annotate mercurial/branchmap.py @ 51447:40943970b7ae stable

config: move the option to mmap rev branch cache in the storage section See previous commit for rational.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Mon, 04 Mar 2024 04:16:15 +0100
parents 02e7d79edf62
children 0239ebdd0740
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
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9 import struct
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10
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11 from .node import (
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12 bin,
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13 hex,
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14 nullrev,
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15 )
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16
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17 from typing import (
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18 Callable,
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19 Dict,
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20 Iterable,
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21 List,
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22 Optional,
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23 Set,
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24 TYPE_CHECKING,
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25 Tuple,
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26 Union,
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27 )
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28
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29 from . import (
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30 encoding,
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31 error,
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32 obsolete,
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33 scmutil,
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34 util,
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35 )
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36
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37 from .utils import (
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38 repoviewutil,
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39 stringutil,
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40 )
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41
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42 if TYPE_CHECKING:
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43 from . import localrepo
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44
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45 assert [localrepo]
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46
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47 subsettable = repoviewutil.subsettable
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48
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49 calcsize = struct.calcsize
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50 pack_into = struct.pack_into
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51 unpack_from = struct.unpack_from
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52
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53
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54 class BranchMapCache:
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55 """mapping of filtered views of repo with their branchcache"""
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56
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57 def __init__(self):
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58 self._per_filter = {}
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59
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60 def __getitem__(self, repo):
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61 self.updatecache(repo)
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62 return self._per_filter[repo.filtername]
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63
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64 def updatecache(self, repo):
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65 """Update the cache for the given filtered view on a repository"""
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66 # This can trigger updates for the caches for subsets of the filtered
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67 # view, e.g. when there is no cache for this filtered view or the cache
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68 # is stale.
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69
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70 cl = repo.changelog
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71 filtername = repo.filtername
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72 bcache = self._per_filter.get(filtername)
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73 if bcache is None or not bcache.validfor(repo):
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74 # cache object missing or cache object stale? Read from disk
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75 bcache = branchcache.fromfile(repo)
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76
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77 revs = []
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78 if bcache is None:
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79 # no (fresh) cache available anymore, perhaps we can re-use
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80 # the cache for a subset, then extend that to add info on missing
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81 # revisions.
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82 subsetname = subsettable.get(filtername)
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83 if subsetname is not None:
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84 subset = repo.filtered(subsetname)
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85 bcache = self[subset].copy()
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86 extrarevs = subset.changelog.filteredrevs - cl.filteredrevs
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87 revs.extend(r for r in extrarevs if r <= bcache.tiprev)
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88 else:
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89 # nothing to fall back on, start empty.
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90 bcache = branchcache(repo)
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91
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92 revs.extend(cl.revs(start=bcache.tiprev + 1))
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93 if revs:
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94 bcache.update(repo, revs)
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95
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96 assert bcache.validfor(repo), filtername
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97 self._per_filter[repo.filtername] = bcache
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98
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99 def replace(self, repo, remotebranchmap):
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100 """Replace the branchmap cache for a repo with a branch mapping.
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101
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102 This is likely only called during clone with a branch map from a
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103 remote.
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104
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105 """
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106 cl = repo.changelog
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107 clrev = cl.rev
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108 clbranchinfo = cl.branchinfo
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109 rbheads = []
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110 closed = set()
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111 for bheads in remotebranchmap.values():
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112 rbheads += bheads
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113 for h in bheads:
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114 r = clrev(h)
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115 b, c = clbranchinfo(r)
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116 if c:
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117 closed.add(h)
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118
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119 if rbheads:
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120 rtiprev = max((int(clrev(node)) for node in rbheads))
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121 cache = branchcache(
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122 repo,
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123 remotebranchmap,
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124 repo[rtiprev].node(),
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125 rtiprev,
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126 closednodes=closed,
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127 )
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128
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129 # Try to stick it as low as possible
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130 # filter above served are unlikely to be fetch from a clone
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131 for candidate in (b'base', b'immutable', b'served'):
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132 rview = repo.filtered(candidate)
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133 if cache.validfor(rview):
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134 self._per_filter[candidate] = cache
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135 cache.write(rview)
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136 return
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137
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diff changeset
138 def clear(self):
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139 self._per_filter.clear()
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140
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141 def write_delayed(self, repo):
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142 unfi = repo.unfiltered()
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diff changeset
143 for filtername, cache in self._per_filter.items():
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144 if cache._delayed:
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145 repo = unfi.filtered(filtername)
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diff changeset
146 cache.write(repo)
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147
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148
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149 def _unknownnode(node):
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150 """raises ValueError when branchcache found a node which does not exists"""
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151 raise ValueError('node %s does not exist' % node.hex())
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152
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153
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154 def _branchcachedesc(repo):
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155 if repo.filtername is not None:
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156 return b'branch cache (%s)' % repo.filtername
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157 else:
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158 return b'branch cache'
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159
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160
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161 class branchcache:
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162 """A dict like object that hold branches heads cache.
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163
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164 This cache is used to avoid costly computations to determine all the
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165 branch heads of a repo.
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166
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167 The cache is serialized on disk in the following format:
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168
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169 <tip hex node> <tip rev number> [optional filtered repo hex hash]
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170 <branch head hex node> <open/closed state> <branch name>
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171 <branch head hex node> <open/closed state> <branch name>
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172 ...
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diff changeset
173
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diff changeset
174 The first line is used to check if the cache is still valid. If the
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175 branch cache is for a filtered repo view, an optional third hash is
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parents: 48677
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176 included that hashes the hashes of all filtered and obsolete revisions.
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diff changeset
177
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parents: 20181
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178 The open/closed state is represented by a single letter 'o' or 'c'.
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179 This field can be used to avoid changelog reads when determining if a
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Brodie Rao <brodie@sf.io>
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diff changeset
180 branch head closes a branch or not.
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parents: 20032
diff changeset
181 """
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182
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diff changeset
183 def __init__(
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parents: 42603
diff changeset
184 self,
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parents: 51285
diff changeset
185 repo: "localrepo.localrepository",
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parents: 51285
diff changeset
186 entries: Union[
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diff changeset
187 Dict[bytes, List[bytes]], Iterable[Tuple[bytes, List[bytes]]]
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diff changeset
188 ] = (),
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parents: 51285
diff changeset
189 tipnode: Optional[bytes] = None,
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parents: 51285
diff changeset
190 tiprev: Optional[int] = nullrev,
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parents: 51285
diff changeset
191 filteredhash: Optional[bytes] = None,
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parents: 51285
diff changeset
192 closednodes: Optional[Set[bytes]] = None,
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parents: 51285
diff changeset
193 hasnode: Optional[Callable[[bytes], bool]] = None,
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parents: 51285
diff changeset
194 ) -> None:
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195 """hasnode is a function which can be used to verify whether changelog
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parents: 42006
diff changeset
196 has a given node or not. If it's not provided, we assume that every node
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diff changeset
197 we have exists in changelog"""
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Joerg Sonnenberger <joerg@bec.de>
parents: 46372
diff changeset
198 self._repo = repo
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199 self._delayed = False
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Joerg Sonnenberger <joerg@bec.de>
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diff changeset
200 if tipnode is None:
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Joerg Sonnenberger <joerg@bec.de>
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diff changeset
201 self.tipnode = repo.nullid
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Joerg Sonnenberger <joerg@bec.de>
parents: 46819
diff changeset
202 else:
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diff changeset
203 self.tipnode = tipnode
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204 self.tiprev = tiprev
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205 self.filteredhash = filteredhash
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diff changeset
206 # closednodes is a set of nodes that close their branch. If the branch
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207 # cache has been updated, it may contain nodes that are no longer
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diff changeset
208 # heads.
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209 if closednodes is None:
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diff changeset
210 self._closednodes = set()
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diff changeset
211 else:
43636
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diff changeset
212 self._closednodes = closednodes
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213 self._entries = dict(entries)
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diff changeset
214 # whether closed nodes are verified or not
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diff changeset
215 self._closedverified = False
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216 # branches for which nodes are verified
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diff changeset
217 self._verifiedbranches = set()
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diff changeset
218 self._hasnode = hasnode
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diff changeset
219 if self._hasnode is None:
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diff changeset
220 self._hasnode = lambda x: True
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diff changeset
221
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diff changeset
222 def _verifyclosed(self):
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diff changeset
223 """verify the closed nodes we have"""
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diff changeset
224 if self._closedverified:
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diff changeset
225 return
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diff changeset
226 for node in self._closednodes:
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diff changeset
227 if not self._hasnode(node):
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228 _unknownnode(node)
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229
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230 self._closedverified = True
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diff changeset
231
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232 def _verifybranch(self, branch):
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233 """verify head nodes for the given branch."""
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diff changeset
234 if branch not in self._entries or branch in self._verifiedbranches:
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diff changeset
235 return
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diff changeset
236 for n in self._entries[branch]:
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diff changeset
237 if not self._hasnode(n):
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diff changeset
238 _unknownnode(n)
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diff changeset
239
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diff changeset
240 self._verifiedbranches.add(branch)
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diff changeset
241
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diff changeset
242 def _verifyall(self):
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diff changeset
243 """verifies nodes of all the branches"""
42133
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parents: 42132
diff changeset
244 needverification = set(self._entries.keys()) - self._verifiedbranches
75e8e16ca107 branchcache: only iterate over branches which needs to be verified
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parents: 42132
diff changeset
245 for b in needverification:
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diff changeset
246 self._verifybranch(b)
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diff changeset
247
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diff changeset
248 def __iter__(self):
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diff changeset
249 return iter(self._entries)
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diff changeset
250
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diff changeset
251 def __setitem__(self, key, value):
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diff changeset
252 self._entries[key] = value
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diff changeset
253
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diff changeset
254 def __getitem__(self, key):
42121
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diff changeset
255 self._verifybranch(key)
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diff changeset
256 return self._entries[key]
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diff changeset
257
42113
f0def07fa82f branchmap: implement __contains__()
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diff changeset
258 def __contains__(self, key):
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diff changeset
259 self._verifybranch(key)
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diff changeset
260 return key in self._entries
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diff changeset
261
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diff changeset
262 def iteritems(self):
48913
f254fc73d956 global: bulk replace simple pycompat.iteritems(x) with x.items()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48875
diff changeset
263 for k, v in self._entries.items():
42134
f0203c3406e7 branchcache: lazily validate nodes in iteritems()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42133
diff changeset
264 self._verifybranch(k)
f0203c3406e7 branchcache: lazily validate nodes in iteritems()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42133
diff changeset
265 yield k, v
42001
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diff changeset
266
42603
3018749a71bb py3: source-transform only call-sites of iteritems(), not definitions
Martin von Zweigbergk <martinvonz@google.com>
parents: 42602
diff changeset
267 items = iteritems
3018749a71bb py3: source-transform only call-sites of iteritems(), not definitions
Martin von Zweigbergk <martinvonz@google.com>
parents: 42602
diff changeset
268
42004
0bd730fbcc2b branchcache: introduce hasbranch()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42003
diff changeset
269 def hasbranch(self, label):
47062
f38bf44e077f black: make codebase compatible with black v21.4b2 and v20.8b1
Kyle Lippincott <spectral@google.com>
parents: 46819
diff changeset
270 """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
271 self._verifybranch(label)
42005
b137a6793c51 branchcache: make entries a private attribute
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42004
diff changeset
272 return label in self._entries
42004
0bd730fbcc2b branchcache: introduce hasbranch()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42003
diff changeset
273
41565
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Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
274 @classmethod
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
275 def fromfile(cls, repo):
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
276 f = None
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
277 try:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
278 f = repo.cachevfs(cls._filename(repo))
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
279 lineiter = iter(f)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
280 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
281 last, lrev = cachekey[:2]
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
282 last, lrev = bin(last), int(lrev)
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
283 filteredhash = None
42007
b5511845f9d5 branchcache: have a hasnode function to validate nodes
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42006
diff changeset
284 hasnode = repo.changelog.hasnode
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
285 if len(cachekey) > 2:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
286 filteredhash = bin(cachekey[2])
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
287 bcache = cls(
46780
6266d19556ad node: introduce nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 46372
diff changeset
288 repo,
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
289 tipnode=last,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
290 tiprev=lrev,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
291 filteredhash=filteredhash,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
292 hasnode=hasnode,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
293 )
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
294 if not bcache.validfor(repo):
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
295 # invalidate the cache
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43499
diff changeset
296 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
297 bcache.load(repo, lineiter)
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
298 except (IOError, OSError):
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
299 return None
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
300
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
301 except Exception as inst:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
302 if repo.ui.debugflag:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
303 msg = b'invalid %s: %s\n'
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
304 repo.ui.debug(
43499
1a47fe4bc154 branchmap: pytype is confused about bytestr
Augie Fackler <augie@google.com>
parents: 43106
diff changeset
305 msg
1a47fe4bc154 branchmap: pytype is confused about bytestr
Augie Fackler <augie@google.com>
parents: 43106
diff changeset
306 % (
1a47fe4bc154 branchmap: pytype is confused about bytestr
Augie Fackler <augie@google.com>
parents: 43106
diff changeset
307 _branchcachedesc(repo),
46685
799973a44c82 branchmap: force Exception to bytes before logging
Matt Harbison <matt_harbison@yahoo.com>
parents: 46254
diff changeset
308 stringutil.forcebytestr(inst),
43499
1a47fe4bc154 branchmap: pytype is confused about bytestr
Augie Fackler <augie@google.com>
parents: 43106
diff changeset
309 )
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
310 )
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
311 bcache = None
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
312
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
313 finally:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
314 if f:
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
315 f.close()
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
316
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
317 return bcache
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
318
41808
8ad46ac6728e branchmap: prevent reading the file twice through different iterators
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 41797
diff changeset
319 def load(self, repo, lineiter):
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44452
diff changeset
320 """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
321 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
322 for line in lineiter:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
323 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
324 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
325 continue
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
326 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
327 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
328 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
329 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
330 node = bin(node)
42005
b137a6793c51 branchcache: make entries a private attribute
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42004
diff changeset
331 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
332 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
333 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
334
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
335 @staticmethod
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
336 def _filename(repo):
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
337 """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
338 filename = b"branch2"
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
339 if repo.filtername:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
340 filename = b'%s-%s' % (filename, repo.filtername)
41565
bf7fb97aecf1 branchmap: make branchcache responsible for reading
Martijn Pieters <mj@octobus.net>
parents: 41396
diff changeset
341 return filename
18124
79db6d40bced branchmap: store branchcache in a dedicated object
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18121
diff changeset
342
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
343 def validfor(self, repo):
48719
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
344 """check that cache contents are valid for (a subset of) this repo
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
345
48719
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
346 - False when the order of changesets changed or if we detect a strip.
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
347 - True when cache is up-to-date for the current repo or its subset."""
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
348 try:
48719
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
349 node = repo.changelog.node(self.tiprev)
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
350 except IndexError:
48719
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
351 # changesets were stripped and now we don't even have enough to
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
352 # find tiprev
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
353 return False
48719
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
354 if self.tipnode != node:
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
355 # tiprev doesn't correspond to tipnode: repo was stripped, or this
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
356 # repo has a different order of changesets
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
357 return False
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
358 tiphash = scmutil.filteredhash(repo, self.tiprev, needobsolete=True)
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
359 # hashes don't match if this repo view has a different set of filtered
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
360 # revisions (e.g. due to phase changes) or obsolete revisions (e.g.
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
361 # history was rewritten)
02e9ad08999b branchmap: split a long condition in branchcache.validfor(), add comments
Anton Shestakov <av6@dwimlabs.net>
parents: 48718
diff changeset
362 return self.filteredhash == tiphash
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
363
20186
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
364 def _branchtip(self, heads):
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44452
diff changeset
365 """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
366 otherwise return last closed head and true."""
20186
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
367 tip = heads[-1]
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
368 closed = True
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
369 for h in reversed(heads):
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
370 if h not in self._closednodes:
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
371 tip = h
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
372 closed = False
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
373 break
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
374 return tip, closed
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
375
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
376 def branchtip(self, branch):
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44452
diff changeset
377 """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
378 tipmost closed head on branch.
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44452
diff changeset
379 Raise KeyError for unknown branch."""
20186
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
380 return self._branchtip(self[branch])[0]
f5b461a4bc55 branchmap: introduce branchtip() method
Brodie Rao <brodie@sf.io>
parents: 20185
diff changeset
381
34074
abf91c4f9608 branches: correctly show inactive multiheaded branches
the31k <the31k@thethirty.one>
parents: 33663
diff changeset
382 def iteropen(self, nodes):
abf91c4f9608 branches: correctly show inactive multiheaded branches
the31k <the31k@thethirty.one>
parents: 33663
diff changeset
383 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
384
20188
3a3727829607 branchmap: introduce branchheads() method
Brodie Rao <brodie@sf.io>
parents: 20186
diff changeset
385 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
386 self._verifybranch(branch)
42112
29c22496dd97 branchmap: prevent using __getitem__() in branchheads()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42111
diff changeset
387 heads = self._entries[branch]
20188
3a3727829607 branchmap: introduce branchheads() method
Brodie Rao <brodie@sf.io>
parents: 20186
diff changeset
388 if not closed:
34074
abf91c4f9608 branches: correctly show inactive multiheaded branches
the31k <the31k@thethirty.one>
parents: 33663
diff changeset
389 heads = list(self.iteropen(heads))
20188
3a3727829607 branchmap: introduce branchheads() method
Brodie Rao <brodie@sf.io>
parents: 20186
diff changeset
390 return heads
3a3727829607 branchmap: introduce branchheads() method
Brodie Rao <brodie@sf.io>
parents: 20186
diff changeset
391
20190
d5d25e541637 branchmap: introduce iterbranches() method
Brodie Rao <brodie@sf.io>
parents: 20188
diff changeset
392 def iterbranches(self):
48913
f254fc73d956 global: bulk replace simple pycompat.iteritems(x) with x.items()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48875
diff changeset
393 for bn, heads in self.items():
20190
d5d25e541637 branchmap: introduce iterbranches() method
Brodie Rao <brodie@sf.io>
parents: 20188
diff changeset
394 yield (bn, heads) + self._branchtip(heads)
d5d25e541637 branchmap: introduce iterbranches() method
Brodie Rao <brodie@sf.io>
parents: 20188
diff changeset
395
42002
662ffdde5adf branchcache: rename itervalues() to iterheads()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42001
diff changeset
396 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
397 """returns all the heads"""
42121
6578654916ae branchcache: lazily validate nodes from the branchmap
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42120
diff changeset
398 self._verifyall()
48935
2cce2fa5bcf7 py3: replace pycompat.itervalues(x) with x.values()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48913
diff changeset
399 return self._entries.values()
42002
662ffdde5adf branchcache: rename itervalues() to iterheads()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42001
diff changeset
400
18232
dd0b636b0b65 branchmap: add a copy method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18218
diff changeset
401 def copy(self):
dd0b636b0b65 branchmap: add a copy method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18218
diff changeset
402 """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
403 return type(self)(
46780
6266d19556ad node: introduce nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 46372
diff changeset
404 self._repo,
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
405 self._entries,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
406 self.tipnode,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
407 self.tiprev,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
408 self.filteredhash,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
409 self._closednodes,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
410 )
18132
db25bf1dc828 branchmap: move validity logic in the object itself
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18131
diff changeset
411
18128
f0d56efaa35a branchmap: make write a method on the branchmap object
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18127
diff changeset
412 def write(self, repo):
48677
8e5effbf52d0 branchmap: stop writing cache for uncommitted data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47128
diff changeset
413 tr = repo.currenttransaction()
8e5effbf52d0 branchmap: stop writing cache for uncommitted data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47128
diff changeset
414 if not getattr(tr, 'finalized', True):
8e5effbf52d0 branchmap: stop writing cache for uncommitted data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47128
diff changeset
415 # Avoid premature writing.
8e5effbf52d0 branchmap: stop writing cache for uncommitted data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47128
diff changeset
416 #
8e5effbf52d0 branchmap: stop writing cache for uncommitted data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47128
diff changeset
417 # (The cache warming setup by localrepo will update the file later.)
8e5effbf52d0 branchmap: stop writing cache for uncommitted data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47128
diff changeset
418 self._delayed = True
8e5effbf52d0 branchmap: stop writing cache for uncommitted data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47128
diff changeset
419 return
18128
f0d56efaa35a branchmap: make write a method on the branchmap object
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18127
diff changeset
420 try:
49203
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
421 filename = self._filename(repo)
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
422 with repo.cachevfs(filename, b"w", atomictemp=True) as f:
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
423 cachekey = [hex(self.tipnode), b'%d' % self.tiprev]
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
424 if self.filteredhash is not None:
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
425 cachekey.append(hex(self.filteredhash))
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
426 f.write(b" ".join(cachekey) + b'\n')
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
427 nodecount = 0
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
428 for label, nodes in sorted(self._entries.items()):
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
429 label = encoding.fromlocal(label)
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
430 for node in nodes:
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
431 nodecount += 1
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
432 if node in self._closednodes:
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
433 state = b'c'
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
434 else:
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
435 state = b'o'
f923bdd7477d branchmap: use a context manager when writing the branchmap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48946
diff changeset
436 f.write(b"%s %s %s\n" % (hex(node), state, label))
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
437 repo.ui.log(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
438 b'branchcache',
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
439 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
440 _branchcachedesc(repo),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
441 len(self._entries),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
442 nodecount,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
443 )
48677
8e5effbf52d0 branchmap: stop writing cache for uncommitted data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47128
diff changeset
444 self._delayed = False
26587
56b2bcea2529 error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26460
diff changeset
445 except (IOError, OSError, error.Abort) as inst:
34370
d0db41af73c0 branchmap: remove superfluous pass statements
Augie Fackler <augie@google.com>
parents: 34074
diff changeset
446 # 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
447 repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
448 b"couldn't write branch cache: %s\n"
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
449 % stringutil.forcebytestr(inst)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
450 )
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
451
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
452 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
453 """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
454 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
455 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
456 """
30975
22fbca1d11ed mercurial: switch to util.timer for all interval timings
Simon Farnsworth <simonfar@fb.com>
parents: 29746
diff changeset
457 starttime = util.timer()
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
458 cl = repo.changelog
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
459 # collect new branch entries
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
460 newbranches = {}
24373
59cc09240afb revbranchcache: move out of branchmap onto localrepo
Durham Goode <durham@fb.com>
parents: 24163
diff changeset
461 getbranchinfo = repo.revbranchcache().branchinfo
18307
0eed2546118a branchmap: Save changectx creation during update
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18305
diff changeset
462 for r in revgen:
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
463 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
464 newbranches.setdefault(branch, []).append(r)
20185
7d4219512823 branchmap: cache open/closed branch head information
Brodie Rao <brodie@sf.io>
parents: 20181
diff changeset
465 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
466 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
467
42214
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
468 # 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
469 # branches
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
470 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
471
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
472 # 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
473 # 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
474 topoheads = None
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
475
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
476 # 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
477 # 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
478 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
479
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
480 # Faster than using ctx.obsolete()
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
481 obsrevs = obsolete.getrevs(repo, b'obsolete')
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
482
48913
f254fc73d956 global: bulk replace simple pycompat.iteritems(x) with x.items()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48875
diff changeset
483 for branch, newheadrevs in newbranches.items():
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
484 # 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
485 # 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
486 # the same branch.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
487 #
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
488 # 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
489 # 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
490 # 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
491 # 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
492 #
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
493 # Core observations:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
494 # - 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
495 # 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
496 # - 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
497 # 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
498 # 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
499 # the same branch.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
500 # - 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
501 # 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
502 # 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
503 # of that parent before.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
504 # - 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
505 # 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
506 # - 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
507 # 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
508 # 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
509 # 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
510 # 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
511 # a branchhead as ancestor.
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
512 # - 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
513 # 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
514 # 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
515 # 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
516 # 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
517 # "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
518 # This computation is heavy and avoided if at all possible.
48718
8b393f40a5e6 branchmap: don't add branch entries if there are no heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48687
diff changeset
519 bheads = self._entries.get(branch, [])
44452
9d2b2df2c2ba cleanup: run pyupgrade on our source tree to clean up varying things
Augie Fackler <augie@google.com>
parents: 44306
diff changeset
520 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
521 uncertain = set()
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
522 for newrev in sorted(newheadrevs):
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
523 if newrev in obsrevs:
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
524 # We ignore obsolete changesets as they shouldn't be
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
525 # considered heads.
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
526 continue
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
527
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
528 if not bheadset:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
529 bheadset.add(newrev)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
530 continue
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
531
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
532 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
533 samebranch = set()
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
534 otherbranch = set()
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
535 obsparents = set()
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
536 for p in parents:
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
537 if p in obsrevs:
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
538 # We ignored this obsolete changeset earlier, but now
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
539 # that it has non-ignored children, we need to make
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
540 # sure their ancestors are not considered heads. To
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
541 # achieve that, we will simply treat this obsolete
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
542 # changeset as a parent from other branch.
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
543 obsparents.add(p)
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
544 elif p in bheadset or getbranchinfo(p)[0] == branch:
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
545 samebranch.add(p)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
546 else:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
547 otherbranch.add(p)
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
548 if not (len(bheadset) == len(samebranch) == 1):
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
549 uncertain.update(otherbranch)
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
550 uncertain.update(obsparents)
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
551 bheadset.difference_update(samebranch)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
552 bheadset.add(newrev)
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
553
22357
9c3c3dc14a65 branchmap: pre-filter topological heads before ancestors based filtering
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22356
diff changeset
554 if uncertain:
46254
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
555 if topoheads is None:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
556 topoheads = set(cl.headrevs())
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
557 if bheadset - topoheads:
c4b792fa109e branchmap: avoid ancestor computations in absence of non-continous branches
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
558 floorrev = min(bheadset)
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
559 if floorrev <= max(uncertain):
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
560 ancestors = set(cl.ancestors(uncertain, floorrev))
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
561 bheadset -= ancestors
48718
8b393f40a5e6 branchmap: don't add branch entries if there are no heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48687
diff changeset
562 if bheadset:
8b393f40a5e6 branchmap: don't add branch entries if there are no heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48687
diff changeset
563 self[branch] = [cl.node(rev) for rev in sorted(bheadset)]
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
564 tiprev = max(newheadrevs)
42214
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
565 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
566 ntiprev = tiprev
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
567
9893d7aa7420 branchcache: store the maximum tip in a variable inside for loop
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42190
diff changeset
568 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
569 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
570 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
571
19838
23386881abeb branchmap: remove the droppednodes logic
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 19837
diff changeset
572 if not self.validfor(repo):
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
573 # old cache key is now invalid for the repo, but we've just updated
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
574 # the cache and we assume it's valid, so let's make the cache key
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
575 # valid as well by recomputing it from the cached data
47012
d55b71393907 node: replace nullid and friends with nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 46819
diff changeset
576 self.tipnode = repo.nullid
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
577 self.tiprev = nullrev
42002
662ffdde5adf branchcache: rename itervalues() to iterheads()
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42001
diff changeset
578 for heads in self.iterheads():
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
579 if not heads:
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
580 # all revisions on a branch are obsolete
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
581 continue
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
582 # note: tiprev is not necessarily the tip revision of repo,
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
583 # because the tip could be obsolete (i.e. not a head)
18131
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
584 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
585 if tiprev > self.tiprev:
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
586 self.tipnode = cl.node(tiprev)
f0eeb9b3444a branchmap: make update a method
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18130
diff changeset
587 self.tiprev = tiprev
48687
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
588 self.filteredhash = scmutil.filteredhash(
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
589 repo, self.tiprev, needobsolete=True
f8f2ecdde4b5 branchmap: skip obsolete revisions while computing heads
Anton Shestakov <av6@dwimlabs.net>
parents: 48677
diff changeset
590 )
21031
05cfcecb3aef branchmap: log events related to branch cache
Gregory Szorc <gregory.szorc@gmail.com>
parents: 20264
diff changeset
591
30975
22fbca1d11ed mercurial: switch to util.timer for all interval timings
Simon Farnsworth <simonfar@fb.com>
parents: 29746
diff changeset
592 duration = util.timer() - starttime
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
593 repo.ui.log(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
594 b'branchcache',
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
595 b'updated %s in %.4f seconds\n',
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
596 _branchcachedesc(repo),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
597 duration,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
598 )
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
599
41566
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
600 self.write(repo)
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
601
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
602
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
603 class remotebranchcache(branchcache):
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
604 """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
605
41566
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
606 def write(self, repo):
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
607 pass
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
608
eb7ce452e0fb branchmap: updating triggers a write
Martijn Pieters <mj@octobus.net>
parents: 41565
diff changeset
609
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
610 # Revision branch info cache
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
611
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
612 _rbcversion = b'-v1'
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
613 _rbcnames = b'rbc-names' + _rbcversion
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
614 _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
615 # [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
616 _rbcrecfmt = b'>4sI'
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
617 _rbcrecsize = calcsize(_rbcrecfmt)
46360
1726a53a8494 reverse-branch-cache: switch to doubling allocating scheme
Joerg Sonnenberger <joerg@bec.de>
parents: 46254
diff changeset
618 _rbcmininc = 64 * _rbcrecsize
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
619 _rbcnodelen = 4
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
620 _rbcbranchidxmask = 0x7FFFFFFF
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
621 _rbccloseflag = 0x80000000
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
622
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
623
51375
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
624 class rbcrevs:
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
625 """a byte string consisting of an immutable prefix followed by a mutable suffix"""
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
626
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
627 def __init__(self, revs):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
628 self._prefix = revs
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
629 self._rest = bytearray()
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
630
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
631 def __len__(self):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
632 return len(self._prefix) + len(self._rest)
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
633
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
634 def unpack_record(self, rbcrevidx):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
635 if rbcrevidx < len(self._prefix):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
636 return unpack_from(_rbcrecfmt, util.buffer(self._prefix), rbcrevidx)
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
637 else:
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
638 return unpack_from(
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
639 _rbcrecfmt,
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
640 util.buffer(self._rest),
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
641 rbcrevidx - len(self._prefix),
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
642 )
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
643
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
644 def make_mutable(self):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
645 if len(self._prefix) > 0:
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
646 entirety = bytearray()
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
647 entirety[:] = self._prefix
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
648 entirety.extend(self._rest)
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
649 self._rest = entirety
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
650 self._prefix = bytearray()
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
651
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
652 def truncate(self, pos):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
653 self.make_mutable()
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
654 del self._rest[pos:]
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
655
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
656 def pack_into(self, rbcrevidx, node, branchidx):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
657 if rbcrevidx < len(self._prefix):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
658 self.make_mutable()
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
659 buf = self._rest
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
660 start_offset = rbcrevidx - len(self._prefix)
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
661 end_offset = start_offset + _rbcrecsize
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
662
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
663 if len(self._rest) < end_offset:
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
664 # bytearray doesn't allocate extra space at least in Python 3.7.
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
665 # When multiple changesets are added in a row, precise resize would
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
666 # result in quadratic complexity. Overallocate to compensate by
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
667 # using the classic doubling technique for dynamic arrays instead.
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
668 # If there was a gap in the map before, less space will be reserved.
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
669 self._rest.extend(b'\0' * end_offset)
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
670 return pack_into(
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
671 _rbcrecfmt,
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
672 buf,
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
673 start_offset,
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
674 node,
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
675 branchidx,
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
676 )
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
677
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
678 def extend(self, extension):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
679 return self._rest.extend(extension)
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
680
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
681 def slice(self, begin, end):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
682 if begin < len(self._prefix):
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
683 acc = bytearray()
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
684 acc[:] = self._prefix[begin:end]
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
685 acc.extend(
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
686 self._rest[begin - len(self._prefix) : end - len(self._prefix)]
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
687 )
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
688 return acc
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
689 return self._rest[begin - len(self._prefix) : end - len(self._prefix)]
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
690
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
691
48946
642e31cb55f0 py3: use class X: instead of class X(object):
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48935
diff changeset
692 class revbranchcache:
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
693 """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
694 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
695
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
696 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
697 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
698 thus have a unique index.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
699
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
700 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
701 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
702 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
703 modification is detected.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
704 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
705 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
706 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
707 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
708 node hashes.
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
709 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
710 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
711 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
712 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
713 """
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
714
24159
5b4ed033390b revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Mads Kiilerich <madski@unity3d.com>
parents: 23877
diff changeset
715 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
716 assert repo.filtername is None
24374
77fd1fb538cd revbranchcache: store repo on the object
Durham Goode <durham@fb.com>
parents: 24373
diff changeset
717 self._repo = repo
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
718 self._names = [] # branch names in local encoding with static index
51375
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
719 self._rbcrevs = rbcrevs(bytearray())
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
720 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
721 try:
33535
755e6532e81d cachevfs: migration the revbranchcache to 'cachevfs'
Boris Feld <boris.feld@octobus.net>
parents: 33534
diff changeset
722 bndata = repo.cachevfs.read(_rbcnames)
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
723 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
724 if bndata:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
725 self._names = [
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
726 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
727 ]
29423
d2c6f3a948fa branchmap: remove unused exception variable
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28558
diff changeset
728 except (IOError, OSError):
24159
5b4ed033390b revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Mads Kiilerich <madski@unity3d.com>
parents: 23877
diff changeset
729 if readonly:
5b4ed033390b revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Mads Kiilerich <madski@unity3d.com>
parents: 23877
diff changeset
730 # 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
731 self.branchinfo = self._branchinfo
5b4ed033390b revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Mads Kiilerich <madski@unity3d.com>
parents: 23877
diff changeset
732
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
733 if self._names:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
734 try:
51447
40943970b7ae config: move the option to mmap rev branch cache in the storage section
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51375
diff changeset
735 if repo.ui.configbool(b'storage', b'revbranchcache.mmap'):
51375
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
736 with repo.cachevfs(_rbcrevs) as fp:
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
737 data = util.buffer(util.mmapread(fp))
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
738 else:
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
739 data = repo.cachevfs.read(_rbcrevs)
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
740 self._rbcrevs = rbcrevs(data)
25660
328739ea70c3 global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents: 25266
diff changeset
741 except (IOError, OSError) as inst:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
742 repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
743 b"couldn't read revision branch cache: %s\n"
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
744 % stringutil.forcebytestr(inst)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
745 )
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
746 # remember number of good records on disk
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
747 self._rbcrevslen = min(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
748 len(self._rbcrevs) // _rbcrecsize, len(repo.changelog)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
749 )
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
750 if self._rbcrevslen == 0:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
751 self._names = []
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
752 self._rbcnamescount = len(self._names) # number of names read at
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
753 # _rbcsnameslen
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
754
28558
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
755 def _clear(self):
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
756 self._rbcsnameslen = 0
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
757 del self._names[:]
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
758 self._rbcnamescount = 0
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
759 self._rbcrevslen = len(self._repo.changelog)
51375
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
760 self._rbcrevs = rbcrevs(bytearray(self._rbcrevslen * _rbcrecsize))
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
761 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
762
50a64c321c1e branchmap: build the revbranchcache._namesreverse() only when required
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 40425
diff changeset
763 @util.propertycache
50a64c321c1e branchmap: build the revbranchcache._namesreverse() only when required
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 40425
diff changeset
764 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
765 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
766
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
767 def branchinfo(self, rev):
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
768 """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
769 persistent cache."""
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
770 changelog = self._repo.changelog
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
771 rbcrevidx = rev * _rbcrecsize
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
772
25266
38117278f295 revbranchcache: return uncached branchinfo for nullrev (issue4683)
Yuya Nishihara <yuya@tcha.org>
parents: 24728
diff changeset
773 # 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
774 if rev == nullrev:
38117278f295 revbranchcache: return uncached branchinfo for nullrev (issue4683)
Yuya Nishihara <yuya@tcha.org>
parents: 24728
diff changeset
775 return changelog.branchinfo(rev)
38117278f295 revbranchcache: return uncached branchinfo for nullrev (issue4683)
Yuya Nishihara <yuya@tcha.org>
parents: 24728
diff changeset
776
29604
db0095c83344 rbc: fix invalid rbc-revs entries caused by missing cache growth
Mads Kiilerich <madski@unity3d.com>
parents: 29423
diff changeset
777 # 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
778 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
779 return self._branchinfo(rev)
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
780
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
781 # 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
782 reponode = changelog.node(rev)[:_rbcnodelen]
51375
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
783 cachenode, branchidx = self._rbcrevs.unpack_record(rbcrevidx)
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
784 close = bool(branchidx & _rbccloseflag)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
785 if close:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
786 branchidx &= _rbcbranchidxmask
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
787 if cachenode == b'\0\0\0\0':
24376
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
788 pass
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
789 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
790 try:
28558
bcd106d456c4 cache: rebuild branch cache from scratch when inconsistencies are detected
Mads Kiilerich <madski@unity3d.com>
parents: 28557
diff changeset
791 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
792 except IndexError:
a2a380e2750f rbc: fix superfluous rebuilding from scratch - don't abuse self._rbcnamescount
Mads Kiilerich <madski@unity3d.com>
parents: 29604
diff changeset
793 # recover from invalid reference to unknown branch
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
794 self._repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
795 b"referenced branch names not found"
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
796 b" - rebuilding revision branch cache from scratch\n"
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
797 )
29615
a2a380e2750f rbc: fix superfluous rebuilding from scratch - don't abuse self._rbcnamescount
Mads Kiilerich <madski@unity3d.com>
parents: 29604
diff changeset
798 self._clear()
24376
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
799 else:
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
800 # 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
801 self._repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
802 b"history modification detected - truncating "
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
803 b"revision branch cache to revision %d\n" % rev
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
804 )
24376
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
805 truncate = rbcrevidx + _rbcrecsize
51375
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
806 self._rbcrevs.truncate(truncate)
24376
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
807 self._rbcrevslen = min(self._rbcrevslen, truncate)
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
808
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
809 # 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
810 return self._branchinfo(rev)
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
811
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
812 def _branchinfo(self, rev):
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
813 """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
814 changelog = self._repo.changelog
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
815 b, close = changelog.branchinfo(rev)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
816 if b in self._namesreverse:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
817 branchidx = self._namesreverse[b]
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
818 else:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
819 branchidx = len(self._names)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
820 self._names.append(b)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
821 self._namesreverse[b] = branchidx
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
822 reponode = changelog.node(rev)
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
823 if close:
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
824 branchidx |= _rbccloseflag
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
825 self._setcachedata(rev, reponode, branchidx)
24375
fe255b2525d5 revbranchcache: move entry writing to a separate function
Durham Goode <durham@fb.com>
parents: 24374
diff changeset
826 return b, close
fe255b2525d5 revbranchcache: move entry writing to a separate function
Durham Goode <durham@fb.com>
parents: 24374
diff changeset
827
46372
3e91d9978bec branchmap: update rev-branch-cache incrementally
Joerg Sonnenberger <joerg@bec.de>
parents: 46360
diff changeset
828 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
829 """add new data information to the cache"""
46372
3e91d9978bec branchmap: update rev-branch-cache incrementally
Joerg Sonnenberger <joerg@bec.de>
parents: 46360
diff changeset
830 branch, close = changelogrevision.branchinfo
3e91d9978bec branchmap: update rev-branch-cache incrementally
Joerg Sonnenberger <joerg@bec.de>
parents: 46360
diff changeset
831
36962
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
832 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
833 branchidx = self._namesreverse[branch]
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
834 else:
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
835 branchidx = len(self._names)
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
836 self._names.append(branch)
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
837 self._namesreverse[branch] = branchidx
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
838 if close:
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
839 branchidx |= _rbccloseflag
46372
3e91d9978bec branchmap: update rev-branch-cache incrementally
Joerg Sonnenberger <joerg@bec.de>
parents: 46360
diff changeset
840 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
841 # 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
842 # 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
843 #
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
844 # self.branchinfo = self._branchinfo
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
845 #
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
846 # 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
847 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
848 del self.branchinfo
95f4f1bfb650 revbranchcache: add a public function to update the data
Boris Feld <boris.feld@octobus.net>
parents: 36474
diff changeset
849
40425
5e5c8f2a1eb5 branchmap: do not specify changelog as an argument
Yuya Nishihara <yuya@tcha.org>
parents: 40375
diff changeset
850 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
851 """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
852 if rev == nullrev:
a5bad127128d branchmap: handle nullrev in setcachedata
Durham Goode <durham@fb.com>
parents: 31381
diff changeset
853 return
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
854 rbcrevidx = rev * _rbcrecsize
51375
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
855 self._rbcrevs.pack_into(rbcrevidx, node, branchidx)
24376
203a078da052 revbranchcache: populate cache incrementally
Durham Goode <durham@fb.com>
parents: 24375
diff changeset
856 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
857
24377
656f93ce66d5 revbranchcache: move cache writing to the transaction finalizer
Durham Goode <durham@fb.com>
parents: 24376
diff changeset
858 tr = self._repo.currenttransaction()
656f93ce66d5 revbranchcache: move cache writing to the transaction finalizer
Durham Goode <durham@fb.com>
parents: 24376
diff changeset
859 if tr:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
860 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
861
656f93ce66d5 revbranchcache: move cache writing to the transaction finalizer
Durham Goode <durham@fb.com>
parents: 24376
diff changeset
862 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
863 """Save branch cache if it is dirty."""
24374
77fd1fb538cd revbranchcache: store repo on the object
Durham Goode <durham@fb.com>
parents: 24373
diff changeset
864 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
865 wlock = None
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
866 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
867 try:
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
868 # 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
869 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
870 wlock = repo.wlock(wait=False)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
871 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
872 self._writenames(repo)
23785
cb99bacb9b4e branchcache: introduce revbranchcache for caching of revision branch names
Mads Kiilerich <madski@unity3d.com>
parents: 22357
diff changeset
873
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
874 # 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
875 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
876 if start != len(self._rbcrevs):
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
877 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
878 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
879 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
880 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
881
29745
3b184adfb5be branchmap: simplify error handlind when writing rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29744
diff changeset
882 except (IOError, OSError, error.Abort, error.LockError) as inst:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
883 repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
884 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
885 % (step, stringutil.forcebytestr(inst))
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
886 )
29744
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
887 finally:
0d588332ad2c branchmap: acquires lock before writting the rev branch cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 29743
diff changeset
888 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
889 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
890
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
891 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
892 """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
893 if self._rbcnamescount != 0:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
894 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
895 if f.tell() == self._rbcsnameslen:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
896 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
897 else:
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
898 f.close()
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
899 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
900 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
901 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
902 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
903 # 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
904 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
905 f = repo.cachevfs.open(_rbcnames, b'wb')
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
906 f.write(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
907 b'\0'.join(
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
908 encoding.fromlocal(b)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
909 for b in self._names[self._rbcnamescount :]
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
910 )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42603
diff changeset
911 )
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
912 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
913 f.close()
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
914 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
915
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
916 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
917 """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
918 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
919 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
920 if f.tell() != start:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
921 repo.ui.debug(
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
922 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
923 )
42184
09fd338522fa revbranchcache: factor logic to write names and revs in separate functions
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42138
diff changeset
924 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
925 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
926 start = 0
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
927 f.seek(start)
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
928 f.truncate()
ececa45c80d8 revbranchcache: use context manager in _writerevs() to write to file
Pulkit Goyal <pulkit@yandex-team.ru>
parents: 42184
diff changeset
929 end = revs * _rbcrecsize
51375
02e7d79edf62 branchmap: use mmap for faster revbranchcache loading
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 51290
diff changeset
930 f.write(self._rbcrevs.slice(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
931 self._rbcrevslen = revs