Mercurial > hg
view mercurial/scmposix.py @ 18878:3cfaace0441e
copies._forwardcopies: use set operations to find missing files
This is a performance win for a number of reasons:
- We don't iterate over contexts, which avoids a completely unnecessary sorted
call + the O(number of files) abstraction cost of doing that.
- We don't check membership in a context, which avoids another
O(number of files) abstraction cost.
- We iterate over the manifests in C instead of Python.
For a large repo with 170,000 files, this improves perfpathcopies from 0.34
seconds to 0.07. Anything that uses pathcopies, such as rebase or diff --git
between two revisions, benefits.
author | Siddharth Agarwal <sid0@fb.com> |
---|---|
date | Thu, 04 Apr 2013 20:22:29 -0700 |
parents | 4c6f7f0dadab |
children | 23c995ed466b |
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import sys, os import osutil def _rcfiles(path): rcs = [os.path.join(path, 'hgrc')] rcdir = os.path.join(path, 'hgrc.d') try: rcs.extend([os.path.join(rcdir, f) for f, kind in osutil.listdir(rcdir) if f.endswith(".rc")]) except OSError: pass return rcs def systemrcpath(): path = [] if sys.platform == 'plan9': root = 'lib/mercurial' else: root = 'etc/mercurial' # old mod_python does not set sys.argv if len(getattr(sys, 'argv', [])) > 0: p = os.path.dirname(os.path.dirname(sys.argv[0])) path.extend(_rcfiles(os.path.join(p, root))) path.extend(_rcfiles('/' + root)) return path def userrcpath(): if sys.platform == 'plan9': return [os.environ['home'] + '/lib/hgrc'] else: return [os.path.expanduser('~/.hgrc')]