Mercurial > public > mercurial-scm > hg-stable
comparison mercurial/commands.py @ 879:953ccddd57bd
dirstate walking optimizations
The repo walking code introduces a number of calls to dirstate.map.copy(),
significantly slowing down the walk on large trees. When a list of
files is passed to the walking code, we should only look at map entries
relevant to the file list passed in.
dirstate.filterfiles() is added to return a subset of the dirstate map.
The subset includes in files passed in, and if one of the files requested
is actually a directory, it includes any files inside that directory tree.
This brings the time for hg diff Makefile down from 1.7s to .3s on
a linux kernel repo.
Also, the diff command was unconditionally calling makewalk, leading
to an extra pass through repo.changes. This patch avoids the call
to makewalk when commands.diff isn't given a list of patterns, cutting
the time for hg diff (with no args) in half.
Index: mine/mercurial/hg.py
===================================================================
| author | mason@suse.com |
|---|---|
| date | Fri, 12 Aug 2005 07:10:21 -0800 |
| parents | c2e77581bc84 |
| children | 409a9a7b0da2 |
comparison
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| 871:c2e77581bc84 | 879:953ccddd57bd |
|---|---|
| 630 | 630 |
| 631 if len(revs) > 2: | 631 if len(revs) > 2: |
| 632 raise util.Abort("too many revisions to diff") | 632 raise util.Abort("too many revisions to diff") |
| 633 | 633 |
| 634 files = [] | 634 files = [] |
| 635 roots, match, results = makewalk(repo, pats, opts) | 635 match = util.always |
| 636 for src, abs, rel in results: | 636 if pats: |
| 637 files.append(abs) | 637 roots, match, results = makewalk(repo, pats, opts) |
| 638 for src, abs, rel in results: | |
| 639 files.append(abs) | |
| 638 dodiff(sys.stdout, ui, repo, files, *revs, **{'match': match}) | 640 dodiff(sys.stdout, ui, repo, files, *revs, **{'match': match}) |
| 639 | 641 |
| 640 def doexport(ui, repo, changeset, seqno, total, revwidth, opts): | 642 def doexport(ui, repo, changeset, seqno, total, revwidth, opts): |
| 641 node = repo.lookup(changeset) | 643 node = repo.lookup(changeset) |
| 642 prev, other = repo.changelog.parents(node) | 644 prev, other = repo.changelog.parents(node) |