Mercurial > hg
annotate mercurial/vfs.py @ 52068:c392d57e8a06
manifest: drop the CamelCase name for `manifest.treemanifest`
See 61557734c0ae for the reasoning.
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Wed, 23 Oct 2024 16:32:34 -0400 |
parents | 992fcf6b2473 |
children | 7346f93be7a4 |
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vfs: extract 'vfs' class and related code to a new 'vfs' module (API)
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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 abc |
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11 import contextlib |
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12 import os |
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13 import shutil |
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14 import stat |
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15 import threading |
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16 import typing |
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17 |
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18 from typing import ( |
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19 Any, |
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20 BinaryIO, |
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21 Callable, |
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22 Dict, |
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23 Iterable, |
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24 Iterator, |
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25 List, |
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26 MutableMapping, |
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27 Optional, |
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28 Tuple, |
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29 Type, |
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30 TypeVar, |
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31 Union, |
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32 ) |
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33 |
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34 from .i18n import _ |
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35 from . import ( |
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36 encoding, |
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37 error, |
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38 pathutil, |
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39 pycompat, |
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40 util, |
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41 ) |
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42 |
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43 if typing.TYPE_CHECKING: |
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44 from . import ( |
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45 ui as uimod, |
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46 ) |
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47 |
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48 _Tbackgroundfilecloser = TypeVar( |
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49 '_Tbackgroundfilecloser', bound='backgroundfilecloser' |
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50 ) |
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51 _Tclosewrapbase = TypeVar('_Tclosewrapbase', bound='closewrapbase') |
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52 _OnErrorFn = Callable[[Exception], Optional[object]] |
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53 |
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54 |
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55 def _avoidambig(path: bytes, oldstat: util.filestat) -> None: |
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56 """Avoid file stat ambiguity forcibly |
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57 |
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58 This function causes copying ``path`` file, if it is owned by |
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59 another (see issue5418 and issue5584 for detail). |
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60 """ |
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61 |
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62 def checkandavoid(): |
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63 newstat = util.filestat.frompath(path) |
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64 # return whether file stat ambiguity is (already) avoided |
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65 return not newstat.isambig(oldstat) or newstat.avoidambig(path, oldstat) |
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66 |
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67 if not checkandavoid(): |
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68 # simply copy to change owner of path to get privilege to |
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69 # advance mtime (see issue5418) |
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70 util.rename(util.mktempcopy(path), path) |
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71 checkandavoid() |
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72 |
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73 |
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74 class abstractvfs(abc.ABC): |
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75 """Abstract base class; cannot be instantiated""" |
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76 |
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77 # default directory separator for vfs |
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78 # |
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79 # Other vfs code always use `/` and this works fine because python file API |
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80 # abstract the use of `/` and make it work transparently. For consistency |
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81 # vfs will always use `/` when joining. This avoids some confusion in |
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82 # encoded vfs (see issue6546) |
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83 _dir_sep: bytes = b'/' |
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84 |
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85 # TODO: type return, which is util.posixfile wrapped by a proxy |
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86 @abc.abstractmethod |
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87 def __call__(self, path: bytes, mode: bytes = b'rb', **kwargs) -> Any: |
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88 ... |
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89 |
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90 @abc.abstractmethod |
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91 def _auditpath(self, path: bytes, mode: bytes) -> None: |
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92 ... |
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93 |
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94 @abc.abstractmethod |
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95 def join(self, path: Optional[bytes], *insidef: bytes) -> bytes: |
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96 ... |
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97 |
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98 def tryread(self, path: bytes) -> bytes: |
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99 '''gracefully return an empty string for missing files''' |
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100 try: |
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101 return self.read(path) |
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102 except FileNotFoundError: |
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103 pass |
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104 return b"" |
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105 |
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106 def tryreadlines(self, path: bytes, mode: bytes = b'rb') -> List[bytes]: |
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107 '''gracefully return an empty array for missing files''' |
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108 try: |
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109 return self.readlines(path, mode=mode) |
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110 except FileNotFoundError: |
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111 pass |
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112 return [] |
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113 |
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114 @util.propertycache |
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115 def open(self): |
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116 """Open ``path`` file, which is relative to vfs root. |
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117 |
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118 Newly created directories are marked as "not to be indexed by |
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119 the content indexing service", if ``notindexed`` is specified |
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120 for "write" mode access. |
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121 """ |
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122 return self.__call__ |
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123 |
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124 def read(self, path: bytes) -> bytes: |
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125 with self(path, b'rb') as fp: |
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126 return fp.read() |
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127 |
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128 def readlines(self, path: bytes, mode: bytes = b'rb') -> List[bytes]: |
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129 with self(path, mode=mode) as fp: |
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130 return fp.readlines() |
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131 |
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132 def write( |
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133 self, path: bytes, data: bytes, backgroundclose: bool = False, **kwargs |
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134 ) -> int: |
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135 with self(path, b'wb', backgroundclose=backgroundclose, **kwargs) as fp: |
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136 return fp.write(data) |
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137 |
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138 def writelines( |
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139 self, |
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140 path: bytes, |
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141 data: Iterable[bytes], |
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142 mode: bytes = b'wb', |
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143 notindexed: bool = False, |
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144 ) -> None: |
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145 with self(path, mode=mode, notindexed=notindexed) as fp: |
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146 return fp.writelines(data) |
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147 |
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148 def append(self, path: bytes, data: bytes) -> int: |
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149 with self(path, b'ab') as fp: |
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150 return fp.write(data) |
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151 |
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152 def basename(self, path: bytes) -> bytes: |
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153 """return base element of a path (as os.path.basename would do) |
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154 |
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155 This exists to allow handling of strange encoding if needed.""" |
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156 return os.path.basename(path) |
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157 |
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158 def chmod(self, path: bytes, mode: int) -> None: |
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159 return os.chmod(self.join(path), mode) |
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160 |
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161 def dirname(self, path: bytes) -> bytes: |
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162 """return dirname element of a path (as os.path.dirname would do) |
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163 |
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164 This exists to allow handling of strange encoding if needed.""" |
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165 return os.path.dirname(path) |
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166 |
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167 def exists(self, path: Optional[bytes] = None) -> bool: |
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168 return os.path.exists(self.join(path)) |
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169 |
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170 def fstat(self, fp: BinaryIO) -> os.stat_result: |
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171 return util.fstat(fp) |
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172 |
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173 def isdir(self, path: Optional[bytes] = None) -> bool: |
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174 return os.path.isdir(self.join(path)) |
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175 |
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176 def isfile(self, path: Optional[bytes] = None) -> bool: |
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177 return os.path.isfile(self.join(path)) |
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178 |
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179 def islink(self, path: Optional[bytes] = None) -> bool: |
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180 return os.path.islink(self.join(path)) |
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181 |
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182 def isfileorlink(self, path: Optional[bytes] = None) -> bool: |
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183 """return whether path is a regular file or a symlink |
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184 |
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185 Unlike isfile, this doesn't follow symlinks.""" |
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186 try: |
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187 st = self.lstat(path) |
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188 except OSError: |
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189 return False |
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190 mode = st.st_mode |
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191 return stat.S_ISREG(mode) or stat.S_ISLNK(mode) |
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192 |
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193 def _join(self, *paths: bytes) -> bytes: |
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194 root_idx = 0 |
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195 for idx, p in enumerate(paths): |
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196 if os.path.isabs(p) or p.startswith(self._dir_sep): |
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197 root_idx = idx |
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198 if root_idx != 0: |
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199 paths = paths[root_idx:] |
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200 paths = [p for p in paths if p] |
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201 return self._dir_sep.join(paths) |
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202 |
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203 def reljoin(self, *paths: bytes) -> bytes: |
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204 """join various elements of a path together (as os.path.join would do) |
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205 |
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206 The vfs base is not injected so that path stay relative. This exists |
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207 to allow handling of strange encoding if needed.""" |
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208 return self._join(*paths) |
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209 |
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210 def split(self, path: bytes) -> Tuple[bytes, bytes]: |
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211 """split top-most element of a path (as os.path.split would do) |
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212 |
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213 This exists to allow handling of strange encoding if needed.""" |
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214 return os.path.split(path) |
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215 |
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216 def lexists(self, path: Optional[bytes] = None) -> bool: |
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217 return os.path.lexists(self.join(path)) |
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218 |
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219 def lstat(self, path: Optional[bytes] = None) -> os.stat_result: |
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220 return os.lstat(self.join(path)) |
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221 |
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222 def is_mmap_safe(self, path: Optional[bytes] = None) -> bool: |
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223 """return True if it is safe to read a file content as mmap |
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224 |
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225 This focus on the file system aspect of such safety, the application |
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226 logic around that file is not taken into account, so caller need to |
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227 make sure the file won't be truncated in a way that will create SIGBUS |
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228 on access. |
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229 |
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230 |
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231 The initial motivation for this logic is that if mmap is used on NFS |
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232 and somebody deletes the mapped file (e.g. by renaming on top of it), |
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233 then you get SIGBUS, which can be pretty disruptive: we get core dump |
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234 reports, and the process terminates without writing to the blackbox. |
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235 |
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236 Instead, in this situation we prefer to read the file normally. |
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237 The risk of ESTALE in the middle of the read remains, but it's |
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238 smaller because we read sooner and the error should be reported |
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239 just as any other error. |
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240 |
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241 Note that python standard library does not offer the necessary function |
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242 to detect the file stem bits. So this detection rely on compiled bits |
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243 and is not available in pure python. |
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244 """ |
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245 # XXX Since we already assume a vfs to address a consistent file system |
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246 # in other location, we could determine the fstype once for the root |
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247 # and cache that value. |
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248 fstype = util.getfstype(self.join(path)) |
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249 return fstype is not None and fstype != b'nfs' |
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250 |
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251 def listdir(self, path: Optional[bytes] = None) -> List[bytes]: |
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252 return os.listdir(self.join(path)) |
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253 |
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254 def makedir(self, path: Optional[bytes] = None, notindexed=True) -> None: |
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255 return util.makedir(self.join(path), notindexed) |
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256 |
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257 def makedirs( |
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258 self, path: Optional[bytes] = None, mode: Optional[int] = None |
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259 ) -> None: |
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260 return util.makedirs(self.join(path), mode) |
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261 |
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262 def makelock(self, info: bytes, path: bytes) -> None: |
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263 return util.makelock(info, self.join(path)) |
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264 |
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265 def mkdir(self, path: Optional[bytes] = None) -> None: |
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266 return os.mkdir(self.join(path)) |
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267 |
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268 def mkstemp( |
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269 self, |
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270 suffix: bytes = b'', |
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271 prefix: bytes = b'tmp', |
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272 dir: Optional[bytes] = None, |
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273 ) -> Tuple[int, bytes]: |
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274 fd, name = pycompat.mkstemp( |
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275 suffix=suffix, prefix=prefix, dir=self.join(dir) |
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276 ) |
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277 dname, fname = util.split(name) |
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278 if dir: |
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279 return fd, os.path.join(dir, fname) |
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280 else: |
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281 return fd, fname |
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282 |
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283 # TODO: This doesn't match osutil.listdir(). stat=False in pure; |
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284 # non-optional bool in cext. 'skip' is bool if we trust cext, or bytes |
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285 # going by how pure uses it. Also, cext returns a custom stat structure. |
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286 # from cext.osutil.pyi: |
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287 # |
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288 # path: bytes, st: bool, skip: Optional[bool] |
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289 def readdir( |
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290 self, path: Optional[bytes] = None, stat=None, skip=None |
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291 ) -> Any: |
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292 return util.listdir(self.join(path), stat, skip) |
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293 |
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294 def readlock(self, path: bytes) -> bytes: |
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295 return util.readlock(self.join(path)) |
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296 |
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297 def rename(self, src: bytes, dst: bytes, checkambig: bool = False) -> None: |
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298 """Rename from src to dst |
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299 |
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300 checkambig argument is used with util.filestat, and is useful |
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301 only if destination file is guarded by any lock |
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302 (e.g. repo.lock or repo.wlock). |
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303 |
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304 To avoid file stat ambiguity forcibly, checkambig=True involves |
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305 copying ``src`` file, if it is owned by another. Therefore, use |
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306 checkambig=True only in limited cases (see also issue5418 and |
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307 issue5584 for detail). |
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308 """ |
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309 self._auditpath(dst, b'w') |
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310 srcpath = self.join(src) |
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311 dstpath = self.join(dst) |
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312 oldstat = util.filestat.frompath(dstpath) if checkambig else None |
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313 |
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314 util.rename(srcpath, dstpath) |
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315 |
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316 if oldstat and oldstat.stat: |
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317 _avoidambig(dstpath, oldstat) |
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318 |
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319 def readlink(self, path: bytes) -> bytes: |
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320 return util.readlink(self.join(path)) |
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321 |
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322 def removedirs(self, path: Optional[bytes] = None) -> None: |
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323 """Remove a leaf directory and all empty intermediate ones""" |
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324 return util.removedirs(self.join(path)) |
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325 |
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326 def rmdir(self, path: Optional[bytes] = None) -> None: |
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327 """Remove an empty directory.""" |
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328 return os.rmdir(self.join(path)) |
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329 |
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330 def rmtree( |
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331 self, |
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332 path: Optional[bytes] = None, |
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333 ignore_errors: bool = False, |
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334 forcibly: bool = False, |
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335 ) -> None: |
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336 """Remove a directory tree recursively |
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337 |
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338 If ``forcibly``, this tries to remove READ-ONLY files, too. |
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339 """ |
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340 if forcibly: |
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341 |
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342 def onexc(function, path: bytes, excinfo): |
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343 if function is not os.remove: |
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344 raise |
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345 # read-only files cannot be unlinked under Windows |
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346 s = os.stat(path) |
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347 if (s.st_mode & stat.S_IWRITE) != 0: |
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348 raise |
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349 os.chmod(path, stat.S_IMODE(s.st_mode) | stat.S_IWRITE) |
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350 os.remove(path) |
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351 |
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352 else: |
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353 onexc = None |
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354 try: |
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355 # pytype: disable=wrong-keyword-args |
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356 return shutil.rmtree( |
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357 self.join(path), ignore_errors=ignore_errors, onexc=onexc |
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358 ) |
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359 # pytype: enable=wrong-keyword-args |
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360 except TypeError: # onexc was introduced in Python 3.12 |
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361 return shutil.rmtree( |
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362 self.join(path), ignore_errors=ignore_errors, onerror=onexc |
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363 ) |
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364 |
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365 def setflags(self, path: bytes, l: bool, x: bool) -> None: |
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366 return util.setflags(self.join(path), l, x) |
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367 |
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368 def stat(self, path: Optional[bytes] = None) -> os.stat_result: |
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369 return os.stat(self.join(path)) |
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370 |
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371 def unlink(self, path: Optional[bytes] = None) -> None: |
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372 return util.unlink(self.join(path)) |
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373 |
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374 def tryunlink(self, path: Optional[bytes] = None) -> bool: |
31542 | 375 """Attempt to remove a file, ignoring missing file errors.""" |
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376 return util.tryunlink(self.join(path)) |
31542 | 377 |
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378 def unlinkpath( |
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379 self, |
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380 path: Optional[bytes] = None, |
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381 ignoremissing: bool = False, |
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382 rmdir: bool = True, |
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383 ) -> None: |
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384 return util.unlinkpath( |
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385 self.join(path), ignoremissing=ignoremissing, rmdir=rmdir |
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386 ) |
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387 |
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388 # TODO: could be Tuple[float, float] too. |
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389 def utime( |
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390 self, path: Optional[bytes] = None, t: Optional[Tuple[int, int]] = None |
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391 ) -> None: |
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392 return os.utime(self.join(path), t) |
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393 |
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394 def walk( |
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395 self, path: Optional[bytes] = None, onerror: Optional[_OnErrorFn] = None |
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396 ) -> Iterator[Tuple[bytes, List[bytes], List[bytes]]]: |
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397 """Yield (dirpath, dirs, files) tuple for each directory under path |
24725 | 398 |
399 ``dirpath`` is relative one from the root of this vfs. This | |
400 uses ``os.sep`` as path separator, even you specify POSIX | |
401 style ``path``. | |
402 | |
403 "The root of this vfs" is represented as empty ``dirpath``. | |
404 """ | |
405 root = os.path.normpath(self.join(None)) | |
406 # when dirpath == root, dirpath[prefixlen:] becomes empty | |
407 # because len(dirpath) < prefixlen. | |
408 prefixlen = len(pathutil.normasprefix(root)) | |
409 for dirpath, dirs, files in os.walk(self.join(path), onerror=onerror): | |
410 yield (dirpath[prefixlen:], dirs, files) | |
411 | |
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412 @contextlib.contextmanager |
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413 def backgroundclosing( |
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414 self, ui: uimod.ui, expectedcount: int = -1 |
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415 ) -> Iterator[Optional[backgroundfilecloser]]: |
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416 """Allow files to be closed asynchronously. |
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417 |
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418 When this context manager is active, ``backgroundclose`` can be passed |
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419 to ``__call__``/``open`` to result in the file possibly being closed |
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420 asynchronously, on a background thread. |
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421 """ |
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422 # Sharing backgroundfilecloser between threads is complex and using |
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423 # multiple instances puts us at risk of running out of file descriptors |
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424 # only allow to use backgroundfilecloser when in main thread. |
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425 if threading.current_thread() is not threading.main_thread(): |
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426 yield |
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427 return |
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428 vfs = getattr(self, 'vfs', self) |
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429 if getattr(vfs, '_backgroundfilecloser', None): |
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430 raise error.Abort( |
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431 _(b'can only have 1 active background file closer') |
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432 ) |
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433 |
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434 with backgroundfilecloser(ui, expectedcount=expectedcount) as bfc: |
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435 try: |
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436 vfs._backgroundfilecloser = ( |
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437 bfc # pytype: disable=attribute-error |
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438 ) |
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439 yield bfc |
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440 finally: |
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441 vfs._backgroundfilecloser = ( |
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442 None # pytype: disable=attribute-error |
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443 ) |
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444 |
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445 def register_file(self, path: bytes) -> None: |
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446 """generic hook point to lets fncache steer its stew""" |
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447 |
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448 |
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449 class vfs(abstractvfs): |
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450 """Operate files relative to a base directory |
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451 |
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452 This class is used to hide the details of COW semantics and |
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453 remote file access from higher level code. |
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454 |
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455 'cacheaudited' should be enabled only if (a) vfs object is short-lived, or |
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456 (b) the base directory is managed by hg and considered sort-of append-only. |
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457 See pathutil.pathauditor() for details. |
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458 """ |
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459 |
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460 audit: Union[pathutil.pathauditor, Callable[[bytes, Optional[bytes]], Any]] |
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461 base: bytes |
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462 createmode: Optional[int] |
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463 options: Dict[bytes, Any] |
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464 _audit: bool |
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465 _trustnlink: Optional[bool] |
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466 |
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467 def __init__( |
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468 self, |
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469 base: bytes, |
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470 audit: bool = True, |
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471 cacheaudited: bool = False, |
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472 expandpath: bool = False, |
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473 realpath: bool = False, |
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474 ) -> None: |
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475 if expandpath: |
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476 base = util.expandpath(base) |
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477 if realpath: |
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478 base = os.path.realpath(base) |
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479 self.base = base |
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480 self._audit = audit |
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481 if audit: |
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482 self.audit = pathutil.pathauditor(self.base, cached=cacheaudited) |
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483 else: |
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484 self.audit = lambda path, mode=None: True |
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485 self.createmode = None |
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486 self._trustnlink = None |
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487 self.options = {} |
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488 |
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489 @util.propertycache |
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490 def _cansymlink(self) -> bool: |
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491 return util.checklink(self.base) |
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492 |
18192
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scmutil: don't try to match modes on filesystems without modes (issue3740)
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493 @util.propertycache |
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494 def _chmod(self) -> bool: |
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495 return util.checkexec(self.base) |
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496 |
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497 def _fixfilemode(self, name: bytes) -> None: |
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498 if self.createmode is None or not self._chmod: |
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499 return |
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|
500 os.chmod(name, self.createmode & 0o666) |
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501 |
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502 def _auditpath(self, path: bytes, mode: bytes) -> None: |
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503 if self._audit: |
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504 if os.path.isabs(path) and path.startswith(self.base): |
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505 path = os.path.relpath(path, self.base) |
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506 r = util.checkosfilename(path) |
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507 if r: |
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508 raise error.Abort(b"%s: %r" % (r, path)) |
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|
509 self.audit(path, mode=mode) |
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|
510 |
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|
511 def isfileorlink_checkdir( |
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512 self, |
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513 dircache: MutableMapping[bytes, bool], |
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514 path: bytes, |
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515 ) -> bool: |
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516 """return True if the path is a regular file or a symlink and |
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517 the directories along the path are "normal", that is |
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|
518 not symlinks or nested hg repositories. |
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519 |
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520 Ignores the `_audit` setting, and checks the directories regardless. |
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521 `dircache` is used to cache the directory checks. |
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522 """ |
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523 try: |
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|
524 for prefix in pathutil.finddirs_rev_noroot(util.localpath(path)): |
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525 if prefix in dircache: |
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526 res = dircache[prefix] |
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527 else: |
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528 res = pathutil.pathauditor._checkfs_exists( |
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529 self.base, prefix, path |
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530 ) |
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|
531 dircache[prefix] = res |
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532 if not res: |
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533 return False |
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534 except (OSError, error.Abort): |
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535 return False |
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536 return self.isfileorlink(path) |
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|
537 |
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538 def __call__( |
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539 self, |
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540 path: bytes, |
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541 mode: bytes = b"rb", |
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542 atomictemp: bool = False, |
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543 notindexed: bool = False, |
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544 backgroundclose: bool = False, |
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545 checkambig: bool = False, |
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546 auditpath: bool = True, |
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547 makeparentdirs: bool = True, |
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548 ) -> Any: # TODO: should be BinaryIO if util.atomictempfile can be coersed |
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549 """Open ``path`` file, which is relative to vfs root. |
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550 |
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551 By default, parent directories are created as needed. Newly created |
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552 directories are marked as "not to be indexed by the content indexing |
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553 service", if ``notindexed`` is specified for "write" mode access. |
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554 Set ``makeparentdirs=False`` to not create directories implicitly. |
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555 |
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556 If ``backgroundclose`` is passed, the file may be closed asynchronously. |
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557 It can only be used if the ``self.backgroundclosing()`` context manager |
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558 is active. This should only be specified if the following criteria hold: |
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559 |
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560 1. There is a potential for writing thousands of files. Unless you |
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561 are writing thousands of files, the performance benefits of |
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562 asynchronously closing files is not realized. |
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563 2. Files are opened exactly once for the ``backgroundclosing`` |
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564 active duration and are therefore free of race conditions between |
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565 closing a file on a background thread and reopening it. (If the |
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566 file were opened multiple times, there could be unflushed data |
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567 because the original file handle hasn't been flushed/closed yet.) |
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568 |
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569 ``checkambig`` argument is passed to atomictempfile (valid |
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570 only for writing), and is useful only if target file is |
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571 guarded by any lock (e.g. repo.lock or repo.wlock). |
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572 |
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573 To avoid file stat ambiguity forcibly, checkambig=True involves |
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574 copying ``path`` file opened in "append" mode (e.g. for |
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575 truncation), if it is owned by another. Therefore, use |
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576 combination of append mode and checkambig=True only in limited |
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577 cases (see also issue5418 and issue5584 for detail). |
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578 """ |
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579 if auditpath: |
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580 self._auditpath(path, mode) |
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581 f = self.join(path) |
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582 |
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583 if b"b" not in mode: |
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584 mode += b"b" # for that other OS |
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585 |
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586 nlink = -1 |
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587 if mode not in (b'r', b'rb'): |
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588 dirname, basename = util.split(f) |
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589 # If basename is empty, then the path is malformed because it points |
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590 # to a directory. Let the posixfile() call below raise IOError. |
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591 if basename: |
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592 if atomictemp: |
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593 if makeparentdirs: |
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594 util.makedirs(dirname, self.createmode, notindexed) |
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595 return util.atomictempfile( |
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596 f, mode, self.createmode, checkambig=checkambig |
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597 ) |
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598 try: |
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599 if b'w' in mode: |
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600 util.unlink(f) |
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601 nlink = 0 |
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602 else: |
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603 # nlinks() may behave differently for files on Windows |
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604 # shares if the file is open. |
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605 with util.posixfile(f): |
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606 nlink = util.nlinks(f) |
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607 if nlink < 1: |
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608 nlink = 2 # force mktempcopy (issue1922) |
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609 except FileNotFoundError: |
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610 nlink = 0 |
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611 if makeparentdirs: |
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612 util.makedirs(dirname, self.createmode, notindexed) |
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613 if nlink > 0: |
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614 if self._trustnlink is None: |
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615 self._trustnlink = nlink > 1 or util.checknlink(f) |
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616 if nlink > 1 or not self._trustnlink: |
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617 util.rename(util.mktempcopy(f), f) |
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618 fp = util.posixfile(f, mode) |
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619 if nlink == 0: |
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620 self._fixfilemode(f) |
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621 |
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622 if checkambig: |
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623 if mode in (b'r', b'rb'): |
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624 raise error.Abort( |
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625 _( |
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626 b'implementation error: mode %s is not' |
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627 b' valid for checkambig=True' |
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628 ) |
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629 % mode |
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630 ) |
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631 fp = checkambigatclosing(fp) |
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632 |
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633 if ( |
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634 backgroundclose |
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635 and threading.current_thread() is threading.main_thread() |
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636 ): |
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637 if ( |
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638 not self._backgroundfilecloser # pytype: disable=attribute-error |
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639 ): |
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640 raise error.Abort( |
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641 _( |
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642 b'backgroundclose can only be used when a ' |
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643 b'backgroundclosing context manager is active' |
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644 ) |
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645 ) |
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646 |
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647 fp = delayclosedfile( |
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648 fp, |
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649 self._backgroundfilecloser, # pytype: disable=attribute-error |
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650 ) |
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scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents:
27879
diff
changeset
|
651 |
13970
d13913355390
move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents:
13962
diff
changeset
|
652 return fp |
d13913355390
move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents:
13962
diff
changeset
|
653 |
49573
cc9a60050a07
typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents:
49306
diff
changeset
|
654 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
|
655 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
|
656 linkname = self.join(dst) |
31549 | 657 util.tryunlink(linkname) |
13970
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move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents:
13962
diff
changeset
|
658 |
29017
07be86828e79
util: fix race in makedirs()
Adam Simpkins <simpkins@fb.com>
parents:
28819
diff
changeset
|
659 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
|
660 |
14261
e3649bcca3f6
opener: rename _can_symlink to _cansymlink
Adrian Buehlmann <adrian@cadifra.com>
parents:
14236
diff
changeset
|
661 if self._cansymlink: |
13970
d13913355390
move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents:
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diff
changeset
|
662 try: |
d13913355390
move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents:
13962
diff
changeset
|
663 os.symlink(src, linkname) |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
diff
changeset
|
664 except OSError as err: |
43076
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Augie Fackler <augie@google.com>
parents:
43025
diff
changeset
|
665 raise OSError( |
2372284d9457
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parents:
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changeset
|
666 err.errno, |
43077
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parents:
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diff
changeset
|
667 _(b'could not symlink to %r: %s') |
43076
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parents:
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changeset
|
668 % (src, encoding.strtolocal(err.strerror)), |
2372284d9457
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parents:
43025
diff
changeset
|
669 linkname, |
2372284d9457
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parents:
43025
diff
changeset
|
670 ) |
13970
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move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents:
13962
diff
changeset
|
671 else: |
17768
9837cafc25b1
vfs: use self.write to write symlink placeholders
Matt Mackall <mpm@selenic.com>
parents:
17763
diff
changeset
|
672 self.write(dst, src) |
13971
bfeaa88b875d
move canonpath from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents:
13970
diff
changeset
|
673 |
49573
cc9a60050a07
typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents:
49306
diff
changeset
|
674 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
|
675 if path: |
47809
98c3fa6a3ac2
vfs: always use / as file separator (issue6546)
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
47443
diff
changeset
|
676 parts = [self.base, path] |
98c3fa6a3ac2
vfs: always use / as file separator (issue6546)
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
47443
diff
changeset
|
677 parts.extend(insidef) |
98c3fa6a3ac2
vfs: always use / as file separator (issue6546)
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
47443
diff
changeset
|
678 return self._join(*parts) |
17681
a41fd730f230
scmutil: backout 83785bb56062 (issue3643)
Matt Mackall <mpm@selenic.com>
parents:
17675
diff
changeset
|
679 else: |
a41fd730f230
scmutil: backout 83785bb56062 (issue3643)
Matt Mackall <mpm@selenic.com>
parents:
17675
diff
changeset
|
680 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
|
681 |
43076
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Augie Fackler <augie@google.com>
parents:
43025
diff
changeset
|
682 |
51890
38720073aa34
typing: run `merge-pyi` on `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51886
diff
changeset
|
683 opener: Type[vfs] = vfs |
17649
f65c6a5f256c
scmutil: rename classes from "opener" to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17561
diff
changeset
|
684 |
43076
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Augie Fackler <augie@google.com>
parents:
43025
diff
changeset
|
685 |
51884
f79f98733a5b
vfs: use @abstractmethod instead of homebrewing abstract methods
Matt Harbison <matt_harbison@yahoo.com>
parents:
51883
diff
changeset
|
686 class proxyvfs(abstractvfs, abc.ABC): |
51892
fa9e8a6521c1
typing: manually add type annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51891
diff
changeset
|
687 def __init__(self, vfs: vfs) -> None: |
17845
408ded42c5ec
scmutil: abstract out mustaudit delegation
Bryan O'Sullivan <bryano@fb.com>
parents:
17821
diff
changeset
|
688 self.vfs = vfs |
408ded42c5ec
scmutil: abstract out mustaudit delegation
Bryan O'Sullivan <bryano@fb.com>
parents:
17821
diff
changeset
|
689 |
50365
d1d458fb96a5
vfsproxy: inherit the `createmode` attribute too
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
49912
diff
changeset
|
690 @property |
51892
fa9e8a6521c1
typing: manually add type annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51891
diff
changeset
|
691 def createmode(self) -> Optional[int]: |
50365
d1d458fb96a5
vfsproxy: inherit the `createmode` attribute too
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
49912
diff
changeset
|
692 return self.vfs.createmode |
d1d458fb96a5
vfsproxy: inherit the `createmode` attribute too
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
49912
diff
changeset
|
693 |
51892
fa9e8a6521c1
typing: manually add type annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51891
diff
changeset
|
694 def _auditpath(self, path: bytes, mode: bytes) -> None: |
41094
adee334d94cd
vfs: handle _auditpath in proxyvfs
Boris Feld <boris.feld@octobus.net>
parents:
41093
diff
changeset
|
695 return self.vfs._auditpath(path, mode) |
adee334d94cd
vfs: handle _auditpath in proxyvfs
Boris Feld <boris.feld@octobus.net>
parents:
41093
diff
changeset
|
696 |
27879
52a4ad62b006
cleanup: use modern @property/@foo.setter property specification
Augie Fackler <augie@google.com>
parents:
27851
diff
changeset
|
697 @property |
51894
992fcf6b2473
typing: add a handful more annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51893
diff
changeset
|
698 def options(self) -> Dict[bytes, Any]: |
29714
69109052d9ac
auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents:
29417
diff
changeset
|
699 return self.vfs.options |
69109052d9ac
auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents:
29417
diff
changeset
|
700 |
69109052d9ac
auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents:
29417
diff
changeset
|
701 @options.setter |
51894
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typing: add a handful more annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
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diff
changeset
|
702 def options(self, value: Dict[bytes, Any]) -> None: |
29714
69109052d9ac
auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
703 self.vfs.options = value |
69109052d9ac
auditvfs: forward options property from nested vfs
Augie Fackler <augie@google.com>
parents:
29417
diff
changeset
|
704 |
51593
b5500857e173
proxy-vfs: also proxy the `audit` attribute
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
51430
diff
changeset
|
705 @property |
b5500857e173
proxy-vfs: also proxy the `audit` attribute
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
51430
diff
changeset
|
706 def audit(self): |
b5500857e173
proxy-vfs: also proxy the `audit` attribute
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
51430
diff
changeset
|
707 return self.vfs.audit |
b5500857e173
proxy-vfs: also proxy the `audit` attribute
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
51430
diff
changeset
|
708 |
43076
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parents:
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diff
changeset
|
709 |
41093
6498f0e03526
vfs: fix proxyvfs inheritance
Boris Feld <boris.feld@octobus.net>
parents:
41092
diff
changeset
|
710 class filtervfs(proxyvfs, abstractvfs): |
17649
f65c6a5f256c
scmutil: rename classes from "opener" to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17561
diff
changeset
|
711 '''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
|
712 |
51894
992fcf6b2473
typing: add a handful more annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51893
diff
changeset
|
713 def __init__(self, vfs: vfs, filter: Callable[[bytes], bytes]) -> None: |
33412
a42369e04aee
vfs: rename auditvfs to proxyvfs
Yuya Nishihara <yuya@tcha.org>
parents:
33282
diff
changeset
|
714 proxyvfs.__init__(self, vfs) |
14090
e24b5e3c2f27
add filteropener abstraction for store openers
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents:
14089
diff
changeset
|
715 self._filter = filter |
e24b5e3c2f27
add filteropener abstraction for store openers
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents:
14089
diff
changeset
|
716 |
51892
fa9e8a6521c1
typing: manually add type annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51891
diff
changeset
|
717 # TODO: The return type should be BinaryIO |
51890
38720073aa34
typing: run `merge-pyi` on `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51886
diff
changeset
|
718 def __call__(self, path: bytes, *args, **kwargs) -> Any: |
17846
f42cf30873dc
scmutil: add mustaudit delegation to filtervfs (issue3673)
Bryan O'Sullivan <bryano@fb.com>
parents:
17845
diff
changeset
|
719 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
|
720 |
49573
cc9a60050a07
typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents:
49306
diff
changeset
|
721 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
|
722 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
|
723 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
|
724 else: |
17846
f42cf30873dc
scmutil: add mustaudit delegation to filtervfs (issue3673)
Bryan O'Sullivan <bryano@fb.com>
parents:
17845
diff
changeset
|
725 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
|
726 |
43076
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Augie Fackler <augie@google.com>
parents:
43025
diff
changeset
|
727 |
51890
38720073aa34
typing: run `merge-pyi` on `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51886
diff
changeset
|
728 filteropener: Type[filtervfs] = filtervfs |
17649
f65c6a5f256c
scmutil: rename classes from "opener" to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17561
diff
changeset
|
729 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43025
diff
changeset
|
730 |
41093
6498f0e03526
vfs: fix proxyvfs inheritance
Boris Feld <boris.feld@octobus.net>
parents:
41092
diff
changeset
|
731 class readonlyvfs(proxyvfs): |
18213
c38a62af000e
vfs: add a read only vfs
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
18206
diff
changeset
|
732 '''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
|
733 |
51892
fa9e8a6521c1
typing: manually add type annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51891
diff
changeset
|
734 def __init__(self, vfs: vfs) -> None: |
33412
a42369e04aee
vfs: rename auditvfs to proxyvfs
Yuya Nishihara <yuya@tcha.org>
parents:
33282
diff
changeset
|
735 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
|
736 |
51892
fa9e8a6521c1
typing: manually add type annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51891
diff
changeset
|
737 # TODO: The return type should be BinaryIO |
51890
38720073aa34
typing: run `merge-pyi` on `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51886
diff
changeset
|
738 def __call__(self, path: bytes, mode: bytes = b'rb', *args, **kw) -> Any: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
739 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
|
740 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
|
741 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
|
742 |
49573
cc9a60050a07
typing: add basic type hints to vfs.py
Matt Harbison <matt_harbison@yahoo.com>
parents:
49306
diff
changeset
|
743 def join(self, path: Optional[bytes], *insidef: bytes) -> bytes: |
26156
a112fffdb632
scmutil.readonlyvfs: implement join
Siddharth Agarwal <sid0@fb.com>
parents:
26098
diff
changeset
|
744 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
|
745 |
43076
2372284d9457
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Augie Fackler <augie@google.com>
parents:
43025
diff
changeset
|
746 |
51884
f79f98733a5b
vfs: use @abstractmethod instead of homebrewing abstract methods
Matt Harbison <matt_harbison@yahoo.com>
parents:
51883
diff
changeset
|
747 class closewrapbase(abc.ABC): |
29994
0c40e64d6154
scmutil: factor out common logic of delayclosedfile to reuse it
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
29802
diff
changeset
|
748 """Base class of wrapper, which hooks closing |
27895
2d6a89e79b48
scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents:
27879
diff
changeset
|
749 |
51886
e59e1d8d29d2
vfs: do minor copyediting on comments and doc strings
Matt Harbison <matt_harbison@yahoo.com>
parents:
51885
diff
changeset
|
750 Do not instantiate outside the vfs layer. |
27895
2d6a89e79b48
scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents:
27879
diff
changeset
|
751 """ |
43076
2372284d9457
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Augie Fackler <augie@google.com>
parents:
43025
diff
changeset
|
752 |
51890
38720073aa34
typing: run `merge-pyi` on `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51886
diff
changeset
|
753 def __init__(self, fh) -> None: |
43506
9f70512ae2cf
cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents:
43484
diff
changeset
|
754 object.__setattr__(self, '_origfh', fh) |
27895
2d6a89e79b48
scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents:
27879
diff
changeset
|
755 |
51892
fa9e8a6521c1
typing: manually add type annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51891
diff
changeset
|
756 def __getattr__(self, attr: str) -> Any: |
27895
2d6a89e79b48
scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents:
27879
diff
changeset
|
757 return getattr(self._origfh, attr) |
2d6a89e79b48
scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents:
27879
diff
changeset
|
758 |
51892
fa9e8a6521c1
typing: manually add type annotations to `mercurial/vfs.py`
Matt Harbison <matt_harbison@yahoo.com>
parents:
51891
diff
changeset
|
759 def __setattr__(self, attr: str, value: Any) -> None: |
27895
2d6a89e79b48
scmutil: support background file closing
Gregory Szorc <gregory.szorc@gmail.com>
parents:
27879
diff
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|
760 return setattr(self._origfh, attr, value) |
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761 |
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762 def __delattr__(self, attr: str) -> None: |
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763 return delattr(self._origfh, attr) |
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764 |
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765 def __enter__(self: _Tclosewrapbase) -> _Tclosewrapbase: |
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766 self._origfh.__enter__() |
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767 return self |
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768 |
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769 @abc.abstractmethod |
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770 def __exit__(self, exc_type, exc_value, exc_tb) -> None: |
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771 ... |
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772 |
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773 @abc.abstractmethod |
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774 def close(self) -> None: |
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775 ... |
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776 |
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777 |
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778 class delayclosedfile(closewrapbase): |
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779 """Proxy for a file object whose close is delayed. |
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780 |
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781 Do not instantiate outside the vfs layer. |
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782 """ |
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783 |
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784 def __init__(self, fh, closer) -> None: |
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785 super(delayclosedfile, self).__init__(fh) |
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786 object.__setattr__(self, '_closer', closer) |
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787 |
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788 def __exit__(self, exc_type, exc_value, exc_tb) -> None: |
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789 self._closer.close(self._origfh) |
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790 |
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791 def close(self) -> None: |
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792 self._closer.close(self._origfh) |
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793 |
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794 |
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795 class backgroundfilecloser: |
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796 """Coordinates background closing of file handles on multiple threads.""" |
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797 |
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798 def __init__(self, ui: uimod.ui, expectedcount: int = -1) -> None: |
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799 self._running = False |
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800 self._entered = False |
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801 self._threads = [] |
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802 self._threadexception = None |
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803 |
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804 # Only Windows/NTFS has slow file closing. So only enable by default |
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805 # on that platform. But allow to be enabled elsewhere for testing. |
34645 | 806 defaultenabled = pycompat.iswindows |
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807 enabled = ui.configbool(b'worker', b'backgroundclose', defaultenabled) |
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808 |
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809 if not enabled: |
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810 return |
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811 |
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812 # There is overhead to starting and stopping the background threads. |
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813 # Don't do background processing unless the file count is large enough |
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814 # to justify it. |
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815 minfilecount = ui.configint(b'worker', b'backgroundcloseminfilecount') |
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816 # FUTURE dynamically start background threads after minfilecount closes. |
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817 # (We don't currently have any callers that don't know their file count) |
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818 if expectedcount > 0 and expectedcount < minfilecount: |
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819 return |
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820 |
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821 maxqueue = ui.configint(b'worker', b'backgroundclosemaxqueue') |
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822 threadcount = ui.configint(b'worker', b'backgroundclosethreadcount') |
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823 |
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824 ui.debug( |
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825 b'starting %d threads for background file closing\n' % threadcount |
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826 ) |
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827 |
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828 self._queue = pycompat.queue.Queue(maxsize=maxqueue) |
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829 self._running = True |
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830 |
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831 for i in range(threadcount): |
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832 t = threading.Thread(target=self._worker, name='backgroundcloser') |
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833 self._threads.append(t) |
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834 t.start() |
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835 |
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836 def __enter__(self: _Tbackgroundfilecloser) -> _Tbackgroundfilecloser: |
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837 self._entered = True |
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838 return self |
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839 |
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840 def __exit__(self, exc_type, exc_value, exc_tb) -> None: |
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841 self._running = False |
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842 |
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843 # Wait for threads to finish closing so open files don't linger for |
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844 # longer than lifetime of context manager. |
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845 for t in self._threads: |
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846 t.join() |
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847 |
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848 def _worker(self) -> None: |
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849 """Main routine for worker thread.""" |
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850 while True: |
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851 try: |
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852 fh = self._queue.get(block=True, timeout=0.100) |
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853 # Need to catch or the thread will terminate and |
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854 # we could orphan file descriptors. |
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855 try: |
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856 fh.close() |
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857 except Exception as e: |
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858 # Stash so can re-raise from main thread later. |
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859 self._threadexception = e |
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860 except pycompat.queue.Empty: |
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861 if not self._running: |
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862 break |
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863 |
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864 def close(self, fh) -> None: |
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865 """Schedule a file for closing.""" |
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866 if not self._entered: |
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867 raise error.Abort( |
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868 _(b'can only call close() when context manager active') |
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869 ) |
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870 |
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871 # If a background thread encountered an exception, raise now so we fail |
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872 # fast. Otherwise, we may potentially go on for minutes until the error |
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873 # is acted on. |
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874 if self._threadexception: |
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875 e = self._threadexception |
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876 self._threadexception = None |
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877 raise e |
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878 |
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879 # If we're not actively running, close synchronously. |
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880 if not self._running: |
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881 fh.close() |
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882 return |
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883 |
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884 self._queue.put(fh, block=True, timeout=None) |
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885 |
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886 |
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887 class checkambigatclosing(closewrapbase): |
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888 """Proxy for a file object, to avoid ambiguity of file stat |
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889 |
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890 See also util.filestat for detail about "ambiguity of file stat". |
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891 |
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892 This proxy is useful only if the target file is guarded by any |
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893 lock (e.g. repo.lock or repo.wlock) |
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894 |
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895 Do not instantiate outside the vfs layer. |
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896 """ |
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897 |
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898 def __init__(self, fh) -> None: |
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899 super(checkambigatclosing, self).__init__(fh) |
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900 object.__setattr__(self, '_oldstat', util.filestat.frompath(fh.name)) |
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901 |
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902 def _checkambig(self) -> None: |
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903 oldstat = self._oldstat |
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904 if oldstat.stat: |
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905 _avoidambig(self._origfh.name, oldstat) |
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906 |
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907 def __exit__(self, exc_type, exc_value, exc_tb) -> None: |
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908 self._origfh.__exit__(exc_type, exc_value, exc_tb) |
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909 self._checkambig() |
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910 |
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911 def close(self) -> None: |
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912 self._origfh.close() |
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913 self._checkambig() |