Mercurial > public > mercurial-scm > hg-stable
comparison mercurial/revlog.py @ 14523:b4175b72bbd8
revlog: bail out earlier in group when we have no chunks
| author | Sune Foldager <cryo@cyanite.org> |
|---|---|
| date | Fri, 03 Jun 2011 20:32:54 +0200 |
| parents | 1ffeeb91c55d |
| children | 48ec0763afbb |
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| 14522:5ca61ef6ff00 | 14523:b4175b72bbd8 |
|---|---|
| 1094 guaranteed to have this parent as it has all history before | 1094 guaranteed to have this parent as it has all history before |
| 1095 these changesets. In the case firstparent is nullrev the | 1095 these changesets. In the case firstparent is nullrev the |
| 1096 changegroup starts with a full revision. | 1096 changegroup starts with a full revision. |
| 1097 """ | 1097 """ |
| 1098 | 1098 |
| 1099 # if we don't have any revisions touched by these changesets, bail | |
| 1100 if len(nodelist) == 0: | |
| 1101 yield bundler.close() | |
| 1102 return | |
| 1103 | |
| 1099 # for generaldelta revlogs, we linearize the revs; this will both be | 1104 # for generaldelta revlogs, we linearize the revs; this will both be |
| 1100 # much quicker and generate a much smaller bundle | 1105 # much quicker and generate a much smaller bundle |
| 1101 if (self._generaldelta and reorder is not False) or reorder: | 1106 if (self._generaldelta and reorder is not False) or reorder: |
| 1102 dag = dagutil.revlogdag(self) | 1107 dag = dagutil.revlogdag(self) |
| 1103 revs = set(self.rev(n) for n in nodelist) | 1108 revs = set(self.rev(n) for n in nodelist) |
| 1104 revs = dag.linearize(revs) | 1109 revs = dag.linearize(revs) |
| 1105 else: | 1110 else: |
| 1106 revs = sorted([self.rev(n) for n in nodelist]) | 1111 revs = sorted([self.rev(n) for n in nodelist]) |
| 1107 | |
| 1108 # if we don't have any revisions touched by these changesets, bail | |
| 1109 if not revs: | |
| 1110 yield bundler.close() | |
| 1111 return | |
| 1112 | 1112 |
| 1113 # add the parent of the first rev | 1113 # add the parent of the first rev |
| 1114 p = self.parentrevs(revs[0])[0] | 1114 p = self.parentrevs(revs[0])[0] |
| 1115 revs.insert(0, p) | 1115 revs.insert(0, p) |
| 1116 | 1116 |