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localrepo: use lazy ancestor membership testing
authorSiddharth Agarwal <sid0@fb.com>
Mon, 17 Dec 2012 20:43:37 -0800
changeset 18092 ff36650e4238
parent 18091 f7f8159caad3
child 18093 9c76da468a19
localrepo: use lazy ancestor membership testing For a repository with over 400,000 commits, rebasing one revision near tip, this avoids two treks up the DAG, speeding the operation up by around 1.6 seconds.
mercurial/localrepo.py file | annotate | diff | comparison | revisions 
--- a/mercurial/localrepo.py	Tue Dec 18 12:47:20 2012 -0800
+++ b/mercurial/localrepo.py	Mon Dec 17 20:43:37 2012 -0800
@@ -2081,7 +2081,7 @@
             bases = [nullid]
         csets, bases, heads = cl.nodesbetween(bases, heads)
         # We assume that all ancestors of bases are known
-        common = set(cl.ancestors([cl.rev(n) for n in bases]))
+        common = cl.ancestors([cl.rev(n) for n in bases])
         return self._changegroupsubset(common, csets, heads, source)
 
     def getlocalbundle(self, source, outgoing):
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