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comparison mercurial/localrepo.py @ 9151:f528d1a93491

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tags: implement persistent tag caching (issue548). - rename findglobaltags() to findglobaltags1() (so the "no cache" implementation is still there if we need it) - add findglobaltags2() and make findglobaltags() an alias for it (disabling tag caching is a one-line patch) - factor out tagcache class with methods readcache() and writecache(); the expensive part of tag finding (iterate over heads and find .hgtags filenode) is now in tagcache.readcache()
author Greg Ward <greg-hg@gerg.ca>
date Thu, 16 Jul 2009 10:39:42 -0400
parents 09a1ee498756
children 4017291c4c48
comparison
equal deleted inserted replaced
9150:09a1ee498756 9151:f528d1a93491
913 913
914 def destroyed(self): 914 def destroyed(self):
915 '''Inform the repository that nodes have been destroyed. 915 '''Inform the repository that nodes have been destroyed.
916 Intended for use by strip and rollback, so there's a common 916 Intended for use by strip and rollback, so there's a common
917 place for anything that has to be done after destroying history.''' 917 place for anything that has to be done after destroying history.'''
918 # Do nothing for now: this is a placeholder that will be used
919 # when we add tag caching.
920 # XXX it might be nice if we could take the list of destroyed 918 # XXX it might be nice if we could take the list of destroyed
921 # nodes, but I don't see an easy way for rollback() to do that 919 # nodes, but I don't see an easy way for rollback() to do that
922 pass 920
921 # Ensure the persistent tag cache is updated. Doing it now
922 # means that the tag cache only has to worry about destroyed
923 # heads immediately after a strip/rollback. That in turn
924 # guarantees that "cachetip == currenttip" (comparing both rev
925 # and node) always means no nodes have been added or destroyed.
926
927 # XXX this is suboptimal when qrefresh'ing: we strip the current
928 # head, refresh the tag cache, then immediately add a new head.
929 # But I think doing it this way is necessary for the "instant
930 # tag cache retrieval" case to work.
931 tags_.findglobaltags(self.ui, self, {}, {})
923 932
924 def walk(self, match, node=None): 933 def walk(self, match, node=None):
925 ''' 934 '''
926 walk recursively through the directory tree or a given 935 walk recursively through the directory tree or a given
927 changeset, finding all files matched by the match 936 changeset, finding all files matched by the match