Mercurial > hg
view mercurial/txnutil.py @ 37837:e0f30c91dfd8
log: cache diffopts instance
It appears that calling patch.diff*opts() repeatedly has some cost.
$ hg log -T '{rev}\n' -R mercurial --time > /dev/null
(orig) time: real 4.430 secs (user 4.370+0.000 sys 0.050+0.000)
(new) time: real 1.950 secs (user 1.880+0.000 sys 0.060+0.000)
'diffopts or {}' isn't necessary as patch.diff*opts() accepts opts=None.
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Sun, 29 Apr 2018 15:44:17 +0900 |
parents | 206532700213 |
children | 2372284d9457 |
line wrap: on
line source
# txnutil.py - transaction related utilities # # Copyright FUJIWARA Katsunori <foozy@lares.dti.ne.jp> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import import errno from . import ( encoding, ) def mayhavepending(root): '''return whether 'root' may have pending changes, which are visible to this process. ''' return root == encoding.environ.get('HG_PENDING') def trypending(root, vfs, filename, **kwargs): '''Open file to be read according to HG_PENDING environment variable This opens '.pending' of specified 'filename' only when HG_PENDING is equal to 'root'. This returns '(fp, is_pending_opened)' tuple. ''' if mayhavepending(root): try: return (vfs('%s.pending' % filename, **kwargs), True) except IOError as inst: if inst.errno != errno.ENOENT: raise return (vfs(filename, **kwargs), False)