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comparison mercurial/context.py @ 10262:eb243551cbd8 stable

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copies: speed up copy detection On some large repos, copy detection could spend > 10min using fctx.ancestor() to determine if file revisions were actually related. Because ancestor must traverse history to the root to determine the GCA, it was doing a lot more work than necessary. With this replacement, same status -r a:b takes ~3 seconds.
author Matt Mackall <mpm@selenic.com>
date Tue, 19 Jan 2010 22:20:05 -0600
parents d1043c2ffe6c
children 25e572394f5c
comparison
equal deleted inserted replaced
10261:5eae671c0b57 10262:eb243551cbd8
492 if v: 492 if v:
493 f, n = v 493 f, n = v
494 return filectx(self._repo, f, fileid=n, filelog=flcache[f]) 494 return filectx(self._repo, f, fileid=n, filelog=flcache[f])
495 495
496 return None 496 return None
497
498 def ancestors(self):
499 seen = set(str(self))
500 visit = [self]
501 while visit:
502 for parent in visit.pop(0).parents():
503 s = str(parent)
504 if s not in seen:
505 visit.append(parent)
506 seen.add(s)
507 yield parent
497 508
498 class workingctx(changectx): 509 class workingctx(changectx):
499 """A workingctx object makes access to data related to 510 """A workingctx object makes access to data related to
500 the current working directory convenient. 511 the current working directory convenient.
501 parents - a pair of parent nodeids, or None to use the dirstate. 512 parents - a pair of parent nodeids, or None to use the dirstate.