Mercurial > public > mercurial-scm > hg-stable
diff mercurial/patch.py @ 9123:360f61c2919f
Make patch.diff filelog cache LRU of 20 files. Fixes issue1738.
20 files is as fast as 200 for hg diff -r 28015:30103 of mozilla-central.
Ideally we'd use util.lrucachefunc, but the interface doesn't quite work.
| author | Brendan Cully <brendan@kublai.com> |
|---|---|
| date | Tue, 14 Jul 2009 16:50:37 -0700 |
| parents | 5fe8dc75aa4a |
| children | 6d1f9238824e df21a009c9c4 |
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--- a/mercurial/patch.py Tue Jul 14 17:12:12 2009 -0300 +++ b/mercurial/patch.py Tue Jul 14 16:50:37 2009 -0700 @@ -1246,12 +1246,21 @@ if not node1: node1 = repo.dirstate.parents()[0] - flcache = {} - def getfilectx(f, ctx): - flctx = ctx.filectx(f, filelog=flcache.get(f)) - if f not in flcache: - flcache[f] = flctx._filelog - return flctx + def lrugetfilectx(): + cache = {} + order = [] + def getfilectx(f, ctx): + fctx = ctx.filectx(f, filelog=cache.get(f)) + if f not in cache: + if len(cache) > 20: + del cache[order.pop(0)] + cache[f] = fctx._filelog + else: + order.remove(f) + order.append(f) + return fctx + return getfilectx + getfilectx = lrugetfilectx() ctx1 = repo[node1] ctx2 = repo[node2]