annotate mercurial/branchmap.py @ 47902:4cade5e944c2

dirstatemap: use the default code to handle "removed" case This one is very easy. Differential Revision: https://phab.mercurial-scm.org/D11327
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 16 Jul 2021 17:23:40 +0200
parents bea4717415c0
children 8e5effbf52d0
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1 # branchmap.py - logic to computes, maintain and stores branchmap for local repo
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2 #
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3 # Copyright 2005-2007 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 absolute_import
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9
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10 import struct
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11
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12 from .node import (
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13 bin,
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14 hex,
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15 nullrev,
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16 )
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17 from . import (
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18 encoding,
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19 error,
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20 pycompat,
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21 scmutil,
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22 util,
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23 )
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24 from .utils import (
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25 repoviewutil,
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26 stringutil,
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27 )
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28
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29 if pycompat.TYPE_CHECKING:
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30 from typing import (
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31 Any,
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32 Callable,
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33 Dict,
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34 Iterable,
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35 List,
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36 Optional,
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37 Set,
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38 Tuple,
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39 Union,
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40 )
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41 from . import localrepo
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42
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43 assert any(
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44 (
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45 Any,
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46 Callable,
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47 Dict,
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48 Iterable,
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49 List,
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50 Optional,
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51 Set,
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52 Tuple,
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53 Union,
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54 localrepo,
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55 )
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56 )
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57
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58 subsettable = repoviewutil.subsettable
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59
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60 calcsize = struct.calcsize
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61 pack_into = struct.pack_into
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62 unpack_from = struct.unpack_from
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63
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64
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65 class BranchMapCache(object):
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66 """mapping of filtered views of repo with their branchcache"""
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67
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68 def __init__(self):
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69 self._per_filter = {}
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70
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71 def __getitem__(self, repo):
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72 self.updatecache(repo)
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73 return self._per_filter[repo.filtername]
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74
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75 def updatecache(self, repo):
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76 """Update the cache for the given filtered view on a repository"""
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77 # This can trigger updates for the caches for subsets of the filtered
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78 # view, e.g. when there is no cache for this filtered view or the cache
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79 # is stale.
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80
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81 cl = repo.changelog
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82 filtername = repo.filtername
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83 bcache = self._per_filter.get(filtername)
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84 if bcache is None or not bcache.validfor(repo):
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85 # cache object missing or cache object stale? Read from disk
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86 bcache = branchcache.fromfile(repo)
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87
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88 revs = []
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89 if bcache is None:
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90 # no (fresh) cache available anymore, perhaps we can re-use
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91 # the cache for a subset, then extend that to add info on missing
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92 # revisions.
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93 subsetname = subsettable.get(filtername)
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94 if subsetname is not None:
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95 subset = repo.filtered(subsetname)
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96 bcache = self[subset].copy()
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97 extrarevs = subset.changelog.filteredrevs - cl.filteredrevs
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98 revs.extend(r for r in extrarevs if r <= bcache.tiprev)
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99 else:
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100 # nothing to fall back on, start empty.
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101 bcache = branchcache(repo)
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102
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103 revs.extend(cl.revs(start=bcache.tiprev + 1))
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104 if revs:
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105 bcache.update(repo, revs)
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106
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107 assert bcache.validfor(repo), filtername
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108 self._per_filter[repo.filtername] = bcache
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109
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110 def replace(self, repo, remotebranchmap):
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111 """Replace the branchmap cache for a repo with a branch mapping.
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112
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113 This is likely only called during clone with a branch map from a
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114 remote.
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115
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116 """
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117 cl = repo.changelog
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118 clrev = cl.rev
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119 clbranchinfo = cl.branchinfo
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120 rbheads = []
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121 closed = set()
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122 for bheads in pycompat.itervalues(remotebranchmap):
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123 rbheads += bheads
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124 for h in bheads:
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125 r = clrev(h)
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126 b, c = clbranchinfo(r)
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127 if c:
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128 closed.add(h)
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129
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130 if rbheads:
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131 rtiprev = max((int(clrev(node)) for node in rbheads))
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132 cache = branchcache(
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133 repo,
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134 remotebranchmap,
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135 repo[rtiprev].node(),
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136 rtiprev,
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137 closednodes=closed,
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138 )
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139
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140 # Try to stick it as low as possible
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141 # filter above served are unlikely to be fetch from a clone
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142 for candidate in (b'base', b'immutable', b'served'):
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143 rview = repo.filtered(candidate)
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144 if cache.validfor(rview):
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145 self._per_filter[candidate] = cache
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146 cache.write(rview)
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147 return
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148
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149 def clear(self):
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150 self._per_filter.clear()
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151
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152
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153 def _unknownnode(node):
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154 """raises ValueError when branchcache found a node which does not exists"""
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155 raise ValueError('node %s does not exist' % pycompat.sysstr(hex(node)))
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156
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157
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158 def _branchcachedesc(repo):
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159 if repo.filtername is not None:
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160 return b'branch cache (%s)' % repo.filtername
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161 else:
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162 return b'branch cache'
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163
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164
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165 class branchcache(object):
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166 """A dict like object that hold branches heads cache.
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167
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168 This cache is used to avoid costly computations to determine all the
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169 branch heads of a repo.
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170
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171 The cache is serialized on disk in the following format:
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172
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173 <tip hex node> <tip rev number> [optional filtered repo hex hash]
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174 <branch head hex node> <open/closed state> <branch name>
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175 <branch head hex node> <open/closed state> <branch name>
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176 ...
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177
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178 The first line is used to check if the cache is still valid. If the
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179 branch cache is for a filtered repo view, an optional third hash is
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180 included that hashes the hashes of all filtered revisions.
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181
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182 The open/closed state is represented by a single letter 'o' or 'c'.
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183 This field can be used to avoid changelog reads when determining if a
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184 branch head closes a branch or not.
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185 """
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186
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187 def __init__(
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188 self,
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189 repo,
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190 entries=(),
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191 tipnode=None,
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192 tiprev=nullrev,
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193 filteredhash=None,
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194 closednodes=None,
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195 hasnode=None,
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196 ):
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197 # type: (localrepo.localrepository, Union[Dict[bytes, List[bytes]], Iterable[Tuple[bytes, List[bytes]]]], bytes, int, Optional[bytes], Optional[Set[bytes]], Optional[Callable[[bytes], bool]]) -> None
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198 """hasnode is a function which can be used to verify whether changelog
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199 has a given node or not. If it's not provided, we assume that every node
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200 we have exists in changelog"""
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201 self._repo = repo
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diff changeset
202 if tipnode is None:
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203 self.tipnode = repo.nullid
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204 else:
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205 self.tipnode = tipnode
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206 self.tiprev = tiprev
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207 self.filteredhash = filteredhash
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208 # closednodes is a set of nodes that close their branch. If the branch
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209 # cache has been updated, it may contain nodes that are no longer
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diff changeset
210 # heads.
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211 if closednodes is None:
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212 self._closednodes = set()
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213 else:
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214 self._closednodes = closednodes
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215 self._entries = dict(entries)
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216 # whether closed nodes are verified or not
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217 self._closedverified = False
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218 # branches for which nodes are verified
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219 self._verifiedbranches = set()
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220 self._hasnode = hasnode
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221 if self._hasnode is None:
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diff changeset
222 self._hasnode = lambda x: True
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223
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224 def _verifyclosed(self):
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225 """verify the closed nodes we have"""
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226 if self._closedverified:
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227 return
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228 for node in self._closednodes:
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diff changeset
229 if not self._hasnode(node):
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230 _unknownnode(node)
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231
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232 self._closedverified = True
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233
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234 def _verifybranch(self, branch):
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235 """verify head nodes for the given branch."""
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diff changeset
236 if branch not in self._entries or branch in self._verifiedbranches:
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diff changeset
237 return
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diff changeset
238 for n in self._entries[branch]:
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diff changeset
239 if not self._hasnode(n):
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diff changeset
240 _unknownnode(n)
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241
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diff changeset
242 self._verifiedbranches.add(branch)
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diff changeset
243
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diff changeset
244 def _verifyall(self):
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245 """verifies nodes of all the branches"""
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parents: 42132
diff changeset
246 needverification = set(self._entries.keys()) - self._verifiedbranches
75e8e16ca107 branchcache: only iterate over branches which needs to be verified
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diff changeset
247 for b in needverification:
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diff changeset
248 self._verifybranch(b)
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249
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250 def __iter__(self):
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251 return iter(self._entries)
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252
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diff changeset
253 def __setitem__(self, key, value):
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diff changeset
254 self._entries[key] = value
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diff changeset
255
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diff changeset
256 def __getitem__(self, key):
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diff changeset
257 self._verifybranch(key)
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diff changeset
258 return self._entries[key]
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diff changeset
259
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f0def07fa82f branchmap: implement __contains__()
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diff changeset
260 def __contains__(self, key):
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diff changeset
261 self._verifybranch(key)
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diff changeset
262 return key in self._entries
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diff changeset
263
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diff changeset
264 def iteritems(self):
43106
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 43104
diff changeset
265 for k, v in pycompat.iteritems(self._entries):
42134
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parents: 42133
diff changeset
266 self._verifybranch(k)
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diff changeset
267 yield k, v
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diff changeset
268
42603
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Martin von Zweigbergk <martinvonz@google.com>
parents: 42602
diff changeset
269 items = iteritems
3018749a71bb py3: source-transform only call-sites of iteritems(), not definitions
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diff changeset
270
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parents: 42003
diff changeset
271 def hasbranch(self, label):
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diff changeset
272 """checks whether a branch of this name exists or not"""
42121
6578654916ae branchcache: lazily validate nodes from the branchmap
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42120
diff changeset
273 self._verifybranch(label)
42005
b137a6793c51 branchcache: make entries a private attribute
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42004
diff changeset
274 return label in self._entries
42004
0bd730fbcc2b branchcache: introduce hasbranch()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42003
diff changeset
275
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
276 @classmethod
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
277 def fromfile(cls, repo):
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
278 f = None
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
279 try:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
280 f = repo.cachevfs(cls._filename(repo))
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
281 lineiter = iter(f)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
282 cachekey = next(lineiter).rstrip(b'\n').split(b" ", 2)
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
283 last, lrev = cachekey[:2]
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
284 last, lrev = bin(last), int(lrev)
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
285 filteredhash = None
42007
b5511845f9d5 branchcache: have a hasnode function to validate nodes
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42006
diff changeset
286 hasnode = repo.changelog.hasnode
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
287 if len(cachekey) > 2:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
288 filteredhash = bin(cachekey[2])
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
289 bcache = cls(
46780
6266d19556ad node: introduce nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 46372
diff changeset
290 repo,
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
291 tipnode=last,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
292 tiprev=lrev,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
293 filteredhash=filteredhash,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
294 hasnode=hasnode,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
295 )
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
296 if not bcache.validfor(repo):
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
297 # invalidate the cache
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43499
diff changeset
298 raise ValueError('tip differs')
41808
8ad46ac6728e branchmap: prevent reading the file twice through different iterators
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41797
diff changeset
299 bcache.load(repo, lineiter)
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
300 except (IOError, OSError):
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
301 return None
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
302
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
303 except Exception as inst:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
304 if repo.ui.debugflag:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
305 msg = b'invalid %s: %s\n'
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
306 repo.ui.debug(
43499
1a47fe4bc154 branchmap: pytype is confused about bytestr
Augie Fackler <augie@google.com>
parents: 43106
diff changeset
307 msg
1a47fe4bc154 branchmap: pytype is confused about bytestr
Augie Fackler <augie@google.com>
parents: 43106
diff changeset
308 % (
1a47fe4bc154 branchmap: pytype is confused about bytestr
Augie Fackler <augie@google.com>
parents: 43106
diff changeset
309 _branchcachedesc(repo),
46685
799973a44c82 branchmap: force Exception to bytes before logging
Matt Harbison <matt_harbison@yahoo.com>
parents: 46254
diff changeset
310 stringutil.forcebytestr(inst),
43499
1a47fe4bc154 branchmap: pytype is confused about bytestr
Augie Fackler <augie@google.com>
parents: 43106
diff changeset
311 )
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
312 )
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
313 bcache = None
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
314
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
315 finally:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
316 if f:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
317 f.close()
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
318
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
319 return bcache
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
320
41808
8ad46ac6728e branchmap: prevent reading the file twice through different iterators
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41797
diff changeset
321 def load(self, repo, lineiter):
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44452
diff changeset
322 """fully loads the branchcache by reading from the file using the line
41808
8ad46ac6728e branchmap: prevent reading the file twice through different iterators
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41797
diff changeset
323 iterator passed"""
41797
68bbcc70e274 branchcache: move loading of branch names and nodes into it's own function
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41759
diff changeset
324 for line in lineiter:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
325 line = line.rstrip(b'\n')
41797
68bbcc70e274 branchcache: move loading of branch names and nodes into it's own function
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41759
diff changeset
326 if not line:
68bbcc70e274 branchcache: move loading of branch names and nodes into it's own function
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41759
diff changeset
327 continue
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
328 node, state, label = line.split(b" ", 2)
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
329 if state not in b'oc':
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43499
diff changeset
330 raise ValueError('invalid branch state')
41797
68bbcc70e274 branchcache: move loading of branch names and nodes into it's own function
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41759
diff changeset
331 label = encoding.tolocal(label.strip())
68bbcc70e274 branchcache: move loading of branch names and nodes into it's own function
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41759
diff changeset
332 node = bin(node)
42005
b137a6793c51 branchcache: make entries a private attribute
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42004
diff changeset
333 self._entries.setdefault(label, []).append(node)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
334 if state == b'c':
41797
68bbcc70e274 branchcache: move loading of branch names and nodes into it's own function
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41759
diff changeset
335 self._closednodes.add(node)
68bbcc70e274 branchcache: move loading of branch names and nodes into it's own function
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41759
diff changeset
336
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
337 @staticmethod
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
338 def _filename(repo):
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
339 """name of a branchcache file for a given repo or repoview"""
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
340 filename = b"branch2"
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
341 if repo.filtername:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
342 filename = b'%s-%s' % (filename, repo.filtername)
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
343 return filename
18124
79db6d40bced branchmap: store branchcache in a dedicated object
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18121
diff changeset
344
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
345 def validfor(self, repo):
18644
3e92772d5383 spelling: fix some minor issues found by spell checker
Mads Kiilerich <mads@kiilerich.com>
parents: 18451
diff changeset
346 """Is the cache content valid regarding a repo
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
347
18644
3e92772d5383 spelling: fix some minor issues found by spell checker
Mads Kiilerich <mads@kiilerich.com>
parents: 18451
diff changeset
348 - False when cached tipnode is unknown or if we detect a strip.
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
349 - True when cache is up to date or a subset of current repo."""
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
350 try:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
351 return (self.tipnode == repo.changelog.node(self.tiprev)) and (
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
352 self.filteredhash == scmutil.filteredhash(repo, self.tiprev)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
353 )
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
354 except IndexError:
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
355 return False
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
356
20186
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
357 def _branchtip(self, heads):
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44452
diff changeset
358 """Return tuple with last open head in heads and false,
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44452
diff changeset
359 otherwise return last closed head and true."""
20186
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
360 tip = heads[-1]
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
361 closed = True
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
362 for h in reversed(heads):
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
363 if h not in self._closednodes:
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
364 tip = h
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
365 closed = False
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
366 break
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
367 return tip, closed
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
368
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
369 def branchtip(self, branch):
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44452
diff changeset
370 """Return the tipmost open head on branch head, otherwise return the
20245
4edd179fefb8 help: branch names primarily denote the tipmost unclosed branch head
Mads Kiilerich <madski@unity3d.com>
parents: 20190
diff changeset
371 tipmost closed head on branch.
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44452
diff changeset
372 Raise KeyError for unknown branch."""
20186
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
373 return self._branchtip(self[branch])[0]
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
374
34074
abf91c4f9608 branches: correctly show inactive multiheaded branches
the31k <the31k@thethirty.one>
parents: 33663
diff changeset
375 def iteropen(self, nodes):
abf91c4f9608 branches: correctly show inactive multiheaded branches
the31k <the31k@thethirty.one>
parents: 33663
diff changeset
376 return (n for n in nodes if n not in self._closednodes)
abf91c4f9608 branches: correctly show inactive multiheaded branches
the31k <the31k@thethirty.one>
parents: 33663
diff changeset
377
20188
3a3727829607 branchmap: introduce branchheads() method
Brodie Rao <brodie@sf.io>
parents: 20186
diff changeset
378 def branchheads(self, branch, closed=False):
42121
6578654916ae branchcache: lazily validate nodes from the branchmap
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42120
diff changeset
379 self._verifybranch(branch)
42112
29c22496dd97 branchmap: prevent using __getitem__() in branchheads()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42111
diff changeset
380 heads = self._entries[branch]
20188
3a3727829607 branchmap: introduce branchheads() method
Brodie Rao <brodie@sf.io>
parents: 20186
diff changeset
381 if not closed:
34074
abf91c4f9608 branches: correctly show inactive multiheaded branches
the31k <the31k@thethirty.one>
parents: 33663
diff changeset
382 heads = list(self.iteropen(heads))
20188
3a3727829607 branchmap: introduce branchheads() method
Brodie Rao <brodie@sf.io>
parents: 20186
diff changeset
383 return heads
3a3727829607 branchmap: introduce branchheads() method
Brodie Rao <brodie@sf.io>
parents: 20186
diff changeset
384
20190
d5d25e541637 branchmap: introduce iterbranches() method
Brodie Rao <brodie@sf.io>
parents: 20188
diff changeset
385 def iterbranches(self):
43106
d783f945a701 py3: finish porting iteritems() to pycompat and remove source transformer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43104
diff changeset
386 for bn, heads in pycompat.iteritems(self):
20190
d5d25e541637 branchmap: introduce iterbranches() method
Brodie Rao <brodie@sf.io>
parents: 20188
diff changeset
387 yield (bn, heads) + self._branchtip(heads)
d5d25e541637 branchmap: introduce iterbranches() method
Brodie Rao <brodie@sf.io>
parents: 20188
diff changeset
388
42002
662ffdde5adf branchcache: rename itervalues() to iterheads()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42001
diff changeset
389 def iterheads(self):
47062
f38bf44e077f black: make codebase compatible with black v21.4b2 and v20.8b1
Kyle Lippincott <spectral@google.com>
parents: 46819
diff changeset
390 """returns all the heads"""
42121
6578654916ae branchcache: lazily validate nodes from the branchmap
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42120
diff changeset
391 self._verifyall()
43104
74802979dd9d py3: define and use pycompat.itervalues()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43077
diff changeset
392 return pycompat.itervalues(self._entries)
42002
662ffdde5adf branchcache: rename itervalues() to iterheads()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42001
diff changeset
393
18232
dd0b636b0b65 branchmap: add a copy method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18218
diff changeset
394 def copy(self):
dd0b636b0b65 branchmap: add a copy method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18218
diff changeset
395 """return an deep copy of the branchcache object"""
42111
f0fa0fc4900a branchmap: dynamically resolve type of branchcache class
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42007
diff changeset
396 return type(self)(
46780
6266d19556ad node: introduce nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 46372
diff changeset
397 self._repo,
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
398 self._entries,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
399 self.tipnode,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
400 self.tiprev,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
401 self.filteredhash,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
402 self._closednodes,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
403 )
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
404
18128
f0d56efaa35a branchmap: make write a method on the branchmap object
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18127
diff changeset
405 def write(self, repo):
f0d56efaa35a branchmap: make write a method on the branchmap object
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18127
diff changeset
406 try:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
407 f = repo.cachevfs(self._filename(repo), b"w", atomictemp=True)
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
408 cachekey = [hex(self.tipnode), b'%d' % self.tiprev]
18184
8d48af68e2ae branchmap: read and write key part related to filtered revision
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18168
diff changeset
409 if self.filteredhash is not None:
8d48af68e2ae branchmap: read and write key part related to filtered revision
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18168
diff changeset
410 cachekey.append(hex(self.filteredhash))
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
411 f.write(b" ".join(cachekey) + b'\n')
21031
05cfcecb3aef branchmap: log events related to branch cache
Gregory Szorc <gregory.szorc@gmail.com>
parents: 20264
diff changeset
412 nodecount = 0
43106
d783f945a701 py3: finish porting iteritems() to pycompat and remove source transformer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43104
diff changeset
413 for label, nodes in sorted(pycompat.iteritems(self._entries)):
41678
9d0d8793e847 branchmap: decode a label only once
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41677
diff changeset
414 label = encoding.fromlocal(label)
18128
f0d56efaa35a branchmap: make write a method on the branchmap object
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18127
diff changeset
415 for node in nodes:
21031
05cfcecb3aef branchmap: log events related to branch cache
Gregory Szorc <gregory.szorc@gmail.com>
parents: 20264
diff changeset
416 nodecount += 1
20185
7d4219512823 branchmap: cache open/closed branch head information
Brodie Rao <brodie@sf.io>
parents: 20181
diff changeset
417 if node in self._closednodes:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
418 state = b'c'
20185
7d4219512823 branchmap: cache open/closed branch head information
Brodie Rao <brodie@sf.io>
parents: 20181
diff changeset
419 else:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
420 state = b'o'
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
421 f.write(b"%s %s %s\n" % (hex(node), state, label))
18128
f0d56efaa35a branchmap: make write a method on the branchmap object
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18127
diff changeset
422 f.close()
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
423 repo.ui.log(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
424 b'branchcache',
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
425 b'wrote %s with %d labels and %d nodes\n',
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
426 _branchcachedesc(repo),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
427 len(self._entries),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
428 nodecount,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
429 )
26587
56b2bcea2529 error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26460
diff changeset
430 except (IOError, OSError, error.Abort) as inst:
34370
d0db41af73c0 branchmap: remove superfluous pass statements
Augie Fackler <augie@google.com>
parents: 34074
diff changeset
431 # Abort may be raised by read only opener, so log and continue
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
432 repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
433 b"couldn't write branch cache: %s\n"
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
434 % stringutil.forcebytestr(inst)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
435 )
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
436
18305
2502a15e033d branchmap: pass revision insteads of changectx to the update function
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18234
diff changeset
437 def update(self, repo, revgen):
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
438 """Given a branchhead cache, self, that may have extra nodes or be
20263
ea4996754d91 branchmap: simplify update code
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 20262
diff changeset
439 missing heads, and a generator of nodes that are strictly a superset of
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
440 heads missing, this function updates self to be correct.
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
441 """
30975
22fbca1d11ed mercurial: switch to util.timer for all interval timings
Simon Farnsworth <simonfar@fb.com>
parents: 29746
diff changeset
442 starttime = util.timer()
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
443 cl = repo.changelog
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
444 # collect new branch entries
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
445 newbranches = {}
24373
59cc09240afb revbranchcache: move out of branchmap onto localrepo
Durham Goode <durham@fb.com>
parents: 24163
diff changeset
446 getbranchinfo = repo.revbranchcache().branchinfo
18307
0eed2546118a branchmap: Save changectx creation during update
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18305
diff changeset
447 for r in revgen:
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
448 branch, closesbranch = getbranchinfo(r)
20262
cf450ee3f8f7 branchmap: stop useless rev -> node -> rev round trip
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 20261
diff changeset
449 newbranches.setdefault(branch, []).append(r)
20185
7d4219512823 branchmap: cache open/closed branch head information
Brodie Rao <brodie@sf.io>
parents: 20181
diff changeset
450 if closesbranch:
20262
cf450ee3f8f7 branchmap: stop useless rev -> node -> rev round trip
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 20261
diff changeset
451 self._closednodes.add(cl.node(r))
22357
9c3c3dc14a65 branchmap: pre-filter topological heads before ancestors based filtering
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22356
diff changeset
452
42214
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
453 # new tip revision which we found after iterating items from new
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
454 # branches
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
455 ntiprev = self.tiprev
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
456
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
457 # Delay fetching the topological heads until they are needed.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
458 # A repository without non-continous branches can skip this part.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
459 topoheads = None
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
460
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
461 # If a changeset is visible, its parents must be visible too, so
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
462 # use the faster unfiltered parent accessor.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
463 parentrevs = repo.unfiltered().changelog.parentrevs
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
464
43106
d783f945a701 py3: finish porting iteritems() to pycompat and remove source transformer
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43104
diff changeset
465 for branch, newheadrevs in pycompat.iteritems(newbranches):
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
466 # For every branch, compute the new branchheads.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
467 # A branchhead is a revision such that no descendant is on
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
468 # the same branch.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
469 #
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
470 # The branchheads are computed iteratively in revision order.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
471 # This ensures topological order, i.e. parents are processed
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
472 # before their children. Ancestors are inclusive here, i.e.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
473 # any revision is an ancestor of itself.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
474 #
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
475 # Core observations:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
476 # - The current revision is always a branchhead for the
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
477 # repository up to that point.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
478 # - It is the first revision of the branch if and only if
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
479 # there was no branchhead before. In that case, it is the
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
480 # only branchhead as there are no possible ancestors on
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
481 # the same branch.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
482 # - If a parent is on the same branch, a branchhead can
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
483 # only be an ancestor of that parent, if it is parent
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
484 # itself. Otherwise it would have been removed as ancestor
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
485 # of that parent before.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
486 # - Therefore, if all parents are on the same branch, they
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
487 # can just be removed from the branchhead set.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
488 # - If one parent is on the same branch and the other is not
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
489 # and there was exactly one branchhead known, the existing
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
490 # branchhead can only be an ancestor if it is the parent.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
491 # Otherwise it would have been removed as ancestor of
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
492 # the parent before. The other parent therefore can't have
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
493 # a branchhead as ancestor.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
494 # - In all other cases, the parents on different branches
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
495 # could have a branchhead as ancestor. Those parents are
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
496 # kept in the "uncertain" set. If all branchheads are also
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
497 # topological heads, they can't have descendants and further
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
498 # checks can be skipped. Otherwise, the ancestors of the
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
499 # "uncertain" set are removed from branchheads.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
500 # This computation is heavy and avoided if at all possible.
42005
b137a6793c51 branchcache: make entries a private attribute
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42004
diff changeset
501 bheads = self._entries.setdefault(branch, [])
44452
9d2b2df2c2ba cleanup: run pyupgrade on our source tree to clean up varying things
Augie Fackler <augie@google.com>
parents: 44306
diff changeset
502 bheadset = {cl.rev(node) for node in bheads}
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
503 uncertain = set()
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
504 for newrev in sorted(newheadrevs):
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
505 if not bheadset:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
506 bheadset.add(newrev)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
507 continue
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
508
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
509 parents = [p for p in parentrevs(newrev) if p != nullrev]
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
510 samebranch = set()
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
511 otherbranch = set()
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
512 for p in parents:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
513 if p in bheadset or getbranchinfo(p)[0] == branch:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
514 samebranch.add(p)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
515 else:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
516 otherbranch.add(p)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
517 if otherbranch and not (len(bheadset) == len(samebranch) == 1):
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
518 uncertain.update(otherbranch)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
519 bheadset.difference_update(samebranch)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
520 bheadset.add(newrev)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
521
22357
9c3c3dc14a65 branchmap: pre-filter topological heads before ancestors based filtering
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22356
diff changeset
522 if uncertain:
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
523 if topoheads is None:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
524 topoheads = set(cl.headrevs())
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
525 if bheadset - topoheads:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
526 floorrev = min(bheadset)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
527 ancestors = set(cl.ancestors(newheadrevs, floorrev))
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
528 bheadset -= ancestors
20264
d9e1c167943b branchmap: use set for update code
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 20263
diff changeset
529 bheadrevs = sorted(bheadset)
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
530 self[branch] = [cl.node(rev) for rev in bheadrevs]
20263
ea4996754d91 branchmap: simplify update code
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 20262
diff changeset
531 tiprev = bheadrevs[-1]
42214
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
532 if tiprev > ntiprev:
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
533 ntiprev = tiprev
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
534
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
535 if ntiprev > self.tiprev:
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
536 self.tiprev = ntiprev
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
537 self.tipnode = cl.node(ntiprev)
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
538
19838
23386881abeb branchmap: remove the droppednodes logic
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 19837
diff changeset
539 if not self.validfor(repo):
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
540 # cache key are not valid anymore
47012
d55b71393907 node: replace nullid and friends with nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 46819
diff changeset
541 self.tipnode = repo.nullid
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
542 self.tiprev = nullrev
42002
662ffdde5adf branchcache: rename itervalues() to iterheads()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42001
diff changeset
543 for heads in self.iterheads():
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
544 tiprev = max(cl.rev(node) for node in heads)
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
545 if tiprev > self.tiprev:
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
546 self.tipnode = cl.node(tiprev)
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
547 self.tiprev = tiprev
24723
467a33142425 repoview: move function for computing filtered hash
Gregory Szorc <gregory.szorc@gmail.com>
parents: 24378
diff changeset
548 self.filteredhash = scmutil.filteredhash(repo, self.tiprev)
21031
05cfcecb3aef branchmap: log events related to branch cache
Gregory Szorc <gregory.szorc@gmail.com>
parents: 20264
diff changeset
549
30975
22fbca1d11ed mercurial: switch to util.timer for all interval timings
Simon Farnsworth <simonfar@fb.com>
parents: 29746
diff changeset
550 duration = util.timer() - starttime
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
551 repo.ui.log(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
552 b'branchcache',
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
553 b'updated %s in %.4f seconds\n',
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
554 _branchcachedesc(repo),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
555 duration,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
556 )
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
557
41566
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
558 self.write(repo)
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
559
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
560
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
561 class remotebranchcache(branchcache):
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
562 """Branchmap info for a remote connection, should not write locally"""
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
563
41566
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
564 def write(self, repo):
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
565 pass
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
566
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
567
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
568 # Revision branch info cache
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
569
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
570 _rbcversion = b'-v1'
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
571 _rbcnames = b'rbc-names' + _rbcversion
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
572 _rbcrevs = b'rbc-revs' + _rbcversion
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
573 # [4 byte hash prefix][4 byte branch name number with sign bit indicating open]
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
574 _rbcrecfmt = b'>4sI'
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
575 _rbcrecsize = calcsize(_rbcrecfmt)
46360
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
576 _rbcmininc = 64 * _rbcrecsize
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
577 _rbcnodelen = 4
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
578 _rbcbranchidxmask = 0x7FFFFFFF
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
579 _rbccloseflag = 0x80000000
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
580
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
581
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
582 class revbranchcache(object):
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
583 """Persistent cache, mapping from revision number to branch name and close.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
584 This is a low level cache, independent of filtering.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
585
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
586 Branch names are stored in rbc-names in internal encoding separated by 0.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
587 rbc-names is append-only, and each branch name is only stored once and will
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
588 thus have a unique index.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
589
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
590 The branch info for each revision is stored in rbc-revs as constant size
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
591 records. The whole file is read into memory, but it is only 'parsed' on
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
592 demand. The file is usually append-only but will be truncated if repo
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
593 modification is detected.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
594 The record for each revision contains the first 4 bytes of the
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
595 corresponding node hash, and the record is only used if it still matches.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
596 Even a completely trashed rbc-revs fill thus still give the right result
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
597 while converging towards full recovery ... assuming no incorrectly matching
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
598 node hashes.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
599 The record also contains 4 bytes where 31 bits contains the index of the
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
600 branch and the last bit indicate that it is a branch close commit.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
601 The usage pattern for rbc-revs is thus somewhat similar to 00changelog.i
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
602 and will grow with it but be 1/8th of its size.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
603 """
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
604
24159
5b4ed033390b revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Mads Kiilerich <madski@unity3d.com>
parents: 23877
diff changeset
605 def __init__(self, repo, readonly=True):
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
606 assert repo.filtername is None
24374
77fd1fb538cd revbranchcache: store repo on the object
Durham Goode <durham@fb.com>
parents: 24373
diff changeset
607 self._repo = repo
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
608 self._names = [] # branch names in local encoding with static index
31346
2a18e9e6ca43 py3: use bytearray() instead of array('c', ...) constructions
Augie Fackler <augie@google.com>
parents: 30975
diff changeset
609 self._rbcrevs = bytearray()
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
610 self._rbcsnameslen = 0 # length of names read at _rbcsnameslen
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
611 try:
33535
755e6532e81d cachevfs: migration the revbranchcache to 'cachevfs'
Boris Feld <boris.feld@octobus.net>
parents: 33534
diff changeset
612 bndata = repo.cachevfs.read(_rbcnames)
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
613 self._rbcsnameslen = len(bndata) # for verification before writing
31371
7dd2f51f38ac rbc: empty (and invalid) rbc-names file should give an empty name list
Mads Kiilerich <mads@kiilerich.com>
parents: 31370
diff changeset
614 if bndata:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
615 self._names = [
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
616 encoding.tolocal(bn) for bn in bndata.split(b'\0')
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
617 ]
29423
d2c6f3a948fa branchmap: remove unused exception variable
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28558
diff changeset
618 except (IOError, OSError):
24159
5b4ed033390b revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Mads Kiilerich <madski@unity3d.com>
parents: 23877
diff changeset
619 if readonly:
5b4ed033390b revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Mads Kiilerich <madski@unity3d.com>
parents: 23877
diff changeset
620 # don't try to use cache - fall back to the slow path
5b4ed033390b revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Mads Kiilerich <madski@unity3d.com>
parents: 23877
diff changeset
621 self.branchinfo = self._branchinfo
5b4ed033390b revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Mads Kiilerich <madski@unity3d.com>
parents: 23877
diff changeset
622
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
623 if self._names:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
624 try:
33535
755e6532e81d cachevfs: migration the revbranchcache to 'cachevfs'
Boris Feld <boris.feld@octobus.net>
parents: 33534
diff changeset
625 data = repo.cachevfs.read(_rbcrevs)
31346
2a18e9e6ca43 py3: use bytearray() instead of array('c', ...) constructions
Augie Fackler <augie@google.com>
parents: 30975
diff changeset
626 self._rbcrevs[:] = data
25660
328739ea70c3 global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents: 25266
diff changeset
627 except (IOError, OSError) as inst:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
628 repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
629 b"couldn't read revision branch cache: %s\n"
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
630 % stringutil.forcebytestr(inst)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
631 )
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
632 # remember number of good records on disk
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
633 self._rbcrevslen = min(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
634 len(self._rbcrevs) // _rbcrecsize, len(repo.changelog)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
635 )
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
636 if self._rbcrevslen == 0:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
637 self._names = []
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
638 self._rbcnamescount = len(self._names) # number of names read at
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
639 # _rbcsnameslen
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
640
28558
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
641 def _clear(self):
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
642 self._rbcsnameslen = 0
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
643 del self._names[:]
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
644 self._rbcnamescount = 0
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
645 self._rbcrevslen = len(self._repo.changelog)
31346
2a18e9e6ca43 py3: use bytearray() instead of array('c', ...) constructions
Augie Fackler <augie@google.com>
parents: 30975
diff changeset
646 self._rbcrevs = bytearray(self._rbcrevslen * _rbcrecsize)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
647 util.clearcachedproperty(self, b'_namesreverse')
40710
50a64c321c1e branchmap: build the revbranchcache._namesreverse() only when required
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 40425
diff changeset
648
50a64c321c1e branchmap: build the revbranchcache._namesreverse() only when required
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 40425
diff changeset
649 @util.propertycache
50a64c321c1e branchmap: build the revbranchcache._namesreverse() only when required
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 40425
diff changeset
650 def _namesreverse(self):
44452
9d2b2df2c2ba cleanup: run pyupgrade on our source tree to clean up varying things
Augie Fackler <augie@google.com>
parents: 44306
diff changeset
651 return {b: r for r, b in enumerate(self._names)}
28558
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
652
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
653 def branchinfo(self, rev):
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
654 """Return branch name and close flag for rev, using and updating
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
655 persistent cache."""
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
656 changelog = self._repo.changelog
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
657 rbcrevidx = rev * _rbcrecsize
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
658
25266
38117278f295 revbranchcache: return uncached branchinfo for nullrev (issue4683)
Yuya Nishihara <yuya@tcha.org>
parents: 24728
diff changeset
659 # avoid negative index, changelog.read(nullrev) is fast without cache
38117278f295 revbranchcache: return uncached branchinfo for nullrev (issue4683)
Yuya Nishihara <yuya@tcha.org>
parents: 24728
diff changeset
660 if rev == nullrev:
38117278f295 revbranchcache: return uncached branchinfo for nullrev (issue4683)
Yuya Nishihara <yuya@tcha.org>
parents: 24728
diff changeset
661 return changelog.branchinfo(rev)
38117278f295 revbranchcache: return uncached branchinfo for nullrev (issue4683)
Yuya Nishihara <yuya@tcha.org>
parents: 24728
diff changeset
662
29604
db0095c83344 rbc: fix invalid rbc-revs entries caused by missing cache growth
Mads Kiilerich <madski@unity3d.com>
parents: 29423
diff changeset
663 # if requested rev isn't allocated, grow and cache the rev info
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
664 if len(self._rbcrevs) < rbcrevidx + _rbcrecsize:
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
665 return self._branchinfo(rev)
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
666
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
667 # fast path: extract data from cache, use it if node is matching
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
668 reponode = changelog.node(rev)[:_rbcnodelen]
33663
1814ca418b30 branchmap: revert c34532365b38 for Python 2.7 compatibility
Mike Hommey <mh@glandium.org>
parents: 33535
diff changeset
669 cachenode, branchidx = unpack_from(
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
670 _rbcrecfmt, util.buffer(self._rbcrevs), rbcrevidx
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
671 )
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
672 close = bool(branchidx & _rbccloseflag)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
673 if close:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
674 branchidx &= _rbcbranchidxmask
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
675 if cachenode == b'\0\0\0\0':
24376
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
676 pass
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
677 elif cachenode == reponode:
29615
a2a380e2750f rbc: fix superfluous rebuilding from scratch - don't abuse self._rbcnamescount
Mads Kiilerich <madski@unity3d.com>
parents: 29604
diff changeset
678 try:
28558
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
679 return self._names[branchidx], close
29615
a2a380e2750f rbc: fix superfluous rebuilding from scratch - don't abuse self._rbcnamescount
Mads Kiilerich <madski@unity3d.com>
parents: 29604
diff changeset
680 except IndexError:
a2a380e2750f rbc: fix superfluous rebuilding from scratch - don't abuse self._rbcnamescount
Mads Kiilerich <madski@unity3d.com>
parents: 29604
diff changeset
681 # recover from invalid reference to unknown branch
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
682 self._repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
683 b"referenced branch names not found"
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
684 b" - rebuilding revision branch cache from scratch\n"
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
685 )
29615
a2a380e2750f rbc: fix superfluous rebuilding from scratch - don't abuse self._rbcnamescount
Mads Kiilerich <madski@unity3d.com>
parents: 29604
diff changeset
686 self._clear()
24376
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
687 else:
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
688 # rev/node map has changed, invalidate the cache from here up
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
689 self._repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
690 b"history modification detected - truncating "
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
691 b"revision branch cache to revision %d\n" % rev
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
692 )
24376
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
693 truncate = rbcrevidx + _rbcrecsize
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
694 del self._rbcrevs[truncate:]
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
695 self._rbcrevslen = min(self._rbcrevslen, truncate)
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
696
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
697 # fall back to slow path and make sure it will be written to disk
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
698 return self._branchinfo(rev)
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
699
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
700 def _branchinfo(self, rev):
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
701 """Retrieve branch info from changelog and update _rbcrevs"""
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
702 changelog = self._repo.changelog
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
703 b, close = changelog.branchinfo(rev)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
704 if b in self._namesreverse:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
705 branchidx = self._namesreverse[b]
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
706 else:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
707 branchidx = len(self._names)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
708 self._names.append(b)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
709 self._namesreverse[b] = branchidx
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
710 reponode = changelog.node(rev)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
711 if close:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
712 branchidx |= _rbccloseflag
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
713 self._setcachedata(rev, reponode, branchidx)
24375
fe255b2525d5 revbranchcache: move entry writing to a separate function
Durham Goode <durham@fb.com>
parents: 24374
diff changeset
714 return b, close
fe255b2525d5 revbranchcache: move entry writing to a separate function
Durham Goode <durham@fb.com>
parents: 24374
diff changeset
715
46372
3e91d9978bec branchmap: update rev-branch-cache incrementally
Joerg Sonnenberger <joerg@bec.de>
parents: 46360
diff changeset
716 def setdata(self, rev, changelogrevision):
36962
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
717 """add new data information to the cache"""
46372
3e91d9978bec branchmap: update rev-branch-cache incrementally
Joerg Sonnenberger <joerg@bec.de>
parents: 46360
diff changeset
718 branch, close = changelogrevision.branchinfo
3e91d9978bec branchmap: update rev-branch-cache incrementally
Joerg Sonnenberger <joerg@bec.de>
parents: 46360
diff changeset
719
36962
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
720 if branch in self._namesreverse:
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
721 branchidx = self._namesreverse[branch]
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
722 else:
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
723 branchidx = len(self._names)
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
724 self._names.append(branch)
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
725 self._namesreverse[branch] = branchidx
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
726 if close:
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
727 branchidx |= _rbccloseflag
46372
3e91d9978bec branchmap: update rev-branch-cache incrementally
Joerg Sonnenberger <joerg@bec.de>
parents: 46360
diff changeset
728 self._setcachedata(rev, self._repo.changelog.node(rev), branchidx)
36962
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
729 # If no cache data were readable (non exists, bad permission, etc)
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
730 # the cache was bypassing itself by setting:
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
731 #
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
732 # self.branchinfo = self._branchinfo
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
733 #
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
734 # Since we now have data in the cache, we need to drop this bypassing.
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43499
diff changeset
735 if 'branchinfo' in vars(self):
36962
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
736 del self.branchinfo
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
737
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
738 def _setcachedata(self, rev, node, branchidx):
24375
fe255b2525d5 revbranchcache: move entry writing to a separate function
Durham Goode <durham@fb.com>
parents: 24374
diff changeset
739 """Writes the node's branch data to the in-memory cache data."""
31454
a5bad127128d branchmap: handle nullrev in setcachedata
Durham Goode <durham@fb.com>
parents: 31381
diff changeset
740 if rev == nullrev:
a5bad127128d branchmap: handle nullrev in setcachedata
Durham Goode <durham@fb.com>
parents: 31381
diff changeset
741 return
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
742 rbcrevidx = rev * _rbcrecsize
46360
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
743 requiredsize = rbcrevidx + _rbcrecsize
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
744 rbccur = len(self._rbcrevs)
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
745 if rbccur < requiredsize:
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
746 # bytearray doesn't allocate extra space at least in Python 3.7.
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
747 # When multiple changesets are added in a row, precise resize would
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
748 # result in quadratic complexity. Overallocate to compensate by
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
749 # use the classic doubling technique for dynamic arrays instead.
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
750 # If there was a gap in the map before, less space will be reserved.
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
751 self._rbcrevs.extend(b'\0' * max(_rbcmininc, requiredsize))
31370
906be86990c4 rbc: use struct unpack_from and pack_into instead of unpack and pack
Mads Kiilerich <madski@unity3d.com>
parents: 31360
diff changeset
752 pack_into(_rbcrecfmt, self._rbcrevs, rbcrevidx, node, branchidx)
24376
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
753 self._rbcrevslen = min(self._rbcrevslen, rev)
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
754
24377
656f93ce66d5 revbranchcache: move cache writing to the transaction finalizer
Durham Goode <durham@fb.com>
parents: 24376
diff changeset
755 tr = self._repo.currenttransaction()
656f93ce66d5 revbranchcache: move cache writing to the transaction finalizer
Durham Goode <durham@fb.com>
parents: 24376
diff changeset
756 if tr:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
757 tr.addfinalize(b'write-revbranchcache', self.write)
24377
656f93ce66d5 revbranchcache: move cache writing to the transaction finalizer
Durham Goode <durham@fb.com>
parents: 24376
diff changeset
758
656f93ce66d5 revbranchcache: move cache writing to the transaction finalizer
Durham Goode <durham@fb.com>
parents: 24376
diff changeset
759 def write(self, tr=None):
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
760 """Save branch cache if it is dirty."""
24374
77fd1fb538cd revbranchcache: store repo on the object
Durham Goode <durham@fb.com>
parents: 24373
diff changeset
761 repo = self._repo
29744
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
762 wlock = None
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
763 step = b''
29744
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
764 try:
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
765 # write the new names
29743
9f3c49ee4486 branchmap: preparatory indent of indent the branch rev writing code
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29615
diff changeset
766 if self._rbcnamescount < len(self._names):
29744
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
767 wlock = repo.wlock(wait=False)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
768 step = b' names'
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
769 self._writenames(repo)
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
770
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
771 # write the new revs
29743
9f3c49ee4486 branchmap: preparatory indent of indent the branch rev writing code
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29615
diff changeset
772 start = self._rbcrevslen * _rbcrecsize
9f3c49ee4486 branchmap: preparatory indent of indent the branch rev writing code
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29615
diff changeset
773 if start != len(self._rbcrevs):
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
774 step = b''
29744
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
775 if wlock is None:
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
776 wlock = repo.wlock(wait=False)
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
777 self._writerevs(repo, start)
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
778
29745
3b184adfb5be branchmap: simplify error handlind when writing rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29744
diff changeset
779 except (IOError, OSError, error.Abort, error.LockError) as inst:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
780 repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
781 b"couldn't write revision branch cache%s: %s\n"
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
782 % (step, stringutil.forcebytestr(inst))
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
783 )
29744
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
784 finally:
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
785 if wlock is not None:
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
786 wlock.release()
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
787
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
788 def _writenames(self, repo):
47062
f38bf44e077f black: make codebase compatible with black v21.4b2 and v20.8b1
Kyle Lippincott <spectral@google.com>
parents: 46819
diff changeset
789 """write the new branch names to revbranchcache"""
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
790 if self._rbcnamescount != 0:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
791 f = repo.cachevfs.open(_rbcnames, b'ab')
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
792 if f.tell() == self._rbcsnameslen:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
793 f.write(b'\0')
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
794 else:
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
795 f.close()
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
796 repo.ui.debug(b"%s changed - rewriting it\n" % _rbcnames)
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
797 self._rbcnamescount = 0
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
798 self._rbcrevslen = 0
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
799 if self._rbcnamescount == 0:
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
800 # before rewriting names, make sure references are removed
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
801 repo.cachevfs.unlinkpath(_rbcrevs, ignoremissing=True)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
802 f = repo.cachevfs.open(_rbcnames, b'wb')
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
803 f.write(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
804 b'\0'.join(
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
805 encoding.fromlocal(b)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
806 for b in self._names[self._rbcnamescount :]
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
807 )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
808 )
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
809 self._rbcsnameslen = f.tell()
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
810 f.close()
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
811 self._rbcnamescount = len(self._names)
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
812
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
813 def _writerevs(self, repo, start):
47062
f38bf44e077f black: make codebase compatible with black v21.4b2 and v20.8b1
Kyle Lippincott <spectral@google.com>
parents: 46819
diff changeset
814 """write the new revs to revbranchcache"""
42185
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
815 revs = min(len(repo.changelog), len(self._rbcrevs) // _rbcrecsize)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
816 with repo.cachevfs.open(_rbcrevs, b'ab') as f:
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
817 if f.tell() != start:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
818 repo.ui.debug(
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
819 b"truncating cache/%s to %d\n" % (_rbcrevs, start)
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
820 )
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
821 f.seek(start)
42185
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
822 if f.tell() != start:
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
823 start = 0
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
824 f.seek(start)
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
825 f.truncate()
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
826 end = revs * _rbcrecsize
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
827 f.write(self._rbcrevs[start:end])
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
828 self._rbcrevslen = revs