Mercurial > public > mercurial-scm > hg-stable
diff mercurial/localrepo.py @ 3577:7f7425306925
Correct optimization from 3464f5e77f34; add a test.
If there are two (or more) heads that point to the same .hgtags
node, we can safely skip parsing the file in all but the last head.
(In 3464f5e77f34, we were parsing the file in the first head and
skipping all the others.)
| author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
|---|---|
| date | Sat, 28 Oct 2006 23:37:59 -0300 |
| parents | 23f7d9621783 |
| children | 3b4e00cba57a |
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--- a/mercurial/localrepo.py Sat Oct 28 20:21:59 2006 -0300 +++ b/mercurial/localrepo.py Sat Oct 28 23:37:59 2006 -0300 @@ -244,13 +244,10 @@ # read the tags file from each head, ending with the tip, # and add each tag found to the map, with "newer" ones # taking precedence - heads = self.heads() - heads.reverse() - seen = {} - for node in heads: - f = self.filectx('.hgtags', node) - if not f or f.filerev() in seen: continue - seen[f.filerev()] = 1 + f = None + for rev, node, fnode in self._hgtagsnodes(): + f = (f and f.filectx(fnode) or + self.filectx('.hgtags', fileid=fnode)) count = 0 for l in f.data().splitlines(): count += 1 @@ -269,6 +266,24 @@ return self.tagscache + def _hgtagsnodes(self): + heads = self.heads() + heads.reverse() + last = {} + ret = [] + for node in heads: + c = self.changectx(node) + rev = c.rev() + try: + fnode = c.filenode('.hgtags') + except repo.LookupError: + continue + ret.append((rev, node, fnode)) + if fnode in last: + ret[last[fnode]] = None + last[fnode] = len(ret) - 1 + return [item for item in ret if item] + def tagslist(self): '''return a list of tags ordered by revision''' l = []