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17157
diff changeset
617 if path:
47809
98c3fa6a3ac2 vfs: always use / as file separator (issue6546)
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47443
diff changeset
618 parts = [self.base, path]
98c3fa6a3ac2 vfs: always use / as file separator (issue6546)
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47443
diff changeset
619 parts.extend(insidef)
98c3fa6a3ac2 vfs: always use / as file separator (issue6546)
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47443
diff changeset
620 return self._join(*parts)
17681
a41fd730f230 scmutil: backout 83785bb56062 (issue3643)
Matt Mackall <mpm@selenic.com>
parents: 17675
diff changeset
621 else:
a41fd730f230 scmutil: backout 83785bb56062 (issue3643)
Matt Mackall <mpm@selenic.com>
parents: 17675
diff changeset
622 return self.base
16199
8181bd808dc5 scmutil: add join method to opener to construct path relative to base
Idan Kamara <idankk86@gmail.com>
parents: 16198
diff changeset
623
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
624
17649
f65c6a5f256c scmutil: rename classes from "opener" to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17561
diff changeset
625 opener = vfs
f65c6a5f256c scmutil: rename classes from "opener" to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17561
diff changeset
626
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
627
41093
6498f0e03526 vfs: fix proxyvfs inheritance
Boris Feld <boris.feld@octobus.net>
parents: 41092
diff changeset
628 class proxyvfs(abstractvfs):
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
629 def __init__(self, vfs: "vfs"):
17845
408ded42c5ec scmutil: abstract out mustaudit delegation
Bryan O'Sullivan <bryano@fb.com>
parents: 17821
diff changeset
630 self.vfs = vfs
408ded42c5ec scmutil: abstract out mustaudit delegation
Bryan O'Sullivan <bryano@fb.com>
parents: 17821
diff changeset
631
50365
d1d458fb96a5 vfsproxy: inherit the `createmode` attribute too
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 49912
diff changeset
632 @property
d1d458fb96a5 vfsproxy: inherit the `createmode` attribute too
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 49912
diff changeset
633 def createmode(self):
d1d458fb96a5 vfsproxy: inherit the `createmode` attribute too
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 49912
diff changeset
634 return self.vfs.createmode
d1d458fb96a5 vfsproxy: inherit the `createmode` attribute too
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 49912
diff changeset
635
41094
adee334d94cd vfs: handle _auditpath in proxyvfs
Boris Feld <boris.feld@octobus.net>
parents: 41093
diff changeset
636 def _auditpath(self, path, mode):
adee334d94cd vfs: handle _auditpath in proxyvfs
Boris Feld <boris.feld@octobus.net>
parents: 41093
diff changeset
637 return self.vfs._auditpath(path, mode)
adee334d94cd vfs: handle _auditpath in proxyvfs
Boris Feld <boris.feld@octobus.net>
parents: 41093
diff changeset
638
27879
52a4ad62b006 cleanup: use modern @property/@foo.setter property specification
Augie Fackler <augie@google.com>
parents: 27851
diff changeset
639 @property
29714
69109052d9ac auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents: 29417
diff changeset
640 def options(self):
69109052d9ac auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents: 29417
diff changeset
641 return self.vfs.options
69109052d9ac auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents: 29417
diff changeset
642
69109052d9ac auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents: 29417
diff changeset
643 @options.setter
69109052d9ac auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents: 29417
diff changeset
644 def options(self, value):
69109052d9ac auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents: 29417
diff changeset
645 self.vfs.options = value
69109052d9ac auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents: 29417
diff changeset
646
51593
b5500857e173 proxy-vfs: also proxy the `audit` attribute
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51430
diff changeset
647 @property
b5500857e173 proxy-vfs: also proxy the `audit` attribute
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51430
diff changeset
648 def audit(self):
b5500857e173 proxy-vfs: also proxy the `audit` attribute
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51430
diff changeset
649 return self.vfs.audit
b5500857e173 proxy-vfs: also proxy the `audit` attribute
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51430
diff changeset
650
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
651
41093
6498f0e03526 vfs: fix proxyvfs inheritance
Boris Feld <boris.feld@octobus.net>
parents: 41092
diff changeset
652 class filtervfs(proxyvfs, abstractvfs):
17649
f65c6a5f256c scmutil: rename classes from "opener" to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17561
diff changeset
653 '''Wrapper vfs for filtering filenames with a function.'''
14090
e24b5e3c2f27 add filteropener abstraction for store openers
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 14089
diff changeset
654
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
655 def __init__(self, vfs: "vfs", filter):
33412
a42369e04aee vfs: rename auditvfs to proxyvfs
Yuya Nishihara <yuya@tcha.org>
parents: 33282
diff changeset
656 proxyvfs.__init__(self, vfs)
14090
e24b5e3c2f27 add filteropener abstraction for store openers
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 14089
diff changeset
657 self._filter = filter
e24b5e3c2f27 add filteropener abstraction for store openers
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 14089
diff changeset
658
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
659 def __call__(self, path: bytes, *args, **kwargs):
17846
f42cf30873dc scmutil: add mustaudit delegation to filtervfs (issue3673)
Bryan O'Sullivan <bryano@fb.com>
parents: 17845
diff changeset
660 return self.vfs(self._filter(path), *args, **kwargs)
14090
e24b5e3c2f27 add filteropener abstraction for store openers
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 14089
diff changeset
661
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
662 def join(self, path: Optional[bytes], *insidef: bytes) -> bytes:
17725
ffd589d4b785 vfs: define "join()" in each classes derived from "abstractvfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17723
diff changeset
663 if path:
24628
a0b47885a1c5 vfs: make it possible to pass multiple path elements to join
Matt Harbison <matt_harbison@yahoo.com>
parents: 24582
diff changeset
664 return self.vfs.join(self._filter(self.vfs.reljoin(path, *insidef)))
17725
ffd589d4b785 vfs: define "join()" in each classes derived from "abstractvfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17723
diff changeset
665 else:
17846
f42cf30873dc scmutil: add mustaudit delegation to filtervfs (issue3673)
Bryan O'Sullivan <bryano@fb.com>
parents: 17845
diff changeset
666 return self.vfs.join(path)
17725
ffd589d4b785 vfs: define "join()" in each classes derived from "abstractvfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17723
diff changeset
667
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
668
17649
f65c6a5f256c scmutil: rename classes from "opener" to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17561
diff changeset
669 filteropener = filtervfs
f65c6a5f256c scmutil: rename classes from "opener" to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17561
diff changeset
670
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
671
41093
6498f0e03526 vfs: fix proxyvfs inheritance
Boris Feld <boris.feld@octobus.net>
parents: 41092
diff changeset
672 class readonlyvfs(proxyvfs):
18213
c38a62af000e vfs: add a read only vfs
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18206
diff changeset
673 '''Wrapper vfs preventing any writing.'''
c38a62af000e vfs: add a read only vfs
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18206
diff changeset
674
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
675 def __init__(self, vfs: "vfs"):
33412
a42369e04aee vfs: rename auditvfs to proxyvfs
Yuya Nishihara <yuya@tcha.org>
parents: 33282
diff changeset
676 proxyvfs.__init__(self, vfs)
18213
c38a62af000e vfs: add a read only vfs
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18206
diff changeset
677
49574
2506c3ac73f4 vfs: make the default opener mode binary
Matt Harbison <matt_harbison@yahoo.com>
parents: 49573
diff changeset
678 def __call__(self, path: bytes, mode: bytes = b'rb', *args, **kw):
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
679 if mode not in (b'r', b'rb'):
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
680 raise error.Abort(_(b'this vfs is read only'))
18213
c38a62af000e vfs: add a read only vfs
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18206
diff changeset
681 return self.vfs(path, mode, *args, **kw)
c38a62af000e vfs: add a read only vfs
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18206
diff changeset
682
49573
cc9a60050a07 typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 49306
diff changeset
683 def join(self, path: Optional[bytes], *insidef: bytes) -> bytes:
26156
a112fffdb632 scmutil.readonlyvfs: implement join
Siddharth Agarwal <sid0@fb.com>
parents: 26098
diff changeset
684 return self.vfs.join(path, *insidef)
18213
c38a62af000e vfs: add a read only vfs
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18206
diff changeset
685
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
686
48946
642e31cb55f0 py3: use class X: instead of class X(object):
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48875
diff changeset
687 class closewrapbase:
29994
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
688 """Base class of wrapper, which hooks closing
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
689
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
690 Do not instantiate outside of the vfs layer.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
691 """
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
692
29994
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
693 def __init__(self, fh):
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43484
diff changeset
694 object.__setattr__(self, '_origfh', fh)
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
695
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
696 def __getattr__(self, attr):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
697 return getattr(self._origfh, attr)
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
698
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
699 def __setattr__(self, attr, value):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
700 return setattr(self._origfh, attr, value)
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
701
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
702 def __delattr__(self, attr):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
703 return delattr(self._origfh, attr)
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
704
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
705 def __enter__(self):
40939
8d9f366b7f19 vfs: ensure closewrapbase fh doesn't escape by entering context manager
Matt Harbison <matt_harbison@yahoo.com>
parents: 39904
diff changeset
706 self._origfh.__enter__()
8d9f366b7f19 vfs: ensure closewrapbase fh doesn't escape by entering context manager
Matt Harbison <matt_harbison@yahoo.com>
parents: 39904
diff changeset
707 return self
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
708
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
709 def __exit__(self, exc_type, exc_value, exc_tb):
43466
2dcd4e773193 vfs: fix erroneous bytes constants
Augie Fackler <augie@google.com>
parents: 43462
diff changeset
710 raise NotImplementedError('attempted instantiating ' + str(type(self)))
29994
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
711
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
712 def close(self):
43466
2dcd4e773193 vfs: fix erroneous bytes constants
Augie Fackler <augie@google.com>
parents: 43462
diff changeset
713 raise NotImplementedError('attempted instantiating ' + str(type(self)))
29994
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
714
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
715
29994
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
716 class delayclosedfile(closewrapbase):
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
717 """Proxy for a file object whose close is delayed.
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
718
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
719 Do not instantiate outside of the vfs layer.
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
720 """
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
721
29994
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
722 def __init__(self, fh, closer):
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
723 super(delayclosedfile, self).__init__(fh)
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43484
diff changeset
724 object.__setattr__(self, '_closer', closer)
29994
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
725
0c40e64d6154 scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29802
diff changeset
726 def __exit__(self, exc_type, exc_value, exc_tb):
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
727 self._closer.close(self._origfh)
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
728
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
729 def close(self):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
730 self._closer.close(self._origfh)
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
731
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
732
48946
642e31cb55f0 py3: use class X: instead of class X(object):
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48875
diff changeset
733 class backgroundfilecloser:
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
734 """Coordinates background closing of file handles on multiple threads."""
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
735
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
736 def __init__(self, ui, expectedcount=-1):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
737 self._running = False
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
738 self._entered = False
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
739 self._threads = []
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
740 self._threadexception = None
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
741
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
742 # Only Windows/NTFS has slow file closing. So only enable by default
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
743 # on that platform. But allow to be enabled elsewhere for testing.
34645
75979c8d4572 codemod: use pycompat.iswindows
Jun Wu <quark@fb.com>
parents: 34022
diff changeset
744 defaultenabled = pycompat.iswindows
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
745 enabled = ui.configbool(b'worker', b'backgroundclose', defaultenabled)
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
746
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
747 if not enabled:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
748 return
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
749
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
750 # There is overhead to starting and stopping the background threads.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
751 # Don't do background processing unless the file count is large enough
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
752 # to justify it.
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
753 minfilecount = ui.configint(b'worker', b'backgroundcloseminfilecount')
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
754 # FUTURE dynamically start background threads after minfilecount closes.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
755 # (We don't currently have any callers that don't know their file count)
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
756 if expectedcount > 0 and expectedcount < minfilecount:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
757 return
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
758
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
759 maxqueue = ui.configint(b'worker', b'backgroundclosemaxqueue')
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
760 threadcount = ui.configint(b'worker', b'backgroundclosethreadcount')
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
761
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
762 ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
763 b'starting %d threads for background file closing\n' % threadcount
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
764 )
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
765
37844
8fb9985382be pycompat: export queue module instead of symbols in module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35725
diff changeset
766 self._queue = pycompat.queue.Queue(maxsize=maxqueue)
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
767 self._running = True
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
768
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
769 for i in range(threadcount):
43462
ffd632c224c3 vfs: another bytes-str confusion on thread name
Augie Fackler <augie@google.com>
parents: 43117
diff changeset
770 t = threading.Thread(target=self._worker, name='backgroundcloser')
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
771 self._threads.append(t)
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
772 t.start()
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
773
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
774 def __enter__(self):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
775 self._entered = True
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
776 return self
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
777
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
778 def __exit__(self, exc_type, exc_value, exc_tb):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
779 self._running = False
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
780
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
781 # Wait for threads to finish closing so open files don't linger for
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
782 # longer than lifetime of context manager.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
783 for t in self._threads:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
784 t.join()
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
785
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
786 def _worker(self):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
787 """Main routine for worker thread."""
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
788 while True:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
789 try:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
790 fh = self._queue.get(block=True, timeout=0.100)
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
791 # Need to catch or the thread will terminate and
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
792 # we could orphan file descriptors.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
793 try:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
794 fh.close()
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
795 except Exception as e:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
796 # Stash so can re-raise from main thread later.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
797 self._threadexception = e
37844
8fb9985382be pycompat: export queue module instead of symbols in module (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35725
diff changeset
798 except pycompat.queue.Empty:
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
799 if not self._running:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
800 break
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
801
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
802 def close(self, fh):
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
803 """Schedule a file for closing."""
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
804 if not self._entered:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
805 raise error.Abort(
43117
8ff1ecfadcd1 cleanup: join string literals that are already on one line
Martin von Zweigbergk <martinvonz@google.com>
parents: 43090
diff changeset
806 _(b'can only call close() when context manager active')
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
807 )
27895
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
808
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
809 # If a background thread encountered an exception, raise now so we fail
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
810 # fast. Otherwise we may potentially go on for minutes until the error
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
811 # is acted on.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
812 if self._threadexception:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
813 e = self._threadexception
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
814 self._threadexception = None
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
815 raise e
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
816
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
817 # If we're not actively running, close synchronously.
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
818 if not self._running:
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
819 fh.close()
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
820 return
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
821
2d6a89e79b48 scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents: 27879
diff changeset
822 self._queue.put(fh, block=True, timeout=None)
29995
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
823
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
824
29995
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
825 class checkambigatclosing(closewrapbase):
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
826 """Proxy for a file object, to avoid ambiguity of file stat
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
827
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
828 See also util.filestat for detail about "ambiguity of file stat".
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
829
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
830 This proxy is useful only if the target file is guarded by any
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
831 lock (e.g. repo.lock or repo.wlock)
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
832
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
833 Do not instantiate outside of the vfs layer.
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
834 """
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43025
diff changeset
835
29995
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
836 def __init__(self, fh):
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
837 super(checkambigatclosing, self).__init__(fh)
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43484
diff changeset
838 object.__setattr__(self, '_oldstat', util.filestat.frompath(fh.name))
29995
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
839
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
840 def _checkambig(self):
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
841 oldstat = self._oldstat
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
842 if oldstat.stat:
33280
646352291f5b vfs: copy if EPERM to avoid file stat ambiguity forcibly at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 33259
diff changeset
843 _avoidambig(self._origfh.name, oldstat)
29995
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
844
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
845 def __exit__(self, exc_type, exc_value, exc_tb):
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
846 self._origfh.__exit__(exc_type, exc_value, exc_tb)
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
847 self._checkambig()
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
848
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
849 def close(self):
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
850 self._origfh.close()
57830bd0e787 scmutil: add file object wrapper class to check ambiguity at closing
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 29994
diff changeset
851 self._checkambig()