Mercurial > hg
annotate hgext/fsmonitor/__init__.py @ 30666:6ada1658fc6b
py3: use python 3 compatible variables in hgext/fsmontor/__init__.py
Earlier this was left thinking that its part of pywatchman package.
This patch replaces variables os.sep, sys.platform and os.envrion with their
py3 compatible ones.
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Wed, 21 Dec 2016 23:40:38 +0530 |
parents | 318a24b52eeb |
children | 1064a296a2a7 |
rev | line source |
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1 # __init__.py - fsmonitor initialization and overrides |
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2 # |
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3 # Copyright 2013-2016 Facebook, Inc. |
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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 '''Faster status operations with the Watchman file monitor (EXPERIMENTAL) |
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9 |
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10 Integrates the file-watching program Watchman with Mercurial to produce faster |
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11 status results. |
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12 |
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13 On a particular Linux system, for a real-world repository with over 400,000 |
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14 files hosted on ext4, vanilla `hg status` takes 1.3 seconds. On the same |
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15 system, with fsmonitor it takes about 0.3 seconds. |
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16 |
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17 fsmonitor requires no configuration -- it will tell Watchman about your |
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18 repository as necessary. You'll need to install Watchman from |
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19 https://facebook.github.io/watchman/ and make sure it is in your PATH. |
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20 |
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21 The following configuration options exist: |
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22 |
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23 :: |
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24 |
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25 [fsmonitor] |
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26 mode = {off, on, paranoid} |
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27 |
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28 When `mode = off`, fsmonitor will disable itself (similar to not loading the |
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29 extension at all). When `mode = on`, fsmonitor will be enabled (the default). |
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30 When `mode = paranoid`, fsmonitor will query both Watchman and the filesystem, |
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31 and ensure that the results are consistent. |
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32 |
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33 :: |
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34 |
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35 [fsmonitor] |
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36 timeout = (float) |
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37 |
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38 A value, in seconds, that determines how long fsmonitor will wait for Watchman |
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39 to return results. Defaults to `2.0`. |
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40 |
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41 :: |
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42 |
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43 [fsmonitor] |
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44 blacklistusers = (list of userids) |
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45 |
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46 A list of usernames for which fsmonitor will disable itself altogether. |
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47 |
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48 :: |
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49 |
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50 [fsmonitor] |
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51 walk_on_invalidate = (boolean) |
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52 |
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53 Whether or not to walk the whole repo ourselves when our cached state has been |
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54 invalidated, for example when Watchman has been restarted or .hgignore rules |
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55 have been changed. Walking the repo in that case can result in competing for |
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56 I/O with Watchman. For large repos it is recommended to set this value to |
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57 false. You may wish to set this to true if you have a very fast filesystem |
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58 that can outpace the IPC overhead of getting the result data for the full repo |
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59 from Watchman. Defaults to false. |
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60 |
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61 fsmonitor is incompatible with the largefiles and eol extensions, and |
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62 will disable itself if any of those are active. |
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63 |
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64 ''' |
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65 |
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66 # Platforms Supported |
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67 # =================== |
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68 # |
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69 # **Linux:** *Stable*. Watchman and fsmonitor are both known to work reliably, |
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70 # even under severe loads. |
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71 # |
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72 # **Mac OS X:** *Stable*. The Mercurial test suite passes with fsmonitor |
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73 # turned on, on case-insensitive HFS+. There has been a reasonable amount of |
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74 # user testing under normal loads. |
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75 # |
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76 # **Solaris, BSD:** *Alpha*. watchman and fsmonitor are believed to work, but |
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77 # very little testing has been done. |
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78 # |
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79 # **Windows:** *Alpha*. Not in a release version of watchman or fsmonitor yet. |
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80 # |
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81 # Known Issues |
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82 # ============ |
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83 # |
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84 # * fsmonitor will disable itself if any of the following extensions are |
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85 # enabled: largefiles, inotify, eol; or if the repository has subrepos. |
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86 # * fsmonitor will produce incorrect results if nested repos that are not |
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87 # subrepos exist. *Workaround*: add nested repo paths to your `.hgignore`. |
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88 # |
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89 # The issues related to nested repos and subrepos are probably not fundamental |
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90 # ones. Patches to fix them are welcome. |
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91 |
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92 from __future__ import absolute_import |
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93 |
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94 import hashlib |
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95 import os |
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96 import stat |
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97 |
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98 from mercurial.i18n import _ |
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99 from mercurial import ( |
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100 context, |
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101 encoding, |
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102 extensions, |
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103 localrepo, |
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104 merge, |
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105 pathutil, |
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106 pycompat, |
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107 scmutil, |
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108 util, |
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109 ) |
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110 from mercurial import match as matchmod |
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111 |
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112 from . import ( |
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113 state, |
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114 watchmanclient, |
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115 ) |
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116 |
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117 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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118 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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119 # be specifying the version(s) of Mercurial they are tested with, or |
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120 # leave the attribute unspecified. |
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121 testedwith = 'ships-with-hg-core' |
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122 |
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123 # This extension is incompatible with the following blacklisted extensions |
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124 # and will disable itself when encountering one of these: |
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125 _blacklist = ['largefiles', 'eol'] |
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126 |
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127 def _handleunavailable(ui, state, ex): |
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128 """Exception handler for Watchman interaction exceptions""" |
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129 if isinstance(ex, watchmanclient.Unavailable): |
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130 if ex.warn: |
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131 ui.warn(str(ex) + '\n') |
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132 if ex.invalidate: |
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133 state.invalidate() |
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134 ui.log('fsmonitor', 'Watchman unavailable: %s\n', ex.msg) |
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135 else: |
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136 ui.log('fsmonitor', 'Watchman exception: %s\n', ex) |
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137 |
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138 def _hashignore(ignore): |
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139 """Calculate hash for ignore patterns and filenames |
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140 |
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141 If this information changes between Mercurial invocations, we can't |
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142 rely on Watchman information anymore and have to re-scan the working |
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143 copy. |
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144 |
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145 """ |
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146 sha1 = hashlib.sha1() |
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147 if util.safehasattr(ignore, 'includepat'): |
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148 sha1.update(ignore.includepat) |
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149 sha1.update('\0\0') |
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150 if util.safehasattr(ignore, 'excludepat'): |
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151 sha1.update(ignore.excludepat) |
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152 sha1.update('\0\0') |
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153 if util.safehasattr(ignore, 'patternspat'): |
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154 sha1.update(ignore.patternspat) |
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155 sha1.update('\0\0') |
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156 if util.safehasattr(ignore, '_files'): |
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157 for f in ignore._files: |
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158 sha1.update(f) |
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159 sha1.update('\0') |
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160 return sha1.hexdigest() |
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161 |
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162 def overridewalk(orig, self, match, subrepos, unknown, ignored, full=True): |
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163 '''Replacement for dirstate.walk, hooking into Watchman. |
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164 |
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165 Whenever full is False, ignored is False, and the Watchman client is |
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166 available, use Watchman combined with saved state to possibly return only a |
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167 subset of files.''' |
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168 def bail(): |
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169 return orig(match, subrepos, unknown, ignored, full=True) |
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170 |
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171 if full or ignored or not self._watchmanclient.available(): |
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172 return bail() |
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173 state = self._fsmonitorstate |
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174 clock, ignorehash, notefiles = state.get() |
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175 if not clock: |
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176 if state.walk_on_invalidate: |
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177 return bail() |
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178 # Initial NULL clock value, see |
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179 # https://facebook.github.io/watchman/docs/clockspec.html |
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180 clock = 'c:0:0' |
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181 notefiles = [] |
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182 |
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183 def fwarn(f, msg): |
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184 self._ui.warn('%s: %s\n' % (self.pathto(f), msg)) |
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185 return False |
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186 |
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187 def badtype(mode): |
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188 kind = _('unknown') |
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189 if stat.S_ISCHR(mode): |
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190 kind = _('character device') |
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191 elif stat.S_ISBLK(mode): |
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192 kind = _('block device') |
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193 elif stat.S_ISFIFO(mode): |
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194 kind = _('fifo') |
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195 elif stat.S_ISSOCK(mode): |
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196 kind = _('socket') |
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197 elif stat.S_ISDIR(mode): |
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198 kind = _('directory') |
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199 return _('unsupported file type (type is %s)') % kind |
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200 |
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201 ignore = self._ignore |
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202 dirignore = self._dirignore |
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203 if unknown: |
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204 if _hashignore(ignore) != ignorehash and clock != 'c:0:0': |
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205 # ignore list changed -- can't rely on Watchman state any more |
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206 if state.walk_on_invalidate: |
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207 return bail() |
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208 notefiles = [] |
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209 clock = 'c:0:0' |
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210 else: |
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211 # always ignore |
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212 ignore = util.always |
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213 dirignore = util.always |
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214 |
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215 matchfn = match.matchfn |
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216 matchalways = match.always() |
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217 dmap = self._map |
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218 nonnormalset = getattr(self, '_nonnormalset', None) |
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219 |
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220 copymap = self._copymap |
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221 getkind = stat.S_IFMT |
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222 dirkind = stat.S_IFDIR |
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223 regkind = stat.S_IFREG |
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224 lnkkind = stat.S_IFLNK |
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225 join = self._join |
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226 normcase = util.normcase |
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227 fresh_instance = False |
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228 |
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229 exact = skipstep3 = False |
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230 if matchfn == match.exact: # match.exact |
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231 exact = True |
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232 dirignore = util.always # skip step 2 |
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233 elif match.files() and not match.anypats(): # match.match, no patterns |
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234 skipstep3 = True |
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235 |
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236 if not exact and self._checkcase: |
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237 # note that even though we could receive directory entries, we're only |
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238 # interested in checking if a file with the same name exists. So only |
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239 # normalize files if possible. |
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240 normalize = self._normalizefile |
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241 skipstep3 = False |
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242 else: |
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243 normalize = None |
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244 |
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245 # step 1: find all explicit files |
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246 results, work, dirsnotfound = self._walkexplicit(match, subrepos) |
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247 |
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248 skipstep3 = skipstep3 and not (work or dirsnotfound) |
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249 work = [d for d in work if not dirignore(d[0])] |
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250 |
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251 if not work and (exact or skipstep3): |
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252 for s in subrepos: |
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253 del results[s] |
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254 del results['.hg'] |
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255 return results |
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256 |
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257 # step 2: query Watchman |
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258 try: |
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259 # Use the user-configured timeout for the query. |
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260 # Add a little slack over the top of the user query to allow for |
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261 # overheads while transferring the data |
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262 self._watchmanclient.settimeout(state.timeout + 0.1) |
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263 result = self._watchmanclient.command('query', { |
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264 'fields': ['mode', 'mtime', 'size', 'exists', 'name'], |
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265 'since': clock, |
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266 'expression': [ |
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267 'not', [ |
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268 'anyof', ['dirname', '.hg'], |
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269 ['name', '.hg', 'wholename'] |
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270 ] |
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271 ], |
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272 'sync_timeout': int(state.timeout * 1000), |
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273 'empty_on_fresh_instance': state.walk_on_invalidate, |
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274 }) |
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275 except Exception as ex: |
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276 _handleunavailable(self._ui, state, ex) |
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277 self._watchmanclient.clearconnection() |
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278 return bail() |
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279 else: |
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280 # We need to propagate the last observed clock up so that we |
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281 # can use it for our next query |
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282 state.setlastclock(result['clock']) |
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283 if result['is_fresh_instance']: |
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284 if state.walk_on_invalidate: |
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285 state.invalidate() |
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286 return bail() |
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287 fresh_instance = True |
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288 # Ignore any prior noteable files from the state info |
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289 notefiles = [] |
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290 |
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291 # for file paths which require normalization and we encounter a case |
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292 # collision, we store our own foldmap |
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293 if normalize: |
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294 foldmap = dict((normcase(k), k) for k in results) |
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295 |
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296 switch_slashes = pycompat.ossep == '\\' |
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297 # The order of the results is, strictly speaking, undefined. |
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298 # For case changes on a case insensitive filesystem we may receive |
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299 # two entries, one with exists=True and another with exists=False. |
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300 # The exists=True entries in the same response should be interpreted |
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301 # as being happens-after the exists=False entries due to the way that |
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302 # Watchman tracks files. We use this property to reconcile deletes |
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303 # for name case changes. |
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304 for entry in result['files']: |
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305 fname = entry['name'] |
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306 if switch_slashes: |
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307 fname = fname.replace('\\', '/') |
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308 if normalize: |
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309 normed = normcase(fname) |
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310 fname = normalize(fname, True, True) |
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311 foldmap[normed] = fname |
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312 fmode = entry['mode'] |
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313 fexists = entry['exists'] |
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314 kind = getkind(fmode) |
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315 |
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316 if not fexists: |
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317 # if marked as deleted and we don't already have a change |
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318 # record, mark it as deleted. If we already have an entry |
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319 # for fname then it was either part of walkexplicit or was |
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320 # an earlier result that was a case change |
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321 if fname not in results and fname in dmap and ( |
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322 matchalways or matchfn(fname)): |
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323 results[fname] = None |
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324 elif kind == dirkind: |
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325 if fname in dmap and (matchalways or matchfn(fname)): |
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326 results[fname] = None |
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327 elif kind == regkind or kind == lnkkind: |
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328 if fname in dmap: |
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329 if matchalways or matchfn(fname): |
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330 results[fname] = entry |
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331 elif (matchalways or matchfn(fname)) and not ignore(fname): |
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332 results[fname] = entry |
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333 elif fname in dmap and (matchalways or matchfn(fname)): |
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334 results[fname] = None |
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335 |
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336 # step 3: query notable files we don't already know about |
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337 # XXX try not to iterate over the entire dmap |
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338 if normalize: |
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339 # any notable files that have changed case will already be handled |
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340 # above, so just check membership in the foldmap |
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341 notefiles = set((normalize(f, True, True) for f in notefiles |
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342 if normcase(f) not in foldmap)) |
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343 visit = set((f for f in notefiles if (f not in results and matchfn(f) |
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344 and (f in dmap or not ignore(f))))) |
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345 |
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346 if nonnormalset is not None and not fresh_instance: |
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347 if matchalways: |
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348 visit.update(f for f in nonnormalset if f not in results) |
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349 visit.update(f for f in copymap if f not in results) |
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350 else: |
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351 visit.update(f for f in nonnormalset |
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352 if f not in results and matchfn(f)) |
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353 visit.update(f for f in copymap |
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354 if f not in results and matchfn(f)) |
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355 else: |
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356 if matchalways: |
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357 visit.update(f for f, st in dmap.iteritems() |
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358 if (f not in results and |
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359 (st[2] < 0 or st[0] != 'n' or fresh_instance))) |
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360 visit.update(f for f in copymap if f not in results) |
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361 else: |
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362 visit.update(f for f, st in dmap.iteritems() |
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363 if (f not in results and |
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364 (st[2] < 0 or st[0] != 'n' or fresh_instance) |
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365 and matchfn(f))) |
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366 visit.update(f for f in copymap |
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367 if f not in results and matchfn(f)) |
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368 |
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369 audit = pathutil.pathauditor(self._root).check |
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370 auditpass = [f for f in visit if audit(f)] |
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|
371 auditpass.sort() |
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372 auditfail = visit.difference(auditpass) |
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373 for f in auditfail: |
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374 results[f] = None |
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|
375 |
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376 nf = iter(auditpass).next |
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377 for st in util.statfiles([join(f) for f in auditpass]): |
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378 f = nf() |
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379 if st or f in dmap: |
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380 results[f] = st |
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381 |
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382 for s in subrepos: |
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383 del results[s] |
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384 del results['.hg'] |
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|
385 return results |
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parents:
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changeset
|
386 |
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changeset
|
387 def overridestatus( |
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changeset
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388 orig, self, node1='.', node2=None, match=None, ignored=False, |
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parents:
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389 clean=False, unknown=False, listsubrepos=False): |
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parents:
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|
390 listignored = ignored |
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parents:
diff
changeset
|
391 listclean = clean |
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parents:
diff
changeset
|
392 listunknown = unknown |
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parents:
diff
changeset
|
393 |
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diff
changeset
|
394 def _cmpsets(l1, l2): |
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parents:
diff
changeset
|
395 try: |
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396 if 'FSMONITOR_LOG_FILE' in encoding.environ: |
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397 fn = encoding.environ['FSMONITOR_LOG_FILE'] |
28433
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398 f = open(fn, 'wb') |
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|
399 else: |
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parents:
diff
changeset
|
400 fn = 'fsmonitorfail.log' |
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parents:
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changeset
|
401 f = self.opener(fn, 'wb') |
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parents:
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|
402 except (IOError, OSError): |
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changeset
|
403 self.ui.warn(_('warning: unable to write to %s\n') % fn) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
404 return |
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parents:
diff
changeset
|
405 |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
406 try: |
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parents:
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changeset
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407 for i, (s1, s2) in enumerate(zip(l1, l2)): |
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parents:
diff
changeset
|
408 if set(s1) != set(s2): |
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parents:
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changeset
|
409 f.write('sets at position %d are unequal\n' % i) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
410 f.write('watchman returned: %s\n' % s1) |
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parents:
diff
changeset
|
411 f.write('stat returned: %s\n' % s2) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
412 finally: |
3b67f27bb908
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parents:
diff
changeset
|
413 f.close() |
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parents:
diff
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|
414 |
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parents:
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415 if isinstance(node1, context.changectx): |
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parents:
diff
changeset
|
416 ctx1 = node1 |
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parents:
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417 else: |
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parents:
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418 ctx1 = self[node1] |
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parents:
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419 if isinstance(node2, context.changectx): |
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parents:
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changeset
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420 ctx2 = node2 |
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parents:
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421 else: |
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parents:
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changeset
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422 ctx2 = self[node2] |
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parents:
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423 |
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424 working = ctx2.rev() is None |
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parents:
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425 parentworking = working and ctx1 == self['.'] |
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parents:
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426 match = match or matchmod.always(self.root, self.getcwd()) |
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parents:
diff
changeset
|
427 |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
428 # Maybe we can use this opportunity to update Watchman's state. |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
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429 # Mercurial uses workingcommitctx and/or memctx to represent the part of |
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parents:
diff
changeset
|
430 # the workingctx that is to be committed. So don't update the state in |
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parents:
diff
changeset
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431 # that case. |
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parents:
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changeset
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432 # HG_PENDING is set in the environment when the dirstate is being updated |
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parents:
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changeset
|
433 # in the middle of a transaction; we must not update our state in that |
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parents:
diff
changeset
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434 # case, or we risk forgetting about changes in the working copy. |
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parents:
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435 updatestate = (parentworking and match.always() and |
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parents:
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436 not isinstance(ctx2, (context.workingcommitctx, |
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parents:
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437 context.memctx)) and |
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Pulkit Goyal <7895pulkit@gmail.com>
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438 'HG_PENDING' not in encoding.environ) |
28433
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parents:
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changeset
|
439 |
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parents:
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440 try: |
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441 if self._fsmonitorstate.walk_on_invalidate: |
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parents:
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changeset
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442 # Use a short timeout to query the current clock. If that |
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parents:
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443 # takes too long then we assume that the service will be slow |
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parents:
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changeset
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444 # to answer our query. |
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parents:
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445 # walk_on_invalidate indicates that we prefer to walk the |
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parents:
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changeset
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446 # tree ourselves because we can ignore portions that Watchman |
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Martijn Pieters <mjpieters@fb.com>
parents:
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changeset
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447 # cannot and we tend to be faster in the warmer buffer cache |
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parents:
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448 # cases. |
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449 self._watchmanclient.settimeout(0.1) |
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parents:
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450 else: |
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parents:
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changeset
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451 # Give Watchman more time to potentially complete its walk |
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parents:
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changeset
|
452 # and return the initial clock. In this mode we assume that |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
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453 # the filesystem will be slower than parsing a potentially |
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parents:
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changeset
|
454 # very large Watchman result set. |
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parents:
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|
455 self._watchmanclient.settimeout( |
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parents:
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|
456 self._fsmonitorstate.timeout + 0.1) |
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parents:
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457 startclock = self._watchmanclient.getcurrentclock() |
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parents:
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458 except Exception as ex: |
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parents:
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459 self._watchmanclient.clearconnection() |
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parents:
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460 _handleunavailable(self.ui, self._fsmonitorstate, ex) |
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parents:
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|
461 # boo, Watchman failed. bail |
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parents:
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changeset
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462 return orig(node1, node2, match, listignored, listclean, |
3b67f27bb908
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parents:
diff
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|
463 listunknown, listsubrepos) |
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parents:
diff
changeset
|
464 |
3b67f27bb908
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parents:
diff
changeset
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465 if updatestate: |
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parents:
diff
changeset
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466 # We need info about unknown files. This may make things slower the |
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parents:
diff
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467 # first time, but whatever. |
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parents:
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|
468 stateunknown = True |
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parents:
diff
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|
469 else: |
3b67f27bb908
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parents:
diff
changeset
|
470 stateunknown = listunknown |
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parents:
diff
changeset
|
471 |
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parents:
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472 r = orig(node1, node2, match, listignored, listclean, stateunknown, |
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parents:
diff
changeset
|
473 listsubrepos) |
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parents:
diff
changeset
|
474 modified, added, removed, deleted, unknown, ignored, clean = r |
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parents:
diff
changeset
|
475 |
3b67f27bb908
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parents:
diff
changeset
|
476 if updatestate: |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
477 notefiles = modified + added + removed + deleted + unknown |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
478 self._fsmonitorstate.set( |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
479 self._fsmonitorstate.getlastclock() or startclock, |
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parents:
diff
changeset
|
480 _hashignore(self.dirstate._ignore), |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
481 notefiles) |
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parents:
diff
changeset
|
482 |
3b67f27bb908
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parents:
diff
changeset
|
483 if not listunknown: |
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parents:
diff
changeset
|
484 unknown = [] |
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parents:
diff
changeset
|
485 |
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parents:
diff
changeset
|
486 # don't do paranoid checks if we're not going to query Watchman anyway |
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parents:
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changeset
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487 full = listclean or match.traversedir is not None |
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parents:
diff
changeset
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488 if self._fsmonitorstate.mode == 'paranoid' and not full: |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
489 # run status again and fall back to the old walk this time |
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parents:
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changeset
|
490 self.dirstate._fsmonitordisable = True |
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parents:
diff
changeset
|
491 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
492 # shut the UI up |
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parents:
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changeset
|
493 quiet = self.ui.quiet |
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parents:
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494 self.ui.quiet = True |
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parents:
diff
changeset
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495 fout, ferr = self.ui.fout, self.ui.ferr |
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parents:
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changeset
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496 self.ui.fout = self.ui.ferr = open(os.devnull, 'wb') |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
497 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
498 try: |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
499 rv2 = orig( |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
500 node1, node2, match, listignored, listclean, listunknown, |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
501 listsubrepos) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
502 finally: |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
503 self.dirstate._fsmonitordisable = False |
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Martijn Pieters <mjpieters@fb.com>
parents:
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changeset
|
504 self.ui.quiet = quiet |
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parents:
diff
changeset
|
505 self.ui.fout, self.ui.ferr = fout, ferr |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
506 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
507 # clean isn't tested since it's set to True above |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
508 _cmpsets([modified, added, removed, deleted, unknown, ignored, clean], |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
509 rv2) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
510 modified, added, removed, deleted, unknown, ignored, clean = rv2 |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
511 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
512 return scmutil.status( |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
513 modified, added, removed, deleted, unknown, ignored, clean) |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
514 |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
515 def makedirstate(cls): |
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parents:
diff
changeset
|
516 class fsmonitordirstate(cls): |
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parents:
diff
changeset
|
517 def _fsmonitorinit(self, fsmonitorstate, watchmanclient): |
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parents:
diff
changeset
|
518 # _fsmonitordisable is used in paranoid mode |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
519 self._fsmonitordisable = False |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
520 self._fsmonitorstate = fsmonitorstate |
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parents:
diff
changeset
|
521 self._watchmanclient = watchmanclient |
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parents:
diff
changeset
|
522 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
523 def walk(self, *args, **kwargs): |
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parents:
diff
changeset
|
524 orig = super(fsmonitordirstate, self).walk |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
525 if self._fsmonitordisable: |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
526 return orig(*args, **kwargs) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
527 return overridewalk(orig, self, *args, **kwargs) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
528 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
529 def rebuild(self, *args, **kwargs): |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
530 self._fsmonitorstate.invalidate() |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
531 return super(fsmonitordirstate, self).rebuild(*args, **kwargs) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
532 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
533 def invalidate(self, *args, **kwargs): |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
534 self._fsmonitorstate.invalidate() |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
535 return super(fsmonitordirstate, self).invalidate(*args, **kwargs) |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
536 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
537 return fsmonitordirstate |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
538 |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
539 def wrapdirstate(orig, self): |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
540 ds = orig(self) |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
541 # only override the dirstate when Watchman is available for the repo |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
542 if util.safehasattr(self, '_fsmonitorstate'): |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
543 ds.__class__ = makedirstate(ds.__class__) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
544 ds._fsmonitorinit(self._fsmonitorstate, self._watchmanclient) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
545 return ds |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
546 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
547 def extsetup(ui): |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
548 wrapfilecache(localrepo.localrepository, 'dirstate', wrapdirstate) |
30666
6ada1658fc6b
py3: use python 3 compatible variables in hgext/fsmontor/__init__.py
Pulkit Goyal <7895pulkit@gmail.com>
parents:
30332
diff
changeset
|
549 if pycompat.sysplatform == 'darwin': |
28433
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
550 # An assist for avoiding the dangling-symlink fsevents bug |
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551 extensions.wrapfunction(os, 'symlink', wrapsymlink) |
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552 |
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553 extensions.wrapfunction(merge, 'update', wrapupdate) |
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554 |
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555 def wrapsymlink(orig, source, link_name): |
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parents:
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556 ''' if we create a dangling symlink, also touch the parent dir |
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557 to encourage fsevents notifications to work more correctly ''' |
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558 try: |
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559 return orig(source, link_name) |
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|
560 finally: |
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561 try: |
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parents:
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562 os.utime(os.path.dirname(link_name), None) |
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563 except OSError: |
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parents:
diff
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564 pass |
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|
565 |
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566 class state_update(object): |
30332
318a24b52eeb
spelling: fixes of non-dictionary words
Mads Kiilerich <madski@unity3d.com>
parents:
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567 ''' This context manager is responsible for dispatching the state-enter |
28443
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568 and state-leave signals to the watchman service ''' |
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569 |
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570 def __init__(self, repo, node, distance, partial): |
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571 self.repo = repo |
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572 self.node = node |
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573 self.distance = distance |
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574 self.partial = partial |
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575 |
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576 def __enter__(self): |
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577 self._state('state-enter') |
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578 return self |
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|
579 |
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580 def __exit__(self, type_, value, tb): |
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581 status = 'ok' if type_ is None else 'failed' |
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582 self._state('state-leave', status=status) |
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583 |
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584 def _state(self, cmd, status='ok'): |
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585 if not util.safehasattr(self.repo, '_watchmanclient'): |
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changeset
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586 return |
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changeset
|
587 try: |
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|
588 commithash = self.repo[self.node].hex() |
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589 self.repo._watchmanclient.command(cmd, { |
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Martijn Pieters <mjpieters@fb.com>
parents:
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|
590 'name': 'hg.update', |
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parents:
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|
591 'metadata': { |
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592 # the target revision |
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diff
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|
593 'rev': commithash, |
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594 # approximate number of commits between current and target |
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595 'distance': self.distance, |
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parents:
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596 # success/failure (only really meaningful for state-leave) |
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597 'status': status, |
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|
598 # whether the working copy parent is changing |
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Martijn Pieters <mjpieters@fb.com>
parents:
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diff
changeset
|
599 'partial': self.partial, |
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fsmonitor: hook up state-enter, state-leave signals
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diff
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|
600 }}) |
49d65663d7e4
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parents:
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diff
changeset
|
601 except Exception as e: |
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fsmonitor: hook up state-enter, state-leave signals
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parents:
28433
diff
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|
602 # Swallow any errors; fire and forget |
49d65663d7e4
fsmonitor: hook up state-enter, state-leave signals
Martijn Pieters <mjpieters@fb.com>
parents:
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|
603 self.repo.ui.log( |
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fsmonitor: hook up state-enter, state-leave signals
Martijn Pieters <mjpieters@fb.com>
parents:
28433
diff
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|
604 'watchman', 'Exception %s while running %s\n', e, cmd) |
49d65663d7e4
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parents:
28433
diff
changeset
|
605 |
49d65663d7e4
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parents:
28433
diff
changeset
|
606 # Bracket working copy updates with calls to the watchman state-enter |
49d65663d7e4
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Martijn Pieters <mjpieters@fb.com>
parents:
28433
diff
changeset
|
607 # and state-leave commands. This allows clients to perform more intelligent |
49d65663d7e4
fsmonitor: hook up state-enter, state-leave signals
Martijn Pieters <mjpieters@fb.com>
parents:
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diff
changeset
|
608 # settling during bulk file change scenarios |
49d65663d7e4
fsmonitor: hook up state-enter, state-leave signals
Martijn Pieters <mjpieters@fb.com>
parents:
28433
diff
changeset
|
609 # https://facebook.github.io/watchman/docs/cmd/subscribe.html#advanced-settling |
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parents:
28433
diff
changeset
|
610 def wrapupdate(orig, repo, node, branchmerge, force, ancestor=None, |
49d65663d7e4
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parents:
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diff
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|
611 mergeancestor=False, labels=None, matcher=None, **kwargs): |
49d65663d7e4
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parents:
28433
diff
changeset
|
612 |
49d65663d7e4
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parents:
28433
diff
changeset
|
613 distance = 0 |
49d65663d7e4
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parents:
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diff
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|
614 partial = True |
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parents:
28433
diff
changeset
|
615 if matcher is None or matcher.always(): |
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parents:
28433
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|
616 partial = False |
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parents:
28433
diff
changeset
|
617 wc = repo[None] |
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parents:
28433
diff
changeset
|
618 parents = wc.parents() |
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fsmonitor: hook up state-enter, state-leave signals
Martijn Pieters <mjpieters@fb.com>
parents:
28433
diff
changeset
|
619 if len(parents) == 2: |
49d65663d7e4
fsmonitor: hook up state-enter, state-leave signals
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parents:
28433
diff
changeset
|
620 anc = repo.changelog.ancestor(parents[0].node(), parents[1].node()) |
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Martijn Pieters <mjpieters@fb.com>
parents:
28433
diff
changeset
|
621 ancrev = repo[anc].rev() |
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Martijn Pieters <mjpieters@fb.com>
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diff
changeset
|
622 distance = abs(repo[node].rev() - ancrev) |
49d65663d7e4
fsmonitor: hook up state-enter, state-leave signals
Martijn Pieters <mjpieters@fb.com>
parents:
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diff
changeset
|
623 elif len(parents) == 1: |
49d65663d7e4
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parents:
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diff
changeset
|
624 distance = abs(repo[node].rev() - parents[0].rev()) |
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parents:
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diff
changeset
|
625 |
49d65663d7e4
fsmonitor: hook up state-enter, state-leave signals
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parents:
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diff
changeset
|
626 with state_update(repo, node, distance, partial): |
49d65663d7e4
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28433
diff
changeset
|
627 return orig( |
49d65663d7e4
fsmonitor: hook up state-enter, state-leave signals
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parents:
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diff
changeset
|
628 repo, node, branchmerge, force, ancestor, mergeancestor, |
49d65663d7e4
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Martijn Pieters <mjpieters@fb.com>
parents:
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diff
changeset
|
629 labels, matcher, *kwargs) |
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parents:
28433
diff
changeset
|
630 |
28433
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fsmonitor: new experimental extension
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parents:
diff
changeset
|
631 def reposetup(ui, repo): |
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parents:
diff
changeset
|
632 # We don't work with largefiles or inotify |
3b67f27bb908
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parents:
diff
changeset
|
633 exts = extensions.enabled() |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
634 for ext in _blacklist: |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
635 if ext in exts: |
3b67f27bb908
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parents:
diff
changeset
|
636 ui.warn(_('The fsmonitor extension is incompatible with the %s ' |
3b67f27bb908
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parents:
diff
changeset
|
637 'extension and has been disabled.\n') % ext) |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
638 return |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
639 |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
640 if util.safehasattr(repo, 'dirstate'): |
3b67f27bb908
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parents:
diff
changeset
|
641 # We don't work with subrepos either. Note that we can get passed in |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
642 # e.g. a statichttprepo, which throws on trying to access the substate. |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
643 # XXX This sucks. |
3b67f27bb908
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parents:
diff
changeset
|
644 try: |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
645 # if repo[None].substate can cause a dirstate parse, which is too |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
646 # slow. Instead, look for a file called hgsubstate, |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
647 if repo.wvfs.exists('.hgsubstate') or repo.wvfs.exists('.hgsub'): |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
648 return |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
649 except AttributeError: |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
650 return |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
651 |
3b67f27bb908
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parents:
diff
changeset
|
652 fsmonitorstate = state.state(repo) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
653 if fsmonitorstate.mode == 'off': |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
654 return |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
655 |
3b67f27bb908
fsmonitor: new experimental extension
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parents:
diff
changeset
|
656 try: |
3b67f27bb908
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parents:
diff
changeset
|
657 client = watchmanclient.client(repo) |
3b67f27bb908
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parents:
diff
changeset
|
658 except Exception as ex: |
3b67f27bb908
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parents:
diff
changeset
|
659 _handleunavailable(ui, fsmonitorstate, ex) |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
660 return |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
661 |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
662 repo._fsmonitorstate = fsmonitorstate |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
663 repo._watchmanclient = client |
3b67f27bb908
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parents:
diff
changeset
|
664 |
3b67f27bb908
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parents:
diff
changeset
|
665 # at this point since fsmonitorstate wasn't present, repo.dirstate is |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
666 # not a fsmonitordirstate |
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parents:
diff
changeset
|
667 repo.dirstate.__class__ = makedirstate(repo.dirstate.__class__) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
668 # nuke the dirstate so that _fsmonitorinit and subsequent configuration |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
669 # changes take effect on it |
3b67f27bb908
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diff
changeset
|
670 del repo._filecache['dirstate'] |
3b67f27bb908
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parents:
diff
changeset
|
671 delattr(repo.unfiltered(), 'dirstate') |
3b67f27bb908
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parents:
diff
changeset
|
672 |
3b67f27bb908
fsmonitor: new experimental extension
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parents:
diff
changeset
|
673 class fsmonitorrepo(repo.__class__): |
3b67f27bb908
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parents:
diff
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|
674 def status(self, *args, **kwargs): |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
675 orig = super(fsmonitorrepo, self).status |
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676 return overridestatus(orig, self, *args, **kwargs) |
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677 |
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678 repo.__class__ = fsmonitorrepo |
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679 |
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680 def wrapfilecache(cls, propname, wrapper): |
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681 """Wraps a filecache property. These can't be wrapped using the normal |
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682 wrapfunction. This should eventually go into upstream Mercurial. |
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683 """ |
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684 assert callable(wrapper) |
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685 for currcls in cls.__mro__: |
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686 if propname in currcls.__dict__: |
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687 origfn = currcls.__dict__[propname].func |
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688 assert callable(origfn) |
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689 def wrap(*args, **kwargs): |
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690 return wrapper(origfn, *args, **kwargs) |
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691 currcls.__dict__[propname].func = wrap |
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692 break |
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693 |
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694 if currcls is object: |
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695 raise AttributeError( |
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696 _("type '%s' has no property '%s'") % (cls, propname)) |